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A1 noun #22 最常用 17分钟阅读

oxygen

前22

At the A1 level, oxygen is a very basic and important word. You should know that oxygen is something we need to live. We cannot see it, smell it, or taste it, but it is all around us in the air. When we breathe in, our bodies take the oxygen from the air. This gives us energy. You can think of oxygen like food for your blood. Plants are also very important at this level because they make oxygen. When the sun shines on trees and flowers, they give out oxygen for us to breathe. You might hear this word in a science class or when talking about your body. For example, 'I breathe oxygen.' It is a simple noun, and you don't need to worry about complex chemistry yet. Just remember: oxygen equals life. If you go to a doctor, they might check if you are getting enough oxygen. In simple stories, oxygen is what keeps the characters alive in space or under the water. It is one of the first 'invisible' things you learn about in English. You should also know that fire needs oxygen to burn. If you cover a candle with a glass, the fire goes out because there is no more oxygen. This is a simple way to see how oxygen works. At A1, focus on the connection between breathing, plants, and survival. You don't need to use 'an' with oxygen; just say 'oxygen.' For example, 'Plants produce oxygen' is a perfect A1 sentence. It is a vital word for talking about nature and health in a very simple way.

At the A2 level, you can start to use oxygen in more descriptive sentences. You know it's a gas in the air, but now you can talk about where it comes from and how we use it. For example, you can explain that 'Forests are important because they produce a lot of oxygen.' You might also learn about 'oxygen tanks' used by divers or people in hospitals. This level involves understanding that oxygen is a specific part of the air, not just the air itself. You can use it with verbs like 'need,' 'produce,' 'breathe,' and 'provide.' For instance, 'Divers carry oxygen tanks to breathe underwater.' You are also beginning to understand that oxygen is necessary for more than just humans; animals and even some tiny organisms need it too. In your A2 studies, you might encounter oxygen in topics about the environment or healthy living. You can say things like, 'Fresh air has more oxygen than a crowded room.' This shows you understand that the amount of oxygen can change. You might also learn the word 'oxygen' in the context of fire safety, such as 'Fire needs oxygen, heat, and fuel.' This helps you use the word in practical, real-world situations. At A2, you should be comfortable using 'oxygen' as an uncountable noun in various contexts without confusing it with 'air' too much. You are building a foundation for more scientific discussions later on.

At the B1 level, your understanding of oxygen becomes more functional and detailed. You can discuss its role in health and fitness with more precision. For example, you might talk about 'oxygen levels' in the blood or how exercise increases your 'oxygen intake.' You understand that during physical activity, your heart beats faster to pump more oxygen to your muscles. This level also introduces the idea of oxygen in different environments. You can describe how 'the air at the top of a mountain has less oxygen,' which makes it harder to breathe. This is a great way to use the word in travel or adventure contexts. You might also start to see oxygen in news reports about the environment, such as 'pollution is reducing oxygen levels in the ocean.' At B1, you can use more complex sentence structures, like 'Oxygen is essential for the survival of most living things on Earth.' You are also able to understand simple metaphors, such as 'The new funding provided the oxygen the project needed to survive.' This shows a deeper grasp of how the word can be used beyond just science. You should also be aware of the chemical symbol 'O2' and why it's used. In writing, you can now use adjectives to describe oxygen, such as 'pure oxygen' or 'atmospheric oxygen.' This level is about moving from basic survival talk to more nuanced discussions about health, science, and the world around you.

At the B2 level, you should be able to use 'oxygen' in technical, environmental, and metaphorical discussions with confidence. You understand the chemical process of oxidation—how oxygen reacts with other elements to cause rust or combustion. You can explain complex ideas like 'photosynthesis is the process by which plants convert sunlight and carbon dioxide into energy and oxygen.' In environmental debates, you can discuss 'oxygen depletion' in ecosystems and its impact on biodiversity. Your vocabulary is rich enough to use related terms like 'oxygenate' or 'deoxygenated.' For example, 'The blood is oxygenated in the lungs before being pumped to the rest of the body.' You can also handle more sophisticated metaphors. You might read or write about how 'the oxygen of publicity' can sustain a political movement or how a dominant company 'sucks the oxygen out of the market' for smaller competitors. At B2, you are expected to use the word accurately in academic or professional contexts. You might discuss the importance of 'oxygen sensors' in cars or 'oxygen therapy' in a medical essay. You understand that oxygen is a highly reactive gas and can explain why this is both beneficial (for life and fire) and potentially dangerous (like in explosions). Your ability to switch between literal scientific usage and figurative social usage is a key marker of this level. You are now using 'oxygen' as a tool to explain how systems—both biological and social—function and survive.

At the C1 level, you have a sophisticated command of the word 'oxygen' and its many derivatives. You can participate in high-level scientific or philosophical discussions where oxygen is a central theme. You might explore the 'Great Oxidation Event' in Earth's history and its role in the evolution of complex life. Your writing can incorporate technical terms like 'oxygen saturation,' 'partial pressure of oxygen,' and 'reactive oxygen species' without hesitation. You understand the nuances of how oxygen interacts at a molecular level, such as its role as a terminal electron acceptor in the electron transport chain. Metaphorically, you can use 'oxygen' with great subtlety. You might analyze how a specific policy 'provides the necessary oxygen for economic growth' or how a lack of transparency 'deprives a democracy of its vital oxygen.' You are also aware of the historical context of the word—how it was discovered and named by scientists like Priestley and Lavoisier, and the misconceptions they had about it (like the phlogiston theory). At C1, you can use the word in a variety of registers, from a formal scientific report to a poetic description of the atmosphere. You are also sensitive to the collocations and idioms that involve oxygen, using them naturally to add depth to your communication. You can discuss the ethical implications of 'oxygen rationing' in medical crises or the geopolitical importance of 'oxygen production' in global climate agreements. Your use of the word is precise, versatile, and deeply integrated into your overall mastery of English.

At the C2 level, your mastery of 'oxygen' is complete, allowing you to use it with the precision of a native-speaking expert. You can navigate the most complex scientific literature, understanding the role of oxygen in quantum chemistry or advanced astrophysics (such as oxygen's role in stellar nucleosynthesis). Your metaphorical use of the word is masterful; you can weave it into complex narratives or arguments to represent the very essence of life, energy, or attention. You might write a critique of a piece of literature, noting how the author 'denies their characters the oxygen of hope,' or a political analysis of how 'the oxygen of dissent is being choked out by authoritarian measures.' You are fully aware of the etymological roots of the word—coming from the Greek 'oxys' (acid) and 'genes' (forming)—and can discuss why this name was actually based on a scientific error. At this level, you can use 'oxygen' in highly specialized fields, such as hyperbaric medicine or aerospace engineering, with total accuracy. You can also appreciate and use the word in its most abstract forms, discussing 'oxygen' as a symbol of freedom or vitality in poetry and philosophy. Your ability to use the word is so natural that you can play with its meaning, create puns, or use it in irony. You understand the deepest layers of its cultural and scientific significance, making it a powerful tool in your extensive linguistic repertoire. Whether you are discussing the 'oxygen-18' isotope in paleoclimatology or the 'oxygen of innovation' in a corporate strategy, your usage is flawless and profoundly expressive.

开始练习例句笔记与提示

oxygen 30秒了解

Oxygen is a colorless, odorless gas that makes up 21% of Earth's atmosphere and is essential for all human and animal life.
It is a chemical element (O) that is highly reactive, supporting combustion and serving as the primary fuel for cellular energy production.
Commonly used in medical treatments, industrial welding, and aerospace, oxygen is also used metaphorically to describe essential attention or resources.
Plants are the primary source of atmospheric oxygen, creating it through photosynthesis, making them vital for the planet's ecological health.

Oxygen is the most vital element for human existence on Earth. In its most common form, it is a colorless, odorless, and tasteless gas that makes up approximately twenty-one percent of the atmosphere we breathe. Without oxygen, the chemical reactions that produce energy within our cells would cease, leading to immediate biological failure. People use the word oxygen in a variety of contexts, ranging from basic survival and biology to complex industrial applications and even metaphorical descriptions of social dynamics. In everyday conversation, we often refer to oxygen when discussing health, exercise, or the environment. For instance, when someone feels faint, we might say they need more oxygen. In a scientific setting, oxygen is the eighth element on the periodic table, symbolized by the letter O. It is highly reactive, meaning it easily combines with other elements to form compounds like water (H2O) and carbon dioxide (CO2). This reactivity is also what causes iron to rust and wood to burn. Understanding oxygen is fundamental to understanding how life functions and how the physical world interacts.

Biological Necessity: Oxygen is the primary fuel for cellular respiration, the process by which organisms convert nutrients into energy. Without a constant supply, brain cells begin to die within minutes.

The scuba diver checked his tank to ensure he had enough oxygen for the deep descent.

Beyond biology, oxygen is a cornerstone of modern industry. It is used in steelmaking to burn off impurities, in welding to create high-temperature flames, and in rocket propulsion as an oxidizer. In medical fields, supplemental oxygen is a life-saving treatment for patients with respiratory illnesses like pneumonia or chronic obstructive pulmonary disease. The word also carries significant weight in environmental discussions. We talk about the oxygen levels in our oceans, which are vital for marine life, and the role of forests—often called the lungs of the planet—in producing the oxygen we breathe through photosynthesis. When you use the word oxygen, you are talking about the very essence of vitality and chemical transformation. It is a word that bridges the gap between the invisible air around us and the tangible energy that drives every heartbeat and every engine.

Atmospheric Composition: The Earth's atmosphere is a delicate balance of gases. Oxygen's 21% share is perfect for supporting life without making the atmosphere too flammable.

Plants are amazing because they take in carbon dioxide and release oxygen back into the air.

In a metaphorical sense, oxygen refers to the necessary conditions or attention required for something to exist or flourish. For example, politicians often talk about the 'oxygen of publicity,' suggesting that certain movements or ideas cannot survive without media attention. Similarly, in a crowded social situation, a dominant personality might be said to 'suck all the oxygen out of the room,' meaning they take up all the attention and leave no space for others to contribute. This versatility makes oxygen a powerful word in both literal and figurative English. Whether you are discussing the chemical properties of O2, the medical needs of a patient, or the metaphorical survival of an idea, the word oxygen always points toward the fundamental requirement for continued existence and activity.

Chemical Reactivity: Oxygen is an oxidizer, meaning it likes to steal electrons from other atoms. This is why it is so important for fire and for the energy-making processes in our bodies.

The fire died down quickly because it was deprived of oxygen by the heavy blanket.

At high altitudes, the air is thinner, and there is less oxygen available for hikers to breathe.

Liquid oxygen is used as a fuel component in many modern space rockets.

Using the word oxygen correctly involves understanding its grammatical role as an uncountable noun. Because it is a substance, we do not usually say 'an oxygen' or 'oxygens.' Instead, we refer to 'oxygen' in general, or 'a supply of oxygen,' 'a tank of oxygen,' or 'levels of oxygen.' When constructing sentences, oxygen often acts as the object of verbs related to breathing, supplying, or consuming. For example, 'We breathe oxygen,' or 'The machine provides oxygen.' It can also serve as the subject of a sentence, particularly in scientific or descriptive contexts: 'Oxygen is essential for life.' Because it is a specific chemical element, it is rarely capitalized unless it starts a sentence or is part of a specific title. Understanding these nuances helps in creating natural-sounding English sentences that accurately convey the importance of this gas.

Common Verb Pairings: Oxygen is frequently paired with verbs like 'absorb,' 'release,' 'deplete,' 'circulate,' and 'require.' These verbs describe how oxygen moves through systems or organisms.

Our lungs are designed to extract oxygen from the air and transfer it into our bloodstream.

In more advanced usage, oxygen is often modified by adjectives that describe its state or concentration. You might hear about 'pure oxygen,' 'atmospheric oxygen,' 'dissolved oxygen' (in water), or 'supplemental oxygen.' These modifiers provide crucial context. For instance, breathing pure oxygen for too long can actually be harmful, whereas atmospheric oxygen is what we are naturally adapted to. In medical settings, the phrase 'on oxygen' is a common shorthand for a patient who is receiving breathing assistance through a mask or nasal cannula. For example, 'The patient was put on oxygen after the surgery.' This usage is idiomatic and very common in healthcare environments. Furthermore, when discussing the environment, we often talk about 'oxygen depletion' in lakes or 'oxygen-rich' environments like rainforests. These terms help scientists and enthusiasts describe the health of an ecosystem.

Prepositional Usage: We often use 'with' or 'without' oxygen. For example, 'Aerobic exercise is performed with oxygen,' while 'Anaerobic exercise occurs without sufficient oxygen.'

The athlete struggled to get enough oxygen during the final sprint of the marathon.

Metaphorically, the word is used to describe things that are essential for a process to continue. You might say, 'Investment is the oxygen of a new business,' or 'Truth is the oxygen of democracy.' In these cases, oxygen is treated as a synonym for 'lifeblood' or 'essential fuel.' This usage is common in journalism and persuasive writing. When using oxygen in this way, it is important to ensure the metaphor is clear. The idea is that without the 'oxygen' (investment, truth, etc.), the subject (business, democracy) will 'suffocate' or die out. This adds a dramatic and vital quality to your descriptions. Whether literal or figurative, oxygen always functions as a singular, uncountable entity that represents the most basic requirement for survival and function.

Descriptive Adjectives: Common adjectives include: vital, essential, scarce, abundant, medical-grade, and liquid. These help specify the type and importance of the oxygen being discussed.

Scientists are looking for signs of oxygen on other planets to see if they could support life.

The hospital installed a new system to deliver oxygen directly to every patient room.

During the experiment, the chemist carefully measured the amount of oxygen consumed by the reaction.

You will encounter the word oxygen in a wide array of real-world environments, each emphasizing a different aspect of its utility. One of the most common places is in a hospital or medical clinic. Here, oxygen is a standard medical treatment. You might hear a nurse say, 'We need to check her oxygen sats,' referring to oxygen saturation, or a doctor might order 'two liters of oxygen' for a patient. In these settings, oxygen is treated as a drug—something that must be carefully dosed and monitored. It is also a common topic in health and fitness circles. Personal trainers often talk about 'oxygen intake' or 'VO2 max,' which is a measure of the maximum amount of oxygen an individual can use during intense exercise. If you go to a gym or join a running club, you will hear people discussing how to improve their body's ability to process oxygen to boost performance.

Medical Settings: In hospitals, oxygen is often delivered via green-colored tanks or wall outlets. The color green is the international standard for oxygen equipment.

The flight attendant demonstrated how to use the oxygen masks in case of an emergency cabin depressurization.

Another frequent location for this word is in the aviation and aerospace industry. Before every commercial flight, passengers are briefed on the use of oxygen masks that drop from the ceiling if the cabin loses pressure. Pilots and astronauts are constantly monitoring oxygen levels because their lives depend on it in the thin atmosphere of high altitudes or the vacuum of space. You might hear news reports about 'oxygen leaks' on the International Space Station or the development of 'oxygen generators' for future Mars missions. In these contexts, oxygen is the ultimate limiting factor for exploration. Furthermore, environmental news and documentaries frequently use the word. You will hear about 'dead zones' in the ocean where oxygen levels have dropped so low that fish cannot survive, or the 'oxygen production' of the Amazon rainforest. These discussions highlight oxygen as a key indicator of planetary health.

Industrial Applications: In manufacturing, oxygen is used in 'oxy-fuel' cutting and welding, where it is mixed with a fuel gas to create an extremely hot flame.

The environmentalist explained that the algae bloom was depleting the oxygen in the lake, killing the fish.

In the world of sports and adventure, oxygen is a major topic for mountain climbers. When climbing peaks like Mount Everest, climbers enter the 'death zone' above 8,000 meters, where there is not enough oxygen to sustain human life for long. You will hear climbers talk about 'bottled oxygen' or 'climbing without O2.' This adds a layer of extreme challenge and danger to the word. Finally, in political and social commentary, you might hear the word used metaphorically. A commentator might say, 'The scandal took all the oxygen out of the election campaign,' meaning it dominated the news so much that no other issues could be discussed. This broad range of usage—from the literal air we breathe to the metaphorical attention we give—makes oxygen one of the most versatile and essential words in the English language.

Metaphorical Use: The phrase 'oxygen of publicity' was famously used by Margaret Thatcher to describe how media coverage can sustain terrorist groups.

The coach told the players that they needed to improve their oxygen efficiency through better cardio training.

Firefighters use self-contained breathing apparatus to provide a steady flow of oxygen in smoky buildings.

The scientist noted that the early Earth's atmosphere had very little oxygen until cyanobacteria appeared.

One of the most frequent mistakes learners make is confusing 'oxygen' with 'air.' While they are related, they are not the same thing. Air is a mixture of many gases, including nitrogen, oxygen, argon, and carbon dioxide. Oxygen is just one component of air. If you say, 'I need some oxygen,' while standing outside, it sounds like you are having a medical emergency. Instead, you should say, 'I need some fresh air.' Use 'oxygen' specifically when referring to the chemical element or the gas used in medical or industrial contexts. Another common error is treating oxygen as a countable noun. You should never say 'an oxygen' or 'three oxygens.' Because it is a gas and a substance, it is uncountable. If you need to count it, you must use a 'counter' word like 'molecule,' 'atom,' 'tank,' or 'liter.' For example, 'two tanks of oxygen' is correct, but 'two oxygens' is not.

Oxygen vs. Air: Air is the mixture we breathe (78% nitrogen, 21% oxygen). Oxygen is the specific gas our bodies use. Don't use them interchangeably in scientific or medical contexts.

Incorrect: I need to buy an oxygen for my fish tank. Correct: I need to buy an oxygen pump for my fish tank.

Spelling and pronunciation can also be tricky. Some learners forget the 'y' or the 'g' in oxygen, or they mispronounce the 'x' sound. The 'x' is pronounced like 'ks,' and the 'y' sounds like a short 'i' or 'uh' depending on the dialect, while the 'gen' at the end is pronounced like 'jen.' Another mistake is using 'oxygen' when you mean 'oxidize' or 'oxygenate.' 'Oxygen' is the noun, 'oxidize' is the verb meaning to combine with oxygen (like rusting), and 'oxygenate' is the verb meaning to supply with oxygen (like what lungs do to blood). Confusing these parts of speech can make your writing less precise. For example, you wouldn't say 'The water was oxygen,' you would say 'The water was oxygenated.' Being aware of these distinctions will greatly improve your scientific and technical English.

Grammar: Countability: Oxygen is uncountable. Use 'some oxygen,' 'more oxygen,' or 'a lot of oxygen.' Never use 'a' or 'an' directly before the word oxygen.

Incorrect: The fire needs many oxygens to burn. Correct: The fire needs a lot of oxygen to burn.

Finally, learners sometimes confuse 'oxygen' with 'ozone.' While ozone (O3) is a form of oxygen, it is a different gas with different properties. Ozone in the upper atmosphere protects us from UV rays, but breathing it at ground level is actually toxic. If you are talking about the air we breathe, always use 'oxygen.' Similarly, don't confuse 'oxygen' with 'carbon dioxide.' We breathe in oxygen and breathe out carbon dioxide. In many languages, these words might sound similar or be easily swapped, but in English, keeping them distinct is vital for clarity in biology and environmental science. By avoiding these common pitfalls—confusing oxygen with air, treating it as countable, or mixing it up with related chemicals—you will communicate much more effectively about this essential element.

Scientific Precision: When talking about the gas we breathe, scientists use 'O2.' When talking about the element itself, they use 'Oxygen.' Using 'O' usually refers to a single atom, which is rare in nature.

Incorrect: The patient's air levels are low. Correct: The patient's oxygen levels are low.

The diver made the mistake of thinking he could breathe oxygen at any depth without consequences.

Many people mistakenly say 'I need oxygen' when they just want to open a window for air.

While 'oxygen' is a very specific scientific term, there are several words and phrases you can use depending on the context. If you are speaking generally about the gas we breathe, 'air' is the most common alternative, though it is less precise. In a biological context, you might hear 'breath' or 'respiration' used to describe the act of taking in oxygen. If you are discussing the chemical properties, you might use 'oxidant' or 'oxidizer,' which refers to oxygen's ability to react with other substances. In medical settings, 'supplemental air' or 'respiratory support' are sometimes used as broader terms for providing oxygen to a patient. Understanding these alternatives allows you to choose the word that best fits your specific situation, whether you are writing a scientific paper or having a casual conversation about the weather.

Oxygen vs. Air: Air is the mixture; oxygen is the specific component. Use 'air' for general breathing and 'oxygen' for scientific or medical specifics.
Oxygen vs. Ozone: Oxygen (O2) is what we breathe. Ozone (O3) is a protective layer in the atmosphere but a pollutant at ground level.
Oxygen vs. Oxidizer: Oxygen is the substance. An oxidizer is any substance (including oxygen) that supports combustion or chemical oxidation.

While oxygen is necessary for life, pure air contains many other important gases like nitrogen.

In metaphorical contexts, you have even more options. Instead of saying 'the oxygen of publicity,' you could say 'the lifeblood of the movement' or 'the fuel for the fire.' These alternatives convey a similar sense of necessity and vital energy. If you are describing a person who dominates a conversation, instead of saying they 'suck the oxygen out of the room,' you could say they 'monopolize the attention' or 'overpower the room.' However, the oxygen metaphor is particularly effective because it implies a literal survival need, making it more dramatic. In technical writing, you might replace 'oxygen' with 'O2' or 'dioxygen' to be even more specific about the molecular structure. Each of these choices carries a slightly different nuance, so picking the right one depends on your audience and your goals.

Aerobic vs. Anaerobic: Aerobic means 'with oxygen' (like jogging). Anaerobic means 'without oxygen' (like heavy weightlifting or sprinting).

The chemist compared the reactivity of oxygen with that of fluorine, noting that both are powerful oxidizers.

Finally, consider the word 'atmosphere.' While atmosphere refers to the whole envelope of gases around a planet, it is often used when people are talking about the availability of oxygen. For example, 'The Martian atmosphere is mostly carbon dioxide, with very little oxygen.' This puts oxygen in its larger environmental context. Similarly, 'aeration' is a term used in gardening and water treatment to describe the process of adding oxygen to soil or water. By learning these related terms—air, ozone, oxidizer, lifeblood, atmosphere, and aeration—you build a much richer vocabulary that allows you to describe the world and its processes with greater precision and variety. Oxygen is just the starting point for a whole world of scientific and descriptive language.

Lifeblood (Metaphor): Often used as a synonym for oxygen in business or social contexts. 'Data is the lifeblood (oxygen) of the modern economy.'

In the absence of oxygen, certain bacteria can still survive through a process called fermentation.

The space station's life support system is designed to recycle carbon dioxide back into breathable oxygen.

The term 'hypoxia' is used by medical professionals to describe a state where the body is low on oxygen.

How Formal Is It?

正式

中性

非正式

Child friendly

俚语

趣味小知识

Before it was named oxygen, the gas was called 'dephlogisticated air' by Joseph Priestley, who believed it was air that had been emptied of a substance called phlogiston.

发音指南

UK /ˈɒk.sɪ.dʒən/

US /ˈɑːk.sɪ.dʒən/

Primary stress is on the first syllable: OX-y-gen.

押韵词

hydrogen nitrogen glycogen pathogen hallucinogen carcinogen estrogen antigen

常见错误

Pronouncing the 'x' as 'z' (oz-y-gen). It should be 'ks'.
Stressing the second or third syllable.
Pronouncing 'gen' with a hard 'g' like 'get'. It should be a soft 'j' sound.
Confusing the spelling with 'oxigen' (using 'i' instead of 'y').
Muffling the 'y' sound so it sounds like 'ox-gen'.

难度评级

阅读 2/5

The word is short and common in basic science texts, making it easy to recognize.

写作 3/5

Spelling with a 'y' and 'g' can be slightly tricky for beginners.

口语 2/5

The pronunciation is straightforward once the 'x' sound is mastered.

听力 2/5

It is a distinct-sounding word that is usually easy to catch in conversation.

接下来学什么

前置知识

air breathe gas life plant

接下来学习

carbon dioxide nitrogen atmosphere respiration photosynthesis

高级

oxidation hemoglobin hypoxia oxidizer metabolism

需要掌握的语法

Uncountable Nouns

Oxygen is (not are) necessary for life.

Compound Nouns

He bought a new oxygen tank (oxygen acts as an adjective).

Zero Article with Substances

Plants produce oxygen (no 'the' or 'a').

Prepositional Phrases

The reaction occurs in the presence of oxygen.

Scientific Symbols

The chemical formula for oxygen gas is O2.

按水平分级的例句

We need oxygen to live.

Nous avons besoin d'oxygène pour vivre.

Oxygen is an uncountable noun here.

Plants make oxygen.

Les plantes produisent de l'oxygène.

Simple subject-verb-object structure.

There is oxygen in the air.

Il y a de l'oxygène dans l'air.

Use 'there is' for uncountable substances.

Fish get oxygen from water.

Les poissons tirent l'oxygène de l'eau.

Preposition 'from' shows the source.

Fire needs oxygen to burn.

Le feu a besoin d'oxygène pour brûler.

Infinitive 'to burn' shows purpose.

I breathe oxygen every day.

Je respire de l'oxygène chaque jour.

Present simple for a daily habit.

Trees give us oxygen.

Les arbres nous donnent de l'oxygène.

Indirect object 'us' comes before the direct object.

The doctor gave him oxygen.

Le médecin lui a donné de l'oxygène.

Past simple tense.

Divers carry oxygen tanks underwater.

Les plongeurs transportent des bouteilles d'oxygène sous l'eau.

Compound noun: oxygen tanks.

The air has less oxygen on high mountains.

L'air contient moins d'oxygène sur les hautes montagnes.

Comparative 'less' used with uncountable nouns.

Is there enough oxygen in this room?

Y a-t-il assez d'oxygène dans cette pièce ?

Question form with 'is there' and 'enough'.

The hospital uses oxygen to help patients breathe.

L'hôpital utilise de l'oxygène pour aider les patients à respirer.

Infinitive phrase 'to help patients breathe'.

Without oxygen, the fire will go out.

Sans oxygène, le feu s'éteindra.

Preposition 'without' starts the conditional phrase.

Forests provide the oxygen we need.

Les forêts fournissent l'oxygène dont nous avons besoin.

Relative clause 'we need' modifies oxygen.

The scientist is measuring the oxygen in the water.

Le scientifique mesure l'oxygène dans l'eau.

Present continuous tense.

Humans cannot live without oxygen for long.

Les humains ne peuvent pas vivre longtemps sans oxygène.

Modal verb 'cannot' for inability.

Regular exercise improves your body's oxygen intake.

L'exercice régulier améliore l'apport en oxygène de votre corps.

Possessive 'body's' modifying the compound noun.

The patient's oxygen levels were monitored throughout the night.

Les niveaux d'oxygène du patient ont été surveillés toute la nuit.

Passive voice 'were monitored'.

Climbers often use supplemental oxygen when they reach high altitudes.

Les grimpeurs utilisent souvent de l'oxygène d'appoint lorsqu'ils atteignent de hautes altitudes.

Adjective 'supplemental' provides specific detail.

Pollution can reduce the amount of oxygen in lakes and rivers.

La pollution peut réduire la quantité d'oxygène dans les lacs et les rivières.

Modal 'can' expresses possibility.

The brain requires a constant supply of oxygen to function properly.

Le cerveau nécessite un apport constant d'oxygène pour fonctionner correctement.

Verb 'requires' is more formal than 'needs'.

If you don't get enough oxygen, you might feel dizzy.

Si vous ne recevez pas assez d'oxygène, vous pourriez vous sentir étourdi.

First conditional structure.

The spaceship has a system to generate its own oxygen.

Le vaisseau spatial dispose d'un système pour générer son propre oxygène.

Reflexive 'its own' emphasizes self-sufficiency.

Oxygen is a highly reactive gas that combines with many elements.

L'oxygène est un gaz très réactif qui se combine avec de nombreux éléments.

Relative clause 'that combines...' adds scientific detail.

The Great Oxidation Event significantly changed the Earth's atmosphere by increasing oxygen levels.

La Grande Oxydation a considérablement modifié l'atmosphère terrestre en augmentant les niveaux d'oxygène.

Adverb 'significantly' modifies the verb 'changed'.

The scandal deprived the campaign of the oxygen of publicity it needed to survive.

Le scandale a privé la campagne de l'oxygène médiatique dont elle avait besoin pour survivre.

Metaphorical use of 'oxygen' in a formal context.

Hemoglobin is the protein in red blood cells that carries oxygen throughout the body.

L'hémoglobine est la protéine des globules rouges qui transporte l'oxygène dans tout le corps.

Technical scientific description.

During aerobic respiration, glucose is broken down in the presence of oxygen to release energy.

Pendant la respiration aérobie, le glucose est décomposé en présence d'oxygène pour libérer de l'énergie.

Prepositional phrase 'in the presence of'.

The industrial process uses liquid oxygen as a powerful oxidizer for rocket fuel.

Le processus industriel utilise de l'oxygène liquide comme puissant comburant pour le carburant de fusée.

Noun phrase 'liquid oxygen' as an object.

Environmentalists are concerned about the declining oxygen concentrations in the world's oceans.

Les écologistes sont préoccupés par la baisse des concentrations d'oxygène dans les océans du monde.

Participle 'declining' as an adjective.

The athlete's VO2 max is a key indicator of their aerobic capacity and oxygen efficiency.

Le VO2 max de l'athlète est un indicateur clé de sa capacité aérobie et de son efficacité en oxygène.

Technical sports science terminology.

The room felt stuffy as if the large crowd was sucking all the oxygen out of the air.

La pièce semblait étouffante, comme si la foule nombreuse aspirait tout l'oxygène de l'air.

Simile 'as if' used for descriptive effect.

The subtle interplay between oxygen levels and cellular signaling is a major focus of modern oncology.

L'interaction subtile entre les niveaux d'oxygène et la signalisation cellulaire est un axe majeur de l'oncologie moderne.

Complex noun phrase 'subtle interplay between...'

By starving the movement of the oxygen of publicity, the government hoped to neutralize its influence.

En privant le mouvement de l'oxygène médiatique, le gouvernement espérait neutraliser son influence.

Gerund phrase 'By starving...' showing means.

The synthesis of ozone occurs when ultraviolet radiation strikes oxygen molecules in the stratosphere.

La synthèse de l'ozone se produit lorsque le rayonnement ultraviolet frappe les molécules d'oxygène dans la stratosphère.

Temporal clause 'when ultraviolet radiation strikes...'.

Hyperbaric oxygen therapy involves breathing pure oxygen in a pressurized chamber to accelerate healing.

L'oxygénothérapie hyperbare consiste à respirer de l'oxygène pur dans une chambre pressurisée pour accélérer la guérison.

Gerund 'breathing' as the object of 'involves'.

The reactivity of oxygen is such that it must be handled with extreme caution in industrial settings.

La réactivité de l'oxygène est telle qu'il doit être manipulé avec une extrême prudence dans les milieux industriels.

Structure 'is such that' for emphasis.

The discovery of oxygen by Joseph Priestley in 1774 marked a turning point in the history of chemistry.

La découverte de l'oxygène par Joseph Priestley en 1774 a marqué un tournant dans l'histoire de la chimie.

Appositive phrase 'by Joseph Priestley in 1774'.

Isotopic analysis of oxygen trapped in ice cores provides invaluable data on prehistoric climates.

L'analyse isotopique de l'oxygène piégé dans les carottes de glace fournit des données inestimables sur les climats préhistoriques.

Past participle 'trapped' as an adjective.

The author uses the lack of oxygen as a recurring motif to symbolize the stifling nature of the regime.

L'auteur utilise le manque d'oxygène comme un motif récurrent pour symboliser la nature étouffante du régime.

Infinitive 'to symbolize' showing intent.

The paradoxical nature of oxygen, being both essential for life and a source of oxidative stress, is a cornerstone of aging research.

La nature paradoxale de l'oxygène, étant à la fois essentiel à la vie et une source de stress oxydatif, est une pierre angulaire de la recherche sur le vieillissement.

Participial phrase 'being both essential...' adding complexity.

The demagogue's rhetoric sought to suck the oxygen out of any rational debate, leaving only emotional fervor.

La rhétorique du démagogue cherchait à vider tout débat rationnel de son oxygène, ne laissant que la ferveur émotionnelle.

Metaphorical idiom 'suck the oxygen out of'.

In the vacuum of space, the absence of oxygen is the most immediate and unforgiving threat to human life.

Dans le vide spatial, l'absence d'oxygène est la menace la plus immédiate et la plus impitoyable pour la vie humaine.

Superlative adjectives 'most immediate and unforgiving'.

The oxygen-rich atmosphere of the Carboniferous period allowed for the evolution of giant insects.

L'atmosphère riche en oxygène de la période carbonifère a permis l'évolution d'insectes géants.

Compound adjective 'oxygen-rich'.

Lavoisier's nomenclature of 'oxygen' was predicated on the erroneous belief that it was the essential component of all acids.

La nomenclature de Lavoisier pour l'oxygène était fondée sur la croyance erronée qu'il était le composant essentiel de tous les acides.

Passive voice 'was predicated on'.

The sudden influx of capital provided the oxygen that allowed the flailing startup to pivot successfully.

L'afflux soudain de capitaux a fourni l'oxygène qui a permis à la startup en difficulté de pivoter avec succès.

Relative clause 'that allowed...' with a complex subject.

Oxygen's role as a terminal electron acceptor is what makes aerobic metabolism so much more efficient than its anaerobic counterpart.

Le rôle de l'oxygène en tant qu'accepteur final d'électrons est ce qui rend le métabolisme aérobie tellement plus efficace que son homologue anaérobie.

Noun clause 'what makes...' as a complement.

The sheer ubiquity of oxygen in the Earth's crust, primarily in the form of oxides, is often overlooked.

L'ubiquité même de l'oxygène dans la croûte terrestre, principalement sous forme d'oxydes, est souvent négligée.

Parenthetical phrase 'primarily in the form of oxides'.

近义词

O2 vital air life-giving gas atmospheric oxygen

反义词

carbon dioxide nitrogen vacuum

常见搭配

oxygen levels

oxygen tank

oxygen mask

pure oxygen

oxygen supply

oxygen intake

oxygen depletion

dissolved oxygen

oxygen therapy

liquid oxygen

常用短语

on oxygen

short of oxygen

oxygen-rich

oxygen-starved

give oxygen to

oxygen sensor

oxygen saturation

oxygen cylinder

oxygen bar

oxygen cycle

容易混淆的词

oxygen vs air

Air is the mixture of gases; oxygen is just one of those gases (21%).

oxygen vs ozone

Ozone (O3) is a different form of oxygen that is toxic to breathe but protects the Earth from UV rays.

oxygen vs nitrogen

Nitrogen is the most abundant gas in the air (78%), but we don't use it for breathing like we use oxygen.

习语与表达

"the oxygen of publicity"

The media attention that is necessary for someone or something to remain famous or influential.

By ignoring the extremist group, the media denied them the oxygen of publicity.

Journalistic/Political

"suck the oxygen out of the room"

To dominate a situation or conversation so much that no one else can be heard or noticed.

The CEO's loud personality tended to suck the oxygen out of the room during meetings.

Informal/Business

"a breath of fresh air"

A person or thing that is new, different, and exciting (related to the feeling of getting oxygen).

The new manager's positive attitude was a breath of fresh air for the team.

General

"gasping for oxygen"

Literally struggling to breathe, or metaphorically being in desperate need of something.

The small business was gasping for oxygen after the economic downturn.

Informal

"deprive of oxygen"

To take away the essential element needed for survival or success.

The new regulations threatened to deprive the startup of the oxygen it needed to grow.

Formal

"oxygen for the soul"

Something that provides deep spiritual or emotional nourishment.

For many people, music is like oxygen for the soul.

Literary

"give someone oxygen"

To give someone the space, time, or resources they need to succeed.

The mentor's role is to give the student enough oxygen to develop their own ideas.

Professional

"thin oxygen"

Often used to describe high-stakes, high-pressure environments (like high altitudes).

Working at the executive level means living in a world of thin oxygen.

Metaphorical

"oxygen-depleted"

Lacking energy or vitality.

The conversation felt oxygen-depleted after hours of arguing.

Metaphorical

"the very oxygen we breathe"

Something that is so fundamental that it is taken for granted.

In the digital age, data has become the very oxygen we breathe.

Rhetorical

容易混淆

oxygen vs Oxidize

It sounds like oxygen and is related to it.

Oxygen is the noun (the gas). Oxidize is the verb (the process of reacting with oxygen).

Iron will oxidize and turn into rust when exposed to oxygen.

oxygen vs Oxygenate

It is a verb form of oxygen.

Oxygenate means to supply or treat something with oxygen, whereas oxygen is the substance itself.

The machine helps to oxygenate the patient's blood.

oxygen vs Oxide

It is a chemical term related to oxygen.

An oxide is a compound that contains oxygen and another element, like iron oxide (rust).

Carbon dioxide is a common oxide found in the atmosphere.

oxygen vs Aerobic

It describes things related to oxygen.

Aerobic is an adjective meaning 'requiring oxygen,' often used for exercise or bacteria.

Running is an aerobic exercise because it uses a lot of oxygen.

oxygen vs Hypoxia

It is a medical term about oxygen.

Hypoxia is the medical condition of not having enough oxygen in the tissues.

The climber suffered from hypoxia at the high altitude.

句型

[Subject] need(s) oxygen.

Animals need oxygen.

There is [amount] oxygen in [place].

There is less oxygen in the mountains.

[Subject] is essential for [process].

Oxygen is essential for burning wood.

[Subject] provides the oxygen of [metaphor].

Social media provides the oxygen of fame.

The depletion of oxygen leads to [consequence].

The depletion of oxygen leads to the death of aquatic life.

Oxygen acts as a [scientific role] in [context].

Oxygen acts as a terminal electron acceptor in metabolism.

[Subject] is monitored for oxygen [noun].

The patient is monitored for oxygen saturation.

[Subject] carry oxygen [equipment].

Divers carry oxygen tanks.

词族

名词

动词

形容词

如何使用

frequency

Very common in both spoken and written English, especially in health and science contexts.

常见错误

I need an oxygen. → I need some oxygen.
Oxygen is an uncountable noun, so you cannot use the indefinite article 'an'.
The plants produce airs. → The plants produce oxygen.
Plants produce a specific gas (oxygen), not 'airs'. Also, 'air' is usually uncountable.
The fire was out of oxygens. → The fire ran out of oxygen.
You cannot pluralize oxygen in this context. It is a single substance.
He has low air levels in his blood. → He has low oxygen levels in his blood.
Blood carries oxygen, not 'air'. Using 'air' here is scientifically incorrect.
The room was oxygened. → The room was oxygenated.
The correct verb form for supplying oxygen is 'oxygenated', not 'oxygened'.

小贴士

Uncountable Noun

Never use 'a' or 'an' with oxygen. Say 'some oxygen' or 'the oxygen' instead. It is treated like water or sand.

Oxygen vs. Air

In casual talk, you can say 'fresh air,' but in science or medicine, always use 'oxygen' to refer to the specific gas.

The 'X' Sound

The 'x' in oxygen is pronounced like 'ks'. Make sure you don't skip the 'k' sound. It's 'OK-si-jen'.

The Letter 'Y'

Many learners want to spell it 'oxigen' with an 'i'. Remember it uses a 'y', just like 'hydrogen' and 'nitrogen'.

Medical Color

In many countries, oxygen tanks and pipes are color-coded green. This is a helpful visual cue in hospitals.

O2 Symbol

When you see 'O2' in a text, read it as 'oxygen' or 'oh-two'. It refers to the gas form we breathe.

Plant Power

Remember that plants 'exhale' oxygen during the day but 'inhale' a little bit at night. However, they produce much more than they use.

Publicity Metaphor

Use the phrase 'oxygen of publicity' to describe how media attention keeps a story or person relevant.

Fire Triangle

Oxygen is one of the three things a fire needs. Removing oxygen (smothering) is a common way to put out a fire.

Deep Breathing

Deep breathing exercises help increase the oxygen in your blood, which can help you feel more relaxed and focused.

记住它

记忆技巧

Think of an 'OX' (the animal) breathing in a 'GEN' (garden). OX-Y-GEN. The ox needs it to live in the garden.

视觉联想

Imagine a bright green forest with invisible bubbles of 'O2' floating up from the leaves into your lungs.

Word Web

Breathing Plants Fire Hospital Diving Space Air Life

挑战

Try to explain the process of photosynthesis to a friend using the word 'oxygen' at least three times in one minute.

词源

The word 'oxygen' was coined in 1777 by the French chemist Antoine Lavoisier. He derived it from the Greek words 'oxys', meaning 'acid' or 'sharp', and 'genes', meaning 'forming' or 'producer'.

原始含义： Lavoisier mistakenly believed that oxygen was a necessary component of all acids. While we now know this is incorrect (many acids do not contain oxygen), the name remained.

Greek roots via French scientific nomenclature.

文化背景

Be careful when discussing oxygen in medical contexts with patients; low oxygen levels can be a source of great anxiety.

In the UK and US, 'oxygen' is a standard part of the school science curriculum from a young age. It is also a frequent topic in health-conscious media.

The song 'Oxygen' by Jean-Michel Jarre. The movie 'Apollo 13', where oxygen leaks are a central plot point. Margaret Thatcher's famous 'oxygen of publicity' speech.

在生活中练习

真实语境

Medical

check oxygen levels
on supplemental oxygen
oxygen saturation
administer oxygen

Environmental

oxygen production
depletion of oxygen
oxygen-rich atmosphere
dissolved oxygen

Sports/Fitness

oxygen intake
VO2 max
oxygen debt
aerobic exercise

Science/Chemistry

oxygen molecule
oxidation process
atomic number 8
reactive oxygen

Safety/Emergency

oxygen mask
oxygen tank
deprived of oxygen
oxygen leak

对话开场白

"Did you know that the Earth didn't always have oxygen in its atmosphere?"

"How do you think humans would change if there was more oxygen in the air?"

"Have you ever used an oxygen tank for diving or hiking?"

"Do you think we should do more to protect the forests that produce our oxygen?"

"What would happen to a fire if we suddenly removed all the oxygen?"

日记主题

Describe a time when you felt out of breath. How did it feel when you finally got enough oxygen?

Write about the importance of trees in your city. How do they contribute to the oxygen you breathe?

Imagine you are an astronaut on a planet with no oxygen. How would you survive?

Think about the metaphor 'the oxygen of publicity.' Can you name a recent event where this was true?

If you could create a machine that produces unlimited oxygen, how would it change the world?

常见问题

10 个问题

While it is possible for short periods in medical or diving situations, breathing 100% pure oxygen for a long time can be toxic. It can damage the lungs and central nervous system. Our bodies are evolved to breathe air that is only 21% oxygen.

Most of the oxygen in our atmosphere is produced by plants, algae, and cyanobacteria through the process of photosynthesis. They use sunlight to convert carbon dioxide and water into energy and release oxygen as a byproduct.

Technically, oxygen itself does not burn. However, it is an 'oxidizer,' which means it supports combustion. Fire needs oxygen to burn, and things burn much more intensely and quickly in an environment with high oxygen levels.

The sky is blue because of a phenomenon called Rayleigh scattering. When sunlight enters the atmosphere, it hits the molecules of nitrogen and oxygen, scattering the blue light in all directions. It's not the color of the oxygen itself.

Most people can only survive for about 3 to 6 minutes without oxygen before permanent brain damage occurs. After about 10 minutes, death is almost certain. This is why emergency response for breathing issues is so critical.

Yes, fish need oxygen just like humans. However, they get it from the water. Water contains 'dissolved oxygen,' and fish use their gills to extract this oxygen as water passes over them.

Liquid oxygen (LOX) is used as a powerful oxidizer in rocket engines. It is also used in industry for steelmaking and in some specialized medical applications where large amounts of oxygen need to be stored in a small space.

Mars has a very thin atmosphere that is 95% carbon dioxide. There are only trace amounts of oxygen (about 0.13%). Future missions hope to use machines to extract oxygen from the Martian atmosphere for astronauts to breathe.

Oxygen saturation is a measure of how much oxygen your red blood cells are carrying. It is usually measured with a small device called a pulse oximeter that clips onto your finger. A normal reading is 95% to 100%.

Oxygen is used by our cells to create energy (ATP). When oxygen levels are low, our cells cannot produce energy efficiently, leading to feelings of fatigue, dizziness, and weakness.