A decade is like a group of ten years. Imagine counting one, two, three, all the way to ten – that's a decade!
People often talk about decades when they are looking back at history. For example, the 1980s was a decade with special music and clothes.
Your life has decades too! When you are a baby, then a child, then a teenager – these are different parts of your life that can be grouped into decades.
It helps us understand how long ago something happened or how much time has passed.
A decade refers to a period of ten consecutive years. For example, the 1990s were a decade. It's often used when talking about significant periods in history, personal growth, or professional development.
We might say, 'Over the past two decades, technology has advanced rapidly,' meaning in the last twenty years. This word helps us describe and categorize longer stretches of time in a clear and concise way.
§ What does it mean and when do people use it?
The word "decade" is a fundamental unit for measuring time, specifically referring to a period of ten consecutive years. It's a term that allows us to group and discuss longer stretches of time more conveniently than listing individual years. While a year provides a granular view and a century offers a very broad perspective, the decade strikes a balance, providing enough context to observe trends, developments, and changes over a meaningful span.
- DEFINITION
- A decade is a period of ten consecutive years. The term is commonly used to describe long spans of time in history, personal life, or professional careers.
The origin of the word "decade" comes from the Greek word "deka," meaning ten. This linguistic root is also found in other words related to ten, such as "decathlon" (an athletic contest comprising ten events) or "decimal" (a number system based on ten). This etymology underscores the core meaning of the word: a set of ten.
When do people use it? "Decade" is incredibly versatile and appears in a wide array of contexts. Here are some of the most common situations:
- Historical Analysis: Historians frequently use decades to segment and analyze historical periods, identifying key events, cultural shifts, or political movements that defined a particular ten-year stretch. For instance, discussing "the Roaring Twenties" or "the Swinging Sixties" immediately conjures specific images and characteristics of those eras.
- Personal Reflection: Individuals often reflect on their lives in terms of decades. People might talk about what they accomplished in their 20s, the challenges they faced in their 30s, or the wisdom gained over several decades. It provides a natural framework for life's milestones and evolving experiences.
- Professional and Economic Trends: In business, economics, and various professional fields, decades are used to observe long-term trends, growth patterns, or periods of stagnation. Companies might review their performance over the last decade, or economists might discuss economic shifts that occurred across several decades.
- Scientific and Technological Progress: The rapid pace of innovation often leads to significant breakthroughs within a decade. Scientists might discuss advancements made in a particular field over the past two decades, or engineers might refer to the technological leaps that defined a specific decade.
- Cultural and Social Commentary: Decades are also powerful markers for cultural trends, fashion, music, and social movements. We often categorize music by decades (e.g., 80s pop, 90s grunge) or discuss the social changes that characterized a particular decade, such as environmental awareness gaining prominence in recent decades.
The last three decades have seen unprecedented advancements in digital technology.
She dedicated several decades of her life to researching ancient civilizations.
The fashion trends of the 1970s defined an entire decade.
Understanding "decade" is crucial for comprehending discussions about historical periods, societal changes, and long-term developments. It's a foundational word for anyone looking to articulate or understand broad temporal spans effectively.
§ How to use it in a sentence — grammar, prepositions
- DEFINITION
- A decade is a period of ten consecutive years. The term is commonly used to describe long spans of time in history, personal life, or professional careers.
The word 'decades' is a plural noun, meaning multiple periods of ten years. When using 'decades' in a sentence, it's essential to consider its grammatical function and the prepositions that often accompany it.
§ Basic Usage
As a plural noun, 'decades' functions like any other plural noun in a sentence. It can be the subject of a sentence, the object of a verb, or the object of a preposition.
The last three decades have seen significant technological advancements.
She dedicated several decades to her research.
§ Prepositions with 'Decades'
Several prepositions are commonly used with 'decades' to indicate duration, starting points, or changes over time.
- For decades: This phrase emphasizes a continuous period of ten years. It's often used to describe something that has been happening or existing for a long time.
The old oak tree has stood in the park for decades.
- Over decades: Similar to 'for decades,' this preposition also indicates a span of time, but it often implies a gradual change or development throughout that period.
The climate has changed significantly over decades.
- In recent decades: This phrase is used to refer to the decades immediately preceding the present time.
There has been a rapid increase in internet usage in recent decades.
- Throughout the decades: This indicates that something has happened or existed continuously from the beginning to the end of a series of decades.
Her artistic style remained consistent throughout the decades.
§ Referring to Specific Decades
When referring to a specific ten-year period, we often use the definite article 'the' followed by the decade's numerical identifier (e.g., 'the 1980s', 'the 90s').
Fashion in the 1970s was very distinctive.
The music of the 80s is still popular today.
When using 'decades' more generally to describe an unspecified number of ten-year periods, you might use it with quantifiers.
- Many decades: Indicates a large, but unspecified, number of ten-year periods.
It will take many decades to fully restore the ecosystem.
- Several decades: Suggests a moderate, but unspecified, number of ten-year periods.
The project has been in development for several decades.
§ Common Mistakes to Avoid
One common mistake is using 'decades' incorrectly with singular verbs or without the proper articles when referring to specific timeframes.
- Incorrect: 'Decades is a long time.'
- Correct: 'Decades are a long time.' (Here, 'decades' is treated as a plural subject.)
- Incorrect: 'In 1980 decade, music was different.'
- Correct: 'In the 1980s, music was different.'
Another error can be using 'decades' when 'years' or 'a decade' would be more appropriate.
- If you mean exactly ten years: use 'a decade'.
- If you mean a specific number of years that isn't necessarily a multiple of ten: use 'years'.
She lived in Paris for a decade.
He has been working here for fifteen years.
难度评级
Common word, but might be confused with 'century' or 'millennium'.
Straightforward to spell and use in simple sentences.
Easy to pronounce, common in everyday conversation.
Clear pronunciation, easily distinguishable from similar words.
接下来学什么
前置知识
接下来学习
高级
需要掌握的语法
Nouns that refer to periods of time can often be used with 'ago' to indicate a past duration. 'Decades ago' means ten or more years in the past.
Decades ago, life was very different.
The plural form of 'decade' is 'decades'. When referring to multiple decades, the plural is used without an apostrophe.
The 1980s and 1990s were two distinct decades.
When using 'decades' to describe a general period without specifying which ones, it often implies a significant amount of time.
It has been decades since we last met.
The word 'decades' can be used as a modifier before another noun to describe something that has lasted for many decades.
They lived in a decades-old house.
When referring to a specific decade, an article (usually 'the') is used with the decade's number, for example, 'the 1960s'. However, 'decades' on its own refers to an unspecified period of ten years or more.
The fashion trends of several decades have come and gone.
按水平分级的例句
Over the decades, environmental awareness has grown significantly, leading to policy changes and conservation efforts worldwide.
Im Laufe der Jahrzehnte ist das Umweltbewusstsein erheblich gestiegen, was zu politischen Änderungen und Naturschutzbemühungen weltweit geführt hat.
The phrase 'Over the decades' indicates a span of time, often implying continuous development or change.
The company has been a leader in technological innovation for several decades, consistently introducing groundbreaking products.
Das Unternehmen ist seit mehreren Jahrzehnten führend in der technologischen Innovation und bringt kontinuierlich bahnbrechende Produkte auf den Markt.
'For several decades' emphasizes a prolonged period of sustained activity or status.
After decades of dedicated research, scientists finally achieved a major breakthrough in cancer treatment.
Nach jahrzehntelanger engagierter Forschung gelang Wissenschaftlern endlich ein großer Durchbruch in der Krebsbehandlung.
'After decades of...' highlights the extensive duration of an effort or process before a significant outcome.
The fashion industry has witnessed dramatic shifts in trends and styles over the past few decades.
Die Modebranche hat in den letzten Jahrzehnten dramatische Verschiebungen in Trends und Stilen erlebt.
'Over the past few decades' refers to a specific recent period of multiple ten-year spans.
His career spanned five decades, during which he held numerous influential positions and mentored countless aspiring professionals.
Seine Karriere erstreckte sich über fünf Jahrzehnte, in denen er zahlreiche einflussreiche Positionen innehatte und unzählige angehende Fachleute betreute.
'Spanned five decades' precisely quantifies the length of a career or a similar long-term activity.
The city's infrastructure, developed over many decades, now requires significant investment for modernization and repair.
Die Infrastruktur der Stadt, die über viele Jahrzehnte entwickelt wurde, erfordert nun erhebliche Investitionen für Modernisierung und Reparatur.
'Developed over many decades' implies a gradual and extensive process of creation or growth.
For decades, the old factory stood as a decaying monument to a bygone industrial era.
Jahrzehntelang stand die alte Fabrik als verfallendes Denkmal einer vergangenen Industriezeit da.
'For decades' at the beginning of a sentence often sets the stage for a description of a long-standing situation or condition.
The cultural exchange program has fostered stronger international relations for several decades, bridging gaps between nations.
Das Kulturaustauschprogramm hat seit mehreren Jahrzehnten stärkere internationale Beziehungen gefördert und Brücken zwischen den Nationen geschlagen.
'For several decades' combined with a present perfect verb emphasizes an ongoing positive impact over a long period.
习语与表达
"a decade of decadence"
A period of ten years characterized by moral or cultural decline, excessive indulgence, or luxurious self-gratification.
The 1920s are often referred to as 'a decade of decadence' due to the widespread social and moral changes after World War I.
neutral"the lost decade"
Refers to a period of economic stagnation or decline, often specifically to Japan's economic slump in the 1990s.
After the real estate bubble burst, the country entered 'the lost decade,' struggling with low growth and deflation.
neutral"decades in the making"
Something that has taken a very long time, often many tens of years, to develop or be completed.
The grand cathedral was a project 'decades in the making,' with construction spanning over a century.
neutral"turning the decade"
The act of moving from one decade to the next, often implying a significant change or transition.
As we were 'turning the decade,' many wondered what new technologies the 2020s would bring.
neutral"a decade of progress"
A ten-year period marked by significant advancements or improvements in a particular field or area.
The 1960s were 'a decade of progress' in space exploration, culminating in the moon landing.
neutral"span decades"
To cover or extend over many ten-year periods, indicating a very long duration.
Their friendship 'spanned decades,' having known each other since childhood.
neutral"a new decade, a new me"
A common phrase expressing a desire for personal change and self-improvement with the start of a new ten-year period.
She declared 'a new decade, a new me' as she embarked on a healthier lifestyle and new career goals.
informal"decades of experience"
A vast amount of experience gained over many ten-year periods, implying deep knowledge and expertise.
The seasoned surgeon had 'decades of experience' in complex procedures, making him highly sought after.
neutral"to roll back the decades"
To return to a state or condition that existed many years ago, often in a metaphorical sense.
The band's reunion concert felt like it 'rolled back the decades' for their long-time fans.
neutral"the intervening decades"
The ten-year periods that have passed between two specific points in time.
Much has changed in the city during 'the intervening decades' since I last visited.
neutral词族
名词
形容词
记住它
记忆技巧
Imagine a **DEC**imal (base 10) system. A **DECADE** has **TEN** years, just like a decimal system is based on ten.
视觉联想
Visualize a Roman numeral 'X' (for ten), with each line of the 'X' representing five years, totaling ten years. Or, think of a large calendar with '10' prominently displayed, symbolizing ten years.
Word Web
挑战
Think about a significant event that happened ten years ago in your life, or in history. How has society, technology, or your personal situation changed in the past two decades? Describe these changes using the word 'decade' at least twice.
自我测试 36 个问题
How many years are in a decade?
A decade means a period of ten years.
Which word means 'ten years'?
A decade is a period of ten years.
My grandfather lived for many _______. He was very old.
Decades means many periods of ten years, which shows he lived for a long time.
A decade is a short time.
A decade is ten years, which is a long time.
We use the word 'decade' to talk about a period of ten years.
The definition of a decade is ten years.
My new shoes will last for many decades.
Shoes usually do not last for ten years or more.
Listen for how long the grandparents have been married.
Listen for how many decades the town has changed.
Listen for how long she has worked as a teacher.
Read this aloud:
My family lived in that house for many decades.
Focus: decades
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Read this aloud:
The company has been successful for several decades.
Focus: several, decades
你说的：
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Read this aloud:
He has been collecting stamps for over three decades.
Focus: collecting, decades
你说的：
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Describe a significant technological advancement that has occurred in the past few decades and explain its impact on society.
Well written! Good try! Check the sample answer below.
Sample answer
Over the past few decades, the internet has emerged as a truly transformative technological advancement. Its widespread adoption has profoundly impacted society, revolutionizing communication, commerce, and access to information. From connecting people across continents to facilitating global business operations, the internet's influence continues to grow.
Reflect on how your personal goals and aspirations have evolved over the past decades, or how you anticipate they might change in the coming decades.
Well written! Good try! Check the sample answer below.
Sample answer
Looking back over the past decades, my personal goals have shifted from focusing primarily on academic achievements to prioritizing professional development and personal growth. In the coming decades, I anticipate my aspirations will further evolve to include a greater emphasis on contributing to my community and maintaining a healthy work-life balance.
Imagine you are writing a letter to someone living a century from now. Describe how daily life, fashion, or popular culture has changed in the recent decades and what you predict for the future.
Well written! Good try! Check the sample answer below.
Sample answer
Dear Future Correspondent, It's fascinating to consider how much daily life has transformed in just the past few decades. The rapid rise of digital communication and artificial intelligence has reshaped how we work, socialize, and entertain ourselves. I predict that in the next decades, we will see even more immersive virtual realities and personalized AI assistants becoming commonplace.
What is the main idea of the passage?
Read this passage:
For many decades, scientists have been studying climate change, observing shifts in global temperatures, sea levels, and extreme weather events. The data collected over these long spans of time consistently points to human activity as a significant factor in these environmental changes. Understanding these patterns is crucial for developing effective strategies to mitigate the impact of climate change in the coming years.
What is the main idea of the passage?
The passage clearly states that scientists have been studying climate change for 'many decades' and that the data 'consistently points to human activity' as a cause.
The passage clearly states that scientists have been studying climate change for 'many decades' and that the data 'consistently points to human activity' as a cause.
What was the condition of the city's downtown area before the revitalization?
Read this passage:
The city's downtown area has undergone significant revitalization over the past few decades. Abandoned buildings have been transformed into vibrant commercial spaces and modern residential complexes. This urban renewal has attracted new businesses and residents, breathing new life into what was once a neglected part of the city. The transformation reflects a broader trend of reinvestment in urban centers.
What was the condition of the city's downtown area before the revitalization?
The passage states that 'Abandoned buildings have been transformed' and that it was 'once a neglected part of the city', indicating its prior condition.
The passage states that 'Abandoned buildings have been transformed' and that it was 'once a neglected part of the city', indicating its prior condition.
What is the primary factor that has caused dramatic shifts in the music industry over the past decades?
Read this passage:
The music industry has seen dramatic shifts over the last few decades, transitioning from physical album sales to digital downloads and, more recently, to streaming services. This evolution has changed how artists produce and distribute music, and how audiences consume it. While some aspects remain constant, like the desire for compelling melodies, the business model has fundamentally changed in a relatively short span of decades.
What is the primary factor that has caused dramatic shifts in the music industry over the past decades?
The passage explicitly mentions the transition from 'physical album sales to digital downloads and, more recently, to streaming services' as the cause of the shifts.
The passage explicitly mentions the transition from 'physical album sales to digital downloads and, more recently, to streaming services' as the cause of the shifts.
Reflect on how technological advancements over the past two decades have fundamentally reshaped global communication, discussing both the positive and negative implications for societal interaction and individual privacy.
Well written! Good try! Check the sample answer below.
Sample answer
Over the past two decades, technological advancements have profoundly transformed global communication. The advent of the internet, smartphones, and social media platforms has facilitated instant, ubiquitous connection across geographical boundaries, fostering unprecedented levels of cultural exchange and collaboration. However, this revolution has also introduced significant challenges. The constant barrage of information and the erosion of privacy through data collection raise concerns about mental well-being and surveillance. Furthermore, the spread of misinformation and the formation of echo chambers threaten democratic discourse. Navigating these complex dynamics requires a critical understanding of technology's dual nature and a commitment to ethical digital practices.
Examine the long-term economic shifts that have occurred in a specific region or country over the last few decades, considering factors such as industrial change, globalization, and policy decisions. What were the most significant drivers of these changes, and what are their lasting consequences?
Well written! Good try! Check the sample answer below.
Sample answer
In examining the economic shifts in Southeast Asia over the past few decades, it's clear that globalization and strategic policy decisions have been paramount. The region's pivot from agrarian economies to manufacturing hubs, fueled by foreign direct investment and export-oriented policies, has driven unprecedented growth. This industrialization, coupled with increasing integration into global supply chains, lifted millions out of poverty and established a burgeoning middle class. However, these changes have also exacerbated income inequality and placed considerable strain on environmental resources. The lasting consequences include a complex interplay of rapid urbanization, heightened geopolitical significance, and the ongoing challenge of sustainable development, demanding nuanced policy responses to ensure equitable and resilient future growth.
Discuss the evolution of environmental awareness and policy over the last three decades. What key events or scientific discoveries propelled this change, and what challenges remain in achieving global environmental sustainability?
Well written! Good try! Check the sample answer below.
Sample answer
Over the last three decades, environmental awareness and policy have undergone a significant transformation, largely propelled by escalating scientific evidence of climate change and biodiversity loss. Landmark events such as the Rio Earth Summit in 1992 and the establishment of the IPCC have been crucial in galvanizing international cooperation and prompting national policy shifts towards renewable energy and conservation. Public consciousness has also been heightened by visible impacts of climate change and impactful documentaries. Despite these advancements, formidable challenges persist. Political inertia, economic dependencies on fossil fuels, and the equitable distribution of responsibility between developed and developing nations continue to hinder comprehensive global sustainability. Addressing these requires a concerted effort to foster innovative solutions and ensure collective adherence to environmental stewardship principles.
According to the passage, what is a primary reason the Arctic region is a focal point of climate change research?
Read this passage:
For decades, the Arctic region has been a focal point of climate change research, with scientists observing alarming rates of ice melt and ecosystem disruption. The rapid changes are not merely localized phenomena but have far-reaching global implications, affecting ocean currents, sea levels, and weather patterns across continents. Understanding these complex interdependencies is crucial for predicting future climatic shifts and formulating effective mitigation strategies.
According to the passage, what is a primary reason the Arctic region is a focal point of climate change research?
The passage explicitly states, 'For decades, the Arctic region has been a focal point of climate change research, with scientists observing alarming rates of ice melt and ecosystem disruption.'
The passage explicitly states, 'For decades, the Arctic region has been a focal point of climate change research, with scientists observing alarming rates of ice melt and ecosystem disruption.'
What distinguishes modern AI approaches from earlier systems, according to the passage?
Read this passage:
The evolution of artificial intelligence over the past few decades has moved from theoretical concepts to tangible applications, profoundly impacting various industries. While early AI systems were primarily rule-based, modern approaches leverage machine learning and deep neural networks, enabling remarkable feats in data analysis, natural language processing, and autonomous systems. This rapid advancement presents both immense opportunities for innovation and significant ethical dilemmas concerning job displacement and algorithmic bias.
What distinguishes modern AI approaches from earlier systems, according to the passage?
The passage states, 'While early AI systems were primarily rule-based, modern approaches leverage machine learning and deep neural networks...'
The passage states, 'While early AI systems were primarily rule-based, modern approaches leverage machine learning and deep neural networks...'
What is identified as a current threat to the progress made in reducing infectious disease mortality?
Read this passage:
In the realm of public health, the last several decades have witnessed a remarkable decline in mortality rates from infectious diseases in many parts of the world, largely due to advancements in vaccination, sanitation, and antimicrobial therapies. However, this progress is now threatened by the rise of antibiotic-resistant bacteria and the emergence of new pathogens, underscoring the continuous need for vigilance and innovation in disease prevention and treatment.
What is identified as a current threat to the progress made in reducing infectious disease mortality?
The passage states, 'However, this progress is now threatened by the rise of antibiotic-resistant bacteria and and the emergence of new pathogens...'
The passage states, 'However, this progress is now threatened by the rise of antibiotic-resistant bacteria and and the emergence of new pathogens...'
The architectural style, characterized by its austere grandeur, dominated the urban landscape for several _______, leaving an indelible mark on the city's aesthetic.
The context implies a significant but not exceedingly long period, making 'decades' the most fitting choice for a distinct architectural style's dominance. 'Epochs,' 'centuries,' and 'eras' suggest much longer timeframes.
Despite technological advancements, some artisanal crafts have persevered for _______, their techniques passed down through generations with meticulous fidelity.
The phrase 'passed down through generations' suggests a long but not impossibly ancient lineage. 'Decades' accurately reflects a sustained period of craft preservation in the face of change. 'Millennia,' 'ages,' and 'eons' are far too long.
The political dissident remained an unyielding voice of dissent for _______, enduring persecution and exile yet never wavering in his commitment to democratic ideals.
The terms 'unyielding,' 'enduring persecution and exile,' and 'never wavering' strongly indicate a prolonged period of resistance, making 'decades' the only logical choice. The other options imply very short durations.
A 'decade' unequivocally refers to a period of exactly one hundred years.
A 'decade' specifically denotes a period of ten years, not one hundred. One hundred years is a 'century.'
The term 'decades' is often employed to convey a sense of substantial time, such as describing a significant portion of a person's life or a historical era.
The definition explicitly states that 'decades' are commonly used to describe long spans of time in history, personal life, or professional careers, aligning with the statement.
When referring to a 'decade,' one is primarily highlighting an abrupt and instantaneous event.
'Decade' refers to a continuous period of ten years, emphasizing duration rather than an abrupt, instantaneous event.
This sentence discusses how technological progress has changed society over several ten-year periods, fitting the C2 level by using advanced vocabulary and a somewhat complex sentence structure.
The sentence uses 'precipitous decline' and 'ensuing decades' which are advanced vocabulary and phrasing, suitable for a C2 learner demonstrating nuanced understanding of temporal concepts.
This sentence requires understanding of advanced vocabulary like 'unwavering', 'spanned', and 'relentless advocacy' within a chronologically descriptive context, appropriate for C2.
/ 36 correct
Perfect score!
