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A2 noun #1,500 最常用 8分钟阅读

cadeia

前1,500

At the A1 level, learners are introduced to the most basic and concrete meanings of the word 'cadeia'. For beginners, the primary focus is on understanding 'cadeia' as a place where criminals are sent, translating simply to 'jail' or 'prison'. In simple sentences, a student might learn to say 'Ele está na cadeia' (He is in jail). This is a highly practical word for understanding basic narratives, simple news headlines, or everyday conversations about right and wrong. At this stage, the grammatical focus is on associating the word with the correct feminine article 'a' and basic prepositions like 'em' (na) or 'para' (para a). The concept of a physical chain might also be briefly mentioned, though teachers usually clarify early on that 'corrente' is better for a metal chain. The goal at A1 is simply recognition and basic production in the context of law and order. Students do not need to worry about the abstract or scientific uses of the word yet. They just need to know that if someone does something very bad, they might go to 'cadeia'. This foundational understanding paves the way for the more complex, metaphorical uses that will be introduced in later stages of their language learning journey.

At the A2 level, the understanding of 'cadeia' expands significantly beyond just 'jail'. This is the level where students are introduced to the word's use in describing sequences and networks, which is crucial for broadening their vocabulary. The most important new concept at this stage is the 'cadeia alimentar' (food chain). As A2 learners begin to talk about nature, animals, and the environment, knowing how to express 'food chain' becomes essential. They learn sentences like 'O leão é o rei da cadeia alimentar' (The lion is the king of the food chain). Additionally, students learn to use 'cadeia' in commercial contexts, such as 'cadeia de lojas' (chain of stores) or 'cadeia de supermercados' (supermarket chain). This allows them to describe their shopping habits and the towns they live in more accurately. The grammar focus shifts to using 'cadeia de' followed by a plural noun. While they still practice using 'cadeia' to mean prison, the introduction of these new, linked meanings helps them realize that Portuguese words often have multiple, context-dependent translations. This realization is a key milestone in A2, moving them away from direct, one-to-one word translations.

At the B1 level, learners are expected to handle more abstract and varied uses of 'cadeia'. The vocabulary becomes more sophisticated, integrating into discussions about geography, business, and current events. Students learn the term 'cadeia de montanhas' (mountain range), which is useful for describing landscapes and travel destinations. In the realm of business and economics, which are common B1 topics, the phrase 'cadeia de abastecimento' or 'cadeia de suprimentos' (supply chain) is introduced. This is particularly relevant for discussing global news, trade, and logistics. At this intermediate stage, learners also start to encounter idiomatic expressions like 'reação em cadeia' (chain reaction), used to describe how one event leads to another. The ability to use 'cadeia' metaphorically demonstrates a growing comfort with the language. Furthermore, B1 students should be able to clearly distinguish between 'cadeia' (prison) and 'prisão' (the formal act of arrest or the institution), knowing when to use the colloquial term versus the formal one. They practice writing short essays or giving presentations where these terms are used accurately in context, showing a solid grasp of polysemy in Portuguese.

At the B2 level, the use of 'cadeia' becomes highly nuanced and integrated into complex sentence structures. Learners at this stage are dealing with advanced texts, opinion pieces, and detailed discussions. They use 'cadeia' in abstract concepts such as 'cadeia de comando' (chain of command) in corporate or military contexts, and 'cadeia de eventos' (chain of events) when analyzing historical or fictional narratives. The focus is on precision and register. A B2 student knows that while 'ir para a cadeia' is fine for a casual chat, a formal essay on the justice system should employ terms like 'sistema prisional' or 'encarceramento', though 'cadeia' might still appear in quotes or stylistic variations. They also explore scientific uses more deeply, such as 'cadeia de DNA' (DNA chain) or 'cadeia carbônica' (carbon chain) in chemistry, reflecting a broader academic vocabulary. At this level, mistakes involving false friends (like using 'cadeia' for a bicycle chain) should be completely eliminated. The student's speech and writing reflect a native-like understanding of how 'cadeia' functions as a linker of concepts, people, and events, demonstrating a high degree of linguistic flexibility and cultural awareness.

At the C1 level, learners possess an advanced, near-native command of the word 'cadeia' and its myriad applications. They effortlessly navigate between its literal, metaphorical, and highly specialized meanings. At this stage, vocabulary acquisition focuses on rare idioms, technical jargon, and literary uses. A C1 student might discuss the 'cadeia de custódia' (chain of custody) in a legal debate, or analyze the 'cadeia produtiva' (production chain) in an economic thesis. They understand the subtle emotional connotations of the word when used in literature to symbolize oppression or unbreakable bonds, even though 'correntes' is more common for physical bonds. They can read classic Portuguese literature and understand archaic uses of the word without confusion. Furthermore, they are adept at using 'cadeia' in complex rhetorical structures, such as describing a 'cadeia ininterrupta de infortúnios' (an unbroken chain of misfortunes). The distinction between synonyms like cadeia, prisão, cárcere, and penitenciária is perfectly clear, and they can select the exact word needed to strike the right tone—whether cynical, formal, academic, or poetic. Mastery at C1 means 'cadeia' is no longer just a vocabulary word, but a versatile tool for sophisticated expression.

At the C2 level, the mastery of 'cadeia' is absolute, reflecting a deep, intuitive understanding of the Portuguese language's historical and cultural fabric. A C2 speaker uses the word with the same effortless precision as a highly educated native speaker. They are aware of the etymological roots of the word (from Latin 'catena') and how it has evolved across different Portuguese-speaking regions. They can engage in philosophical or sociological discourse regarding the 'cadeia' as an institution, discussing penal reform using highly specialized terminology. In literary analysis, they can dissect how authors use 'cadeia' metaphorically to represent societal constraints or determinism. They are also completely comfortable with regional slang or colloquialisms that incorporate the word, understanding the socio-economic implications of phrases used in different dialects of Portugal, Brazil, or Lusophone Africa. At this pinnacle of language proficiency, the learner manipulates the word 'cadeia' not just to convey information, but to evoke specific imagery, establish a precise academic register, or play with linguistic nuances in creative writing and high-level debate.

开始练习例句笔记与提示

cadeia 30秒了解

Means a sequence or network.
Commonly translates to 'food chain'.
Everyday word for 'jail' or 'prison'.
Used for 'chain of stores'.

The Portuguese word 'cadeia' is a highly versatile noun that carries multiple meanings depending on the context in which it is used. Primarily, it translates to 'chain' in English, but its applications extend far beyond a simple metal object. In fact, when referring to a physical metal chain, Portuguese speakers often prefer the word 'corrente'. Therefore, understanding 'cadeia' requires a deep dive into its metaphorical, biological, and institutional uses. One of the most common uses of 'cadeia' is in the context of biology and ecology, specifically referring to the food chain, known in Portuguese as 'cadeia alimentar'. This concept is fundamental to understanding how energy flows through an ecosystem.

Biological Context: In biology, it represents the sequence of transfers of matter and energy in the form of food from organism to organism.

A cadeia alimentar é vital para a natureza.

Another frequent use of the word is to mean 'prison' or 'jail'. When someone commits a crime, they might be sent to 'cadeia'. This is a more colloquial or common way of saying 'prisão'.

Legal Context: Refers to a facility where inmates are forcibly confined and denied a variety of freedoms under the authority of the state.

O ladrão foi para a cadeia ontem.

Furthermore, 'cadeia' can refer to a sequence or series of connected things. For example, a 'cadeia de montanhas' means a mountain range, and a 'cadeia de lojas' refers to a chain of stores.

Commercial Context: A group of retail outlets owned by one company and spreading across various locations.

Eles abriram uma nova cadeia de supermercados.

A cadeia de montanhas é linda.

Houve uma cadeia de eventos infelizes.

To fully grasp this word, learners must practice identifying the surrounding vocabulary. If the context involves animals, it is likely the food chain. If it involves police, it is a prison. If it involves commerce, it is a store chain. This polysemy makes 'cadeia' a rich and essential word for any Portuguese learner aiming for fluency.

Using the word 'cadeia' correctly requires an understanding of its gender, pluralization, and the prepositions that typically accompany it. 'Cadeia' is a feminine noun, which means it must be preceded by feminine articles such as 'a' (the) or 'uma' (a/an). The plural form is 'cadeias', formed simply by adding an 's' to the end of the word. When constructing sentences, the choice of preposition is crucial. For instance, when saying someone went to prison, you use the preposition 'para' combined with the definite article 'a', resulting in 'para a cadeia'.

Grammar Rule 1: Always use feminine articles and adjectives with 'cadeia'. For example, 'a cadeia nova' (the new chain/prison).

Ele foi levado para a cadeia ontem à noite.

When 'cadeia' is used to describe a sequence or a network, it is often followed by the preposition 'de' (of). This creates compound expressions that function as a single conceptual unit. Examples include 'cadeia de lojas' (chain of stores), 'cadeia de montanhas' (mountain range), and 'cadeia de abastecimento' (supply chain).

Grammar Rule 2: Use 'cadeia de' followed by a plural noun to indicate a network or series of items.

A cadeia de fast-food abriu mais restaurantes.

In scientific contexts, adjectives are often used instead of 'de + noun'. The most prominent example is 'cadeia alimentar' (food chain), where 'alimentar' is an adjective modifying 'cadeia'.

Grammar Rule 3: Adjectives follow the noun 'cadeia' to specify its type, agreeing in gender and number.

O leão está no topo da cadeia alimentar.

Eles estudaram a cadeia de DNA no laboratório.

Foi uma cadeia de erros terríveis.

Mastering these structures—whether using 'para a cadeia' for prison, 'cadeia de' for networks, or 'cadeia + adjective' for scientific terms—will significantly enhance your fluency and ensure you sound natural when speaking Portuguese.

The word 'cadeia' is ubiquitous in Portuguese-speaking environments, appearing across a wide spectrum of daily life, media, and specialized fields. You will frequently encounter it in news broadcasts, particularly in segments covering crime and justice. Reporters often state that a suspect has been sent to 'cadeia' or is awaiting trial in 'cadeia'. This usage is so common that it forms a core part of the vocabulary needed to understand local news.

News Media: Used daily in journalism to report on arrests, criminal sentences, and the penal system.

O noticiário informou que ele fugiu da cadeia.

Beyond the news, 'cadeia' is a staple in educational settings. In biology classes, students learn about the 'cadeia alimentar' from a very young age. Documentaries about nature and wildlife frequently use this term to explain ecological balance and predator-prey relationships.

Education and Science: A fundamental term in biology textbooks and environmental discussions.

O professor explicou a cadeia alimentar marinha.

In the business world, 'cadeia' is equally important. Economic reports, business news, and corporate meetings frequently discuss the 'cadeia de abastecimento' (supply chain) or the expansion of a 'cadeia de lojas' (retail chain).

Business and Economy: Crucial for discussing logistics, retail networks, and corporate structures.

A pandemia afetou a cadeia de suprimentos global.

Eles compraram uma cadeia de hotéis de luxo.

A cadeia de rádio transmitiu o discurso ao vivo.

From the harsh reality of the justice system to the intricate webs of nature and global commerce, 'cadeia' is a word that connects various aspects of human experience and knowledge in the Portuguese language.

When learning the word 'cadeia', students frequently encounter a few specific pitfalls, mostly related to false friends and contextual misuse. The most prominent mistake is using 'cadeia' to refer to a physical metal chain used to lock a bicycle or tie a dog. While 'cadeia' historically and technically can mean a metal chain, in modern everyday Portuguese, the word 'corrente' is almost exclusively used for this physical object. Using 'cadeia' in this context sounds unnatural and archaic.

Physical Chain Error: Using 'cadeia' instead of 'corrente' for a metal chain used for securing objects.

Ele prendeu a bicicleta com uma cadeia. (Incorrect - use corrente)

Another common mistake involves the translation of 'prison'. While 'cadeia' is perfectly acceptable and widely used, learners sometimes confuse it with 'prisão' in formal writing. In highly formal or legal documents, 'prisão' or 'penitenciária' is preferred. 'Cadeia' is slightly more colloquial, akin to saying 'jail' rather than 'correctional facility'.

Register Error: Using 'cadeia' in formal legal documents where 'prisão' or 'estabelecimento prisional' would be more appropriate.

O juiz assinou o mandado de cadeia. (Incorrect - use prisão)

Additionally, learners sometimes attempt to directly translate English idioms containing the word 'chain' using 'cadeia', which doesn't always work. For example, 'chain reaction' translates perfectly to 'reação em cadeia'. However, 'chain smoker' does not translate to 'fumante de cadeia'; instead, Portuguese uses 'fumante inveterado'.

Idiom Translation Error: Assuming all English idioms with 'chain' use 'cadeia' in Portuguese.

Isso causou uma reação em cadeia. (Correct usage)

Ele é um fumante de cadeia. (Incorrect usage)

A cadeia de custódia foi mantida. (Correct legal usage)

By avoiding these common mistakes—differentiating between 'cadeia' and 'corrente', understanding the register of 'prisão' versus 'cadeia', and being careful with idioms—you will significantly improve the accuracy of your Portuguese.

To fully master the vocabulary surrounding 'cadeia', it is essential to understand its synonyms and related terms, and how they differ in nuance and application. The most direct synonym for 'cadeia' when it means 'prison' is 'prisão'. While 'cadeia' is often used in everyday speech to refer to the physical building or the concept of being locked up, 'prisão' is slightly more formal and is the preferred term in legal contexts.

Prisão: A more formal synonym for prison or the act of arrest.

A cadeia estava superlotada. (Colloquial)

Another related word is 'cárcere', which is a highly formal or literary term for prison. You will often see it in legal phrases like 'cárcere privado' (false imprisonment or kidnapping). It is rarely used in daily conversation to simply mean 'jail'.

Cárcere: A literary or legal term for captivity or prison.

Ele foi mantido em cárcere privado.

When 'cadeia' means a sequence or network, similar words include 'rede' (network) and 'série' (series). A 'cadeia de lojas' can sometimes be referred to as a 'rede de lojas'. However, 'cadeia' implies a more linear or strictly linked connection, whereas 'rede' implies a widespread, interconnected web.

Rede vs Cadeia: 'Rede' means network (like the internet or a web), while 'cadeia' implies a chain of links.

Eles gerenciam uma grande rede de contatos.

A série de eventos foi trágica.

A corrente do cachorro quebrou.

Finally, as mentioned before, 'corrente' is the word for a physical metal chain. Understanding these distinctions—prisão for formal jail, cárcere for legal captivity, rede for network, and corrente for metal links—will ensure you use 'cadeia' with precision and confidence.

How Formal Is It?

正式

非正式

难度评级

需要掌握的语法

按水平分级的例句

O ladrão está na cadeia.

The thief is in jail.

Uses 'na' (em + a) to indicate location inside the feminine noun 'cadeia'.

Ele foi para a cadeia.

He went to jail.

Uses 'para a' to indicate direction towards the jail.

A cadeia é muito grande.

The jail is very big.

Demonstrates 'cadeia' as a feminine subject with the adjective 'grande'.

Eu não quero ir para a cadeia.

I don't want to go to jail.

Basic negative sentence structure with the infinitive 'ir'.

A polícia levou o homem para a cadeia.

The police took the man to jail.

Uses the verb 'levar' (to take) with the destination 'para a cadeia'.

A cadeia fica na cidade.

The jail is in the city.

Uses 'fica' (is located) to describe the position of the jail.

Eles estão na cadeia agora.

They are in jail now.

Plural subject 'Eles' with the verb 'estão'.

A porta da cadeia está fechada.

The jail door is closed.

Uses 'da' (de + a) to show possession: the door of the jail.

A cadeia alimentar é importante para a natureza.

The food chain is important for nature.

Introduces the adjective 'alimentar' to modify 'cadeia'.

Existe uma cadeia de lojas no shopping.

There is a chain of stores in the mall.

Uses 'cadeia de' followed by the plural noun 'lojas'.

O leão está no topo da cadeia alimentar.

The lion is at the top of the food chain.

Uses 'da' (de + a) to mean 'of the' food chain.

Eles abriram uma nova cadeia de fast-food.

They opened a new fast-food chain.

Uses 'uma nova' (a new) before 'cadeia'.

A cadeia de montanhas é muito alta.

The mountain range is very high.

Introduces 'cadeia de montanhas' for mountain range.

O criminoso fugiu da cadeia ontem.

The criminal escaped from jail yesterday.

Uses 'da' (de + a) to indicate movement away from the jail.

Nós estudamos a cadeia alimentar na escola.

We studied the food chain at school.

Past tense verb 'estudamos' with 'a cadeia alimentar' as the direct object.

Esta é a maior cadeia de supermercados do país.

This is the biggest supermarket chain in the country.

Uses the superlative 'a maior' (the biggest).

A cadeia de abastecimento foi interrompida pela greve.

The supply chain was interrupted by the strike.

Introduces 'cadeia de abastecimento' (supply chain) in a passive voice structure.

O acidente causou uma reação em cadeia na rodovia.

The accident caused a chain reaction on the highway.

Uses the idiomatic expression 'reação em cadeia'.

Atravessamos a cadeia de montanhas durante a viagem.

We crossed the mountain range during the trip.

Uses the verb 'atravessar' (to cross) with the mountain range.

A empresa controla toda a cadeia produtiva do café.

The company controls the entire coffee production chain.

Introduces 'cadeia produtiva' (production chain).

Ele passou dez anos na cadeia por um crime que não cometeu.

He spent ten years in prison for a crime he didn't commit.

Uses 'passar tempo na cadeia' (to spend time in prison).

A nova lei visa melhorar as condições na cadeia.

The new law aims to improve conditions in the jail.

Discusses abstract concepts like 'condições' (conditions) related to the jail.

Eles formaram uma cadeia humana para salvar o banhista.

They formed a human chain to save the swimmer.

Introduces 'cadeia humana' (human chain).

A cadeia de rádio transmitiu a notícia para todo o país.

The radio network broadcast the news to the whole country.

Uses 'cadeia de rádio' to mean a broadcasting network.

A quebra na cadeia de suprimentos global afetou a economia.

The break in the global supply chain affected the economy.

Uses complex noun phrases like 'quebra na cadeia de suprimentos global'.

É fundamental respeitar a cadeia de comando na corporação.

It is fundamental to respect the chain of command in the corporation.

Introduces 'cadeia de comando' (chain of command).

Uma cadeia de eventos infelizes levou à falência da empresa.

A chain of unfortunate events led to the company's bankruptcy.

Uses 'cadeia de eventos' to describe a sequence of occurrences.

Os cientistas estão estudando a cadeia de DNA do vírus.

Scientists are studying the virus's DNA chain.

Applies 'cadeia' to scientific terminology (DNA chain).

O sistema de justiça precisa reformar a cadeia pública.

The justice system needs to reform the public jail.

Uses 'cadeia pública' as a specific legal/administrative term.

A poluição afeta todos os níveis da cadeia trófica.

Pollution affects all levels of the trophic chain.

Introduces 'cadeia trófica', a more advanced synonym for food chain.

A polícia investiga a cadeia de corrupção no governo.

The police are investigating the chain of corruption in the government.

Uses 'cadeia' metaphorically to describe a network of illegal activities.

A expansão da cadeia hoteleira gerou centenas de empregos.

The expansion of the hotel chain generated hundreds of jobs.

Uses the adjective 'hoteleira' to modify 'cadeia'.

A preservação da cadeia de custódia é vital para a validade das provas.

The preservation of the chain of custody is vital for the validity of the evidence.

Uses highly specific legal jargon: 'cadeia de custódia'.

A literatura frequentemente usa a cadeia como metáfora para a opressão social.

Literature frequently uses the prison as a metaphor for social oppression.

Discusses the word 'cadeia' itself in a literary and metaphorical context.

A disrupção na cadeia de valor exigiu uma reestruturação completa.

The disruption in the value chain required a complete restructuring.

Uses advanced business terminology: 'cadeia de valor'.

Observou-se uma cadeia ininterrupta de infortúnios na vida do protagonista.

An unbroken chain of misfortunes was observed in the protagonist's life.

Uses sophisticated vocabulary ('ininterrupta', 'infortúnios') with 'cadeia'.

As cadeias carbônicas são a base da química orgânica.

Carbon chains are the basis of organic chemistry.

Uses 'cadeias carbônicas', a specific term in advanced chemistry.

O réu foi condenado a cumprir pena em cadeia de segurança máxima.

The defendant was sentenced to serve time in a maximum-security prison.

Uses the full legal phrase 'cadeia de segurança máxima'.

A falha no servidor desencadeou uma reação em cadeia catastrófica.

The server failure triggered a catastrophic chain reaction.

Combines 'desencadear' (to unchain/trigger) with 'reação em cadeia'.

A complexidade da cadeia logística internacional é um desafio formidável.

The complexity of the international logistics chain is a formidable challenge.

Uses advanced adjectives ('logística', 'internacional') to modify 'cadeia'.

A obra explora as cadeias invisíveis do determinismo social que aprisionam o indivíduo.

The work explores the invisible chains of social determinism that imprison the individual.

Highly literary and philosophical use of 'cadeias' as invisible constraints.

O conceito de cadeia de significantes é central na psicanálise lacaniana.

The concept of the chain of signifiers is central to Lacanian psychoanalysis.

Uses 'cadeia de significantes', a highly specialized academic term.

A desintegração da cadeia de comando culminou em um motim generalizado.

The disintegration of the chain of command culminated in a widespread mutiny.

Advanced syntax and vocabulary ('desintegração', 'culminou', 'motim').

Historicamente, a transição da cadeia de grilhões para o encarceramento moderno reflete mudanças punitivas.

Historically, the transition from the chain of shackles to modern incarceration reflects punitive changes.

Contrasts the literal historical meaning (grilhões) with the modern institutional meaning.

A intrincada cadeia de montanhas serviu como um bastião natural contra as invasões.

The intricate mountain range served as a natural bastion against invasions.

Uses poetic and historical language ('intrincada', 'bastião natural').

A falência do banco provocou uma perniciosa reação em cadeia no mercado financeiro.

The bank's bankruptcy provoked a pernicious chain reaction in the financial market.

Uses the strong adjective 'perniciosa' to describe the chain reaction.

O autor tece uma cadeia narrativa tão complexa que desafia a linearidade temporal.

The author weaves a narrative chain so complex that it defies temporal linearity.

Uses 'cadeia narrativa' in the context of advanced literary criticism.

A elucidação da cadeia epidemiológica foi crucial para conter o surto.

The elucidation of the epidemiological chain was crucial to containing the outbreak.

Uses highly specialized medical terminology ('cadeia epidemiológica').

常见搭配

cadeia alimentar

ir para a cadeia

cadeia de lojas

cadeia de montanhas

reação em cadeia

cadeia de abastecimento

cadeia de comando

cadeia produtiva

sair da cadeia

cadeia de custódia

常用短语

estar na cadeia

mandar para a cadeia

fugir da cadeia

cadeia de fast-food

cadeia de supermercados

cadeia de eventos

cadeia de rádio

topo da cadeia

cadeia de suprimentos

cadeia de hotéis

容易混淆的词

cadeia vs corrente

cadeia vs prisão

cadeia vs rede

习语与表达

容易混淆

cadeia vs

句型

如何使用

nuances

While 'prisão' focuses on the state of being arrested, 'cadeia' often evokes the physical building or the harsh reality of being locked up.

regional variations

Universally understood across all Portuguese-speaking regions with the same primary meanings.

literal vs figurative

Literally meant a physical chain historically, but now 'corrente' is used for that. 'Cadeia' is now used literally for prison, and figuratively for sequences.

常见错误

Using 'cadeia' to mean a physical metal chain (use 'corrente' instead).
Using masculine articles with 'cadeia' (it is feminine: 'a cadeia').
Translating 'food chain' literally as 'cadeia de comida' (correct is 'cadeia alimentar').
Using 'cadeia' in highly formal legal writing instead of 'prisão' or 'penitenciária'.
Translating English idioms directly, like 'chain smoker' to 'fumante de cadeia' (incorrect).

小贴士

Context is Everything

Always look at the surrounding words when you see cadeia. If it is near words like animais or comer, it means food chain. If it is near polícia or crime, it means prison. Paying attention to these clues will help you translate accurately. Practice reading different texts to get used to these variations.

Feminine Agreement

Never forget that cadeia is feminine. It is always 'a cadeia', never 'o cadeia'. This means any adjectives you use with it must end in 'a' if they vary by gender. For example, say 'cadeia lotada' (crowded jail), not 'cadeia lotado'. This is a simple rule but easy to forget.

Avoid the Metal Chain Mistake

The most common mistake English speakers make is using cadeia for a physical metal chain. Erase this from your mind. If you are locking a bike, tying a dog, or wearing jewelry, the word is 'corrente'. Only use cadeia for abstract chains or prison.

Mastering 'Cadeia de'

If you are learning Portuguese for business, memorize the structure 'cadeia de + plural noun'. This is how you describe corporate networks. Practice saying 'cadeia de lojas', 'cadeia de hotéis', and 'cadeia de suprimentos'. This will make you sound very professional in meetings.

Nail the Diphthong

Focus on the 'ei' sound in the middle of ca-dei-a. It should be a smooth glide, like the 'ay' in 'play'. Don't separate it into two distinct syllables like ca-de-i-a. Listen to native speakers say the word and try to mimic that smooth middle sound.

Learn 'Reação em Cadeia'

Add 'reação em cadeia' to your vocabulary list immediately. It means 'chain reaction' and is used exactly like it is in English. It's a great phrase to use when telling a story about how one bad thing led to another. It instantly elevates your speaking level.

Prisão vs Cadeia

When writing a formal text, such as an essay or a professional email, opt for 'prisão' instead of 'cadeia' when referring to jail. Cadeia is perfectly fine for speaking, but prisão looks much better on paper. Knowing when to switch registers is a sign of advanced fluency.

The Adjective 'Alimentar'

Remember that 'food chain' uses an adjective in Portuguese, not a noun. It is 'cadeia alimentar', not 'cadeia de comida'. 'Alimentar' means 'related to food or feeding'. This is a specific scientific term that you should memorize as a single unit.

Watch the News

To get comfortable hearing the word cadeia in its 'prison' context, watch local Portuguese or Brazilian news. Crime reports use this word constantly. You will quickly learn the verbs associated with it, like 'ir para', 'sair da', and 'fugir da'.

Mountain Ranges

Don't forget the geographical use of the word. A mountain range is a 'cadeia de montanhas'. This is very useful if you are traveling or talking about the landscape of countries like Brazil or Portugal. It paints a clear picture of linked mountains.

记住它

记忆技巧

Imagine a CHAIN of animals eating each other inside a JAIL cell. This links 'food chain' and 'jail', the two main meanings of CADEIA.

词源

Latin

文化背景

Similar to Portugal and Brazil, 'cadeia' is used for both prison and sequences.

In Brazil, 'cadeia' is the most common colloquial word for jail. Slang terms like 'xadrez' (chess, referring to the bars) are also used.

In Portugal, 'cadeia' is also widely used for prison, alongside 'prisão'. 'Cadeia de supermercados' is very common in business news.

在生活中练习

真实语境

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"Você acha que a cadeia resolve o problema da criminalidade?"

"Qual é o animal no topo da cadeia alimentar?"

"Você costuma comprar em cadeias de fast-food?"

"Como a pandemia afetou a cadeia de suprimentos no seu trabalho?"

"Qual é a maior cadeia de montanhas do mundo?"

日记主题

Escreva sobre a importância da cadeia alimentar para o meio ambiente.

Descreva uma cadeia de eventos que mudou a sua vida.

Qual é a sua opinião sobre o sistema de cadeia (prisão) no seu país?

Se você pudesse abrir uma cadeia de lojas, o que você venderia?

Explique a diferença entre cadeia, prisão e corrente.

常见问题

10 个问题

The word cadeia has multiple meanings in Portuguese. Primarily, it refers to a chain of connected items. In biology, it is used to describe the food chain. Additionally, it is a common colloquial term for a prison or jail. You will also hear it used for a chain of stores or a mountain range. Understanding the context is key to knowing which meaning is intended.

No, you should not use cadeia for a bicycle chain. In modern Portuguese, the word for a physical metal chain used to secure things is 'corrente'. Using cadeia in this context sounds unnatural to native speakers. Always use corrente for bikes, dogs, or gates. Save cadeia for abstract chains or prison.

Both words mean prison or jail, but they differ slightly in register. Cadeia is more colloquial and is frequently used in everyday conversation. Prisão is slightly more formal and is the preferred term in legal documents or formal news reports. However, in casual speech, they are often used interchangeably. Prisão can also mean the act of arresting someone, whereas cadeia usually refers to the place.

The exact translation for 'food chain' is 'cadeia alimentar'. This is a very common term learned early in school. The word alimentar acts as an adjective modifying the noun cadeia. You will hear this frequently in nature documentaries and biology classes. It is a perfect example of how cadeia is used for scientific sequences.

Cadeia is a feminine noun. Therefore, it must be accompanied by feminine articles and adjectives. You should say 'a cadeia' (the jail) or 'uma cadeia' (a jail). If you are describing it, the adjective must also be feminine, such as 'a cadeia nova' (the new jail). This rule applies regardless of which meaning of the word you are using.

To say 'chain of stores', you use the phrase 'cadeia de lojas'. The preposition 'de' links the word cadeia to the plural noun lojas. This structure is used for many business and geographical terms. For example, you can also say 'cadeia de supermercados' (supermarket chain) or 'cadeia de hotéis' (hotel chain).

The phrase 'reação em cadeia' translates directly to 'chain reaction'. It is an idiomatic expression used to describe a situation where one event causes a series of other events to happen. It is used in both scientific contexts, like chemistry or physics, and in everyday situations to describe a sequence of consequences. It is a very useful phrase for intermediate and advanced learners.

The pronunciation is roughly ka-DAY-a. The stress falls on the middle syllable, 'dei'. The 'ei' forms a diphthong, sounding similar to the 'ay' in the English word 'day'. The final 'a' is short and open. Practicing this pronunciation will help you sound much more natural when speaking Portuguese.

Yes, the word cadeia is universally understood and used in both Brazil and Portugal, as well as other Portuguese-speaking countries. The meanings remain the same across these regions. Whether you are in Lisbon or São Paulo, people will understand 'cadeia alimentar' as food chain and 'ir para a cadeia' as going to jail. It is a core vocabulary word.

To say 'in jail', you use the preposition 'em' combined with the feminine article 'a', which forms 'na'. Therefore, 'in jail' is 'na cadeia'. If you want to say someone went 'to jail', you use 'para a cadeia'. Getting these prepositions right is crucial for speaking grammatically correct Portuguese.