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B1 noun 9 دقیقه مطالعه

castor

تمرین کن مثال‌ها نکات و راهنمایی‌ها castor در ۳۰ ثانیه

توضیح castor in your Level:

At the A1 level, you just need to know that 'o castor' is an animal. It is a large rodent that lives in the water and on land. You should learn that it is brown ('marrom' or 'castanho') and that it has big teeth. At this stage, you might use it in simple sentences like 'O castor é um animal' or 'Eu vejo o castor'. Focus on the basic pronunciation: cas-TOR. It is a masculine noun, so we always use 'o' with it. You might see pictures of a castor in a basic vocabulary book about animals. Don't worry about the complex things they build yet; just remember the name and that they like water and wood.

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At the A2 level, you can start describing what the castor does. You should learn the verb 'construir' (to build) and the word 'rio' (river). A typical A2 sentence would be: 'O castor constrói uma casa no rio'. You can also describe its appearance more specifically, using words like 'cauda' (tail) and 'dentes' (teeth). You should know the plural form 'castores'. At this level, you might encounter the castor in simple stories or children's cartoons. You can also start to compare it to other animals you know, like the 'rato' (mouse) or 'esquilo' (squirrel), noting that the castor is much bigger.

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At the B1 level, you should understand the castor's role as an 'engenheiro da natureza' (nature's engineer). You should be able to talk about 'barragens' (dams) and how they affect the environment. You can use the word in more complex sentences with conjunctions, such as: 'Os castores são importantes porque as suas barragens ajudam a criar novos ecossistemas'. You should also be aware of the common confusion between 'castor' and 'lontra' (otter) and be able to explain the difference in basic terms. This is the level where you might read a short article about environment conservation and see the word 'castor' mentioned as a key species.

At the B2 level, you can discuss the historical and ecological significance of the castor. You might talk about the 'comércio de peles' (fur trade) and how it led to the decline of castor populations in the past. You should be comfortable using technical terms like 'espécie nativa' (native species) or 'reintrodução' (reintroduction). You can participate in a debate about whether castores should be brought back to certain areas, using arguments about 'biodiversidade' and 'gestão de recursos hídricos'. Your vocabulary should include specific verbs like 'roer' (to gnaw) and 'derrubar' (to fell trees), used in nuanced descriptions of their behavior.

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At the C1 level, you understand the nuances of the word 'castor' in various registers. You can read scientific papers in Portuguese about the 'impacto hidrológico das barragens de castores'. You are aware of the linguistic origins of the word and its relation to other languages. You can use 'castor' metaphorically in literature or high-level journalism. You also know the difference between the animal 'castor' and the plant 'rícino' (castor oil plant) and would never make the mistake of confusing them in a professional context. You can explain the complex social structure of a castor colony ('colónia') using sophisticated grammatical structures.

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At the C2 level, your mastery of the word 'castor' is equivalent to a highly educated native speaker. You can appreciate the word's use in classical literature or archaic texts. You can discuss the etymological journey from the Latin 'castor' and its Greek roots. You are capable of translating complex English texts about beavers into natural, idiomatic Portuguese, choosing the perfect synonyms and related terms (like 'sarapantão' or specific regional names if they exist). You can write an essay on the symbolic representation of the castor in different cultures, all while maintaining perfect control over Portuguese syntax and specialized biological terminology.

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تمرین کن مثال‌ها نکات و راهنمایی‌ها

castor در ۳۰ ثانیه

Castor is the Portuguese word for beaver, a large semi-aquatic rodent.
It is a masculine noun: o castor (singular), os castores (plural).
Famous for building 'barragens' (dams) and having a 'cauda chata' (flat tail).
Do not confuse with 'lontra' (otter) or use it for 'castor oil' (rícino).

The Portuguese word castor refers to the beaver, a semi-aquatic rodent known globally for its architectural prowess. In the Portuguese-speaking world, particularly in Portugal, the term is used in biological, environmental, and educational contexts. While beavers are not native to Brazil (where the capybara holds the title of the largest rodent), the word remains essential for literature, nature documentaries, and discussions about global ecology. The word evokes images of industry, persistence, and environmental engineering. When someone uses the word castor, they are usually discussing the animal's physical characteristics, such as its waterproof fur, webbed feet, and its signature flat tail, or its behavior in building complex dams and lodges.

Taxonomy: The animal belongs to the genus Castor, encompassing the North American beaver and the Eurasian beaver.
Symbolism: Often represents hard work and ingenuity, as seen in the phrase 'trabalhar como um castor' (to work like a beaver).

O castor é conhecido por construir diques impressionantes nos rios.

Beyond the animal itself, the word can appear in specific technical contexts. For instance, in the textile industry, 'pelo de castor' (beaver fur) was historically a high-value commodity for hat-making. In a modern metaphorical sense, calling someone a 'castor' might imply they are constantly busy or building something significant. However, unlike some animal names that become common insults, 'castor' remains largely neutral or positive, associated with productivity. It is a masculine noun, preceded by 'o' (singular) or 'os' (plural). In European Portuguese, you might encounter it more frequently in school curricula discussing the fauna of the Northern Hemisphere.

Vimos um castor carregando um tronco para a sua toca.

Habitat: Rivers, lakes, and streams where they can manipulate water flow.

In a broader cultural context, the castor is a staple of children's literature translated into Portuguese. Characters like Mr. and Mrs. Beaver from 'The Chronicles of Narnia' (As Crónicas de Nárnia) have made the word familiar to generations of Portuguese speakers. Even if the animal isn't seen in the wild in Brazil or Angola, its reputation as nature's engineer is firmly established in the language. The word is also used in scientific discussions about biodiversity and the reintroduction of species in Europe. Because it is a B1 level word, learners should be comfortable using it in descriptive passages or when talking about the natural world and environment.

Using castor in a sentence requires an understanding of its role as a masculine noun and its common associations. Most sentences involving this word will focus on its habitat, its physical attributes, or its famous building habits. When describing the castor's actions, verbs like 'construir' (to build), 'roer' (to gnaw), 'nadar' (to swim), and 'mergulhar' (to dive) are frequently employed. Because the castor is an animal, it often serves as the subject of the sentence, performing actions that transform the landscape.

O castor usa os seus dentes fortes para derrubar árvores.

Grammatically, 'castor' follows standard Portuguese rules for masculine nouns ending in a consonant. To make it plural, you add '-es', resulting in 'castores'. It is important to note that the stress falls on the last syllable (cas-TOR), which is typical for Portuguese words ending in 'r'. When using adjectives with castor, they must agree in gender and number. For example, 'o castor pequeno' (the small beaver) or 'os castores trabalhadores' (the hardworking beavers). In biological descriptions, you might see it paired with 'europeu' or 'americano' to specify the species.

Action Phrases: 'O castor roeu o tronco' (The beaver gnawed the trunk).
Descriptive Phrases: 'A cauda do castor é larga e chata' (The beaver's tail is wide and flat).

In more advanced usage, 'castor' can appear in metaphorical contexts or as part of compound terms. Although 'óleo de rícino' is the common term for castor oil in Portuguese, some older texts might use 'óleo de castor' due to direct translation from English, though this is technically incorrect in modern Portuguese (as the oil comes from a plant, not the animal). Learners should stick to the animal definition. In a sentence about conservation, you might say: 'A proteção do habitat do castor é essencial para a biodiversidade local.' This demonstrates the word's utility in formal scientific or environmental discourse.

Durante a caminhada, encontramos uma barragem feita por um castor.

You are most likely to encounter the word castor in educational settings, media, and literature. In schools across Portugal and Brazil, students learn about different biomes and the animals that inhabit them. The castor is a classic example used to explain how animals can modify their environment. Nature documentaries, often dubbed into Portuguese from English (like those from National Geographic or BBC), frequently feature the castor. In these programs, the narrator will describe the 'habilidades de engenharia do castor' (the beaver's engineering skills).

No documentário de ontem, mostraram como o castor armazena comida para o inverno.

Another common place to hear the word is in stories for children. Many fables and modern cartoons feature beaver characters who are usually portrayed as industrious and organized. If you are watching a movie like 'Ice Age' or 'The Chronicles of Narnia' in Portuguese, you will hear the characters referring to each other as 'Senhor Castor'. In these contexts, the word is spoken with a friendly, familiar tone. In news reports concerning climate change and water management, the castor occasionally makes an appearance as a 'biological solution' to drought, as their dams help retain water in the soil.

Media Type: Nature Documentaries (Documentários de natureza)
Media Type: Children's Literature (Literatura infantil)

In a conversational setting, a Portuguese speaker might use 'castor' when making a comparison about someone's work ethic. While not as common as saying someone works like an ant ('trabalha como uma formiga'), the 'trabalho de castor' (beaver's work) is a recognized expression for something done with great detail and persistence. You might also hear it in museums of natural history or zoos. If you visit a zoo in Lisbon or São Paulo, the plaque in front of the enclosure (if they have them) will clearly display the word castor followed by its scientific name.

As crianças ficaram fascinadas ao ver o castor no jardim zoológico.

One of the most frequent mistakes English speakers make when learning Portuguese is assuming that 'castor oil' translates to 'óleo de castor'. In Portuguese, the plant-based oil used for medicinal and industrial purposes is called óleo de rícino. Using 'óleo de castor' sounds like you are extracting oil from the animal, which is both incorrect and slightly gruesome. Another common error is confusing the castor with other semi-aquatic mammals. The 'lontra' (otter) is the most common mix-up. Remember: castores build dams; lontras eat fish and are much more agile in the water.

Errado: Eu comprei óleo de castor para o cabelo.
Correto: Eu comprei óleo de rícino para o cabelo.

Pronunciation is another area where learners stumble. The 'r' at the end of castor must be pronounced. In Brazilian Portuguese, it might be a soft, aspirated 'h' sound (cas-toh) or a retroflex 'r' (cas-torr) depending on the region, but it shouldn't be silent like in some English dialects. Also, ensuring the correct gender is vital. 'A castor' is incorrect; it must always be 'o castor' for the species, or 'a fêmea do castor' if you specifically mean a female. Pluralization is often missed; remember that words ending in 'r' take '-es', not just '-s'. So, 'dois castors' is wrong; it must be 'dois castores'.

False Friend Warning: Castor (animal) vs. Rícino (oil plant). Do not mix them up!
Grammar Trap: Pluralizing as 'castors' instead of the correct 'castores'.

Finally, learners sometimes use 'castor' when they actually mean 'esquilo' (squirrel) or 'marmota' (marmot) because they are all rodents. While they are related, the castor's unique tail and aquatic lifestyle are its defining features. In a classroom or scientific setting, being precise with these names is important. If you are describing a dam, use 'barragem' or 'dique'. Avoid using 'casa' (house) when 'toca' or 'cabana' is more appropriate for a beaver's lodge. These small distinctions will make your Portuguese sound much more natural and expert.

While castor is the specific name for the beaver, there are several related words and alternatives depending on the context of your conversation. If you are speaking generally about rodents, you might use the term roedor. This is the biological category that includes castores, rats, and squirrels. In South America, specifically Brazil, the capivara is the most similar animal in terms of habitat and size, though it lacks the beaver's tail and dam-building instinct. Comparing the two is a great way to engage in a cultural conversation about wildlife.

Lontra: Often confused with the castor, but the 'lontra' (otter) is a carnivore and more streamlined.
Ariranha: The giant river otter of the Amazon, another semi-aquatic animal learners should know.

Diferente do castor, a capivara não constrói barragens nos rios.

If you are referring to the fur of the castor, you might use the word pelagem (coat/fur) or pelo. In the context of engineering, terms like arquiteto da natureza (nature's architect) are poetic synonyms used in documentaries. For the structures they build, 'barragem' is the most common word for the dam, while 'toca' or 'abrigo' refers to their lodge. In some literary translations, you might even see 'mestre-de-obras' (foreman) used humorously to describe a particularly active castor. Understanding these alternatives helps you describe the animal's life more vividly.

Finally, consider the word nutria (coypu), which is another semi-aquatic rodent often found in South America and Europe. It looks very similar to a beaver but has a round, rat-like tail. In Portuguese, it's also called 'ratão-do-banhado'. Knowing the difference between a castor, a lontra, and a nutria will significantly boost your descriptive vocabulary in Portuguese. When writing or speaking, choosing the specific animal name instead of just 'animal' or 'bicho' shows a higher level of language proficiency (B2/C1 level).

چقدر رسمی است؟

نکته جالب

The word is identical in spelling to the English word 'castor' (as in castor oil), but they refer to completely different things in modern usage (animal vs. plant).

راهنمای تلفظ

UK /kæstə/

US /ˈkæstər/

The stress is on the final syllable: cas-TOR.

هم‌قافیه با

amor dor valor senhor trabalhador flor calor cor

خطاهای رایج

Pronouncing it like the English 'caster' (stress on first syllable).
Making the 'r' silent.
Using an open 'a' sound like 'cat' instead of the Portuguese 'a'.

سطح دشواری

خواندن 2/5

Easy to recognize due to Latin roots and English similarity.

نوشتن 3/5

Requires remembering the plural 'castores' and the 'r' ending.

صحبت کردن 3/5

Stress on the last syllable is key.

گوش دادن 2/5

Clear pronunciation makes it easy to identify.

بعداً چه یاد بگیریم؟

پیش‌نیازها

animal rio madeira água grande

بعداً یاد بگیرید

barragem roedor lontra natureza ecossistema

پیشرفته

hidromorfologia biodiversidade espécie-chave incisivos castóreo

گرامر لازم

Plural of nouns ending in 'r'

castor -> castores, flor -> flores

Gender of animal names

o castor (masculine), a lontra (feminine)

Adjective agreement

o castor pequeno / os castores pequenos

Contractions with 'de'

da cauda (de + a), do castor (de + o)

Stress on final syllable

Words ending in 'r' like castor, amor, comer.

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مثال‌ها بر اساس سطح

O castor é marrom.

The beaver is brown.

Masculine noun + adjective agreement.

Eu gosto do castor.

I like the beaver.

Contraction 'de + o = do'.

O castor tem dentes grandes.

The beaver has big teeth.

Verb 'ter' in the third person singular.

O castor nada no rio.

The beaver swims in the river.

Present tense of 'nadar'.

Onde está o castor?

Where is the beaver?

Question word 'onde'.

O castor é um animal.

The beaver is an animal.

Basic 'is a' structure.

O castor come madeira.

The beaver eats wood.

Simple subject-verb-object.

Vemos um castor pequeno.

We see a small beaver.

Adjective follows the noun.

O castor constrói uma barragem.

The beaver builds a dam.

Introduction of specific vocabulary 'barragem'.

Os castores vivem na água e na terra.

Beavers live in water and on land.

Plural form 'castores'.

A cauda do castor é muito chata.

The beaver's tail is very flat.

Possessive 'do' (of the).

O castor roeu a árvore ontem.

The beaver gnawed the tree yesterday.

Past tense 'Pretérito Perfeito'.

Eles são castores trabalhadores.

They are hardworking beavers.

Plural adjective agreement.

O castor faz um ninho de ramos.

The beaver makes a nest of branches.

Verb 'fazer' (to make/do).

O castor mergulha rapidamente.

The beaver dives quickly.

Adverb 'rapidamente'.

Não toque no castor selvagem.

Don't touch the wild beaver.

Imperative negative.

O castor é considerado um engenheiro da natureza.

The beaver is considered a nature's engineer.

Passive voice 'é considerado'.

As barragens de castor ajudam a prevenir inundações.

Beaver dams help prevent floods.

Noun-noun relationship.

O castor usa a cauda para avisar do perigo.

The beaver uses its tail to warn of danger.

Infinitive 'avisar' after 'para'.

Muitas pessoas confundem o castor com a lontra.

Many people confuse the beaver with the otter.

Verb 'confundir' + 'com'.

O castor é um animal muito ativo durante a noite.

The beaver is a very active animal during the night.

Adverbial phrase of time.

Aprendemos sobre o habitat do castor na escola.

We learned about the beaver's habitat at school.

Preposition 'sobre' (about).

Se vires um castor, não te aproximes muito.

If you see a beaver, don't get too close.

Future Subjunctive 'vires'.

O castor consegue ficar debaixo de água por vários minutos.

The beaver can stay underwater for several minutes.

Verb 'conseguir' (to be able to).

A reintrodução do castor na Europa foi um sucesso ecológico.

The reintroduction of the beaver in Europe was an ecological success.

Complex noun phrases.

Os castores modificam a paisagem de forma significativa.

Beavers modify the landscape significantly.

Adverbial phrase 'de forma...'.

O pelo do castor era muito procurado para fazer chapéus.

Beaver fur was highly sought after to make hats.

Imperfect past 'era'.

O castor possui dentes que nunca param de crescer.

The beaver possesses teeth that never stop growing.

Relative clause with 'que'.

Apesar de serem roedores, os castores são excelentes nadadores.

Despite being rodents, beavers are excellent swimmers.

Conjunction 'Apesar de' + personal infinitive.

A barragem do castor criou um novo pântano na região.

The beaver's dam created a new swamp in the region.

Preterite tense for completed action.

É fascinante observar o castor a trabalhar nos seus diques.

It is fascinating to observe the beaver working on its dikes.

Gerund construction 'a trabalhar'.

O castor armazena ramos no fundo do lago para o inverno.

The beaver stores branches at the bottom of the lake for winter.

Prepositional phrase 'no fundo do'.

O castor desempenha um papel fulcral na regulação dos caudais dos rios.

The beaver plays a pivotal role in regulating river flows.

Sophisticated vocabulary 'fulcral', 'caudais'.

A exploração intensiva do castor quase levou à sua extinção.

Intensive exploitation of the beaver almost led to its extinction.

Abstract nouns as subjects.

As secreções do castor, chamadas castóreo, eram usadas na perfumaria.

Beaver secretions, called castoreum, were used in perfumery.

Apposition set off by commas.

A engenharia do castor promove a biodiversidade ao criar nichos ecológicos.

Beaver engineering promotes biodiversity by creating ecological niches.

Gerund 'ao criar' (by creating).

O castor é um exemplo clássico de uma espécie engenheira de ecossistemas.

The beaver is a classic example of an ecosystem engineer species.

Technical terminology.

A morfologia do castor está perfeitamente adaptada ao seu estilo de vida.

The beaver's morphology is perfectly adapted to its lifestyle.

Formal subject-predicate structure.

Observou-se um aumento na qualidade da água após o regresso do castor.

An increase in water quality was observed after the return of the beaver.

Passive with 'se'.

O castor, outrora perseguido, é agora um símbolo de conservação.

The beaver, once persecuted, is now a symbol of conservation.

Adverb 'outrora' (formerly).

A resiliência dos ecossistemas ribeirinhos é amiúde potenciada pela atividade do castor.

The resilience of riparian ecosystems is often enhanced by beaver activity.

High-level vocabulary 'amiúde', 'potenciada'.

Subsiste ainda o mito de que o castor utiliza a cauda como uma trolha.

The myth still persists that the beaver uses its tail like a trowel.

Verb 'subsistir' (to persist) and 'trolha' (trowel).

A intricada arquitetura das lojas de castor desafia a compreensão simplista da inteligência animal.

The intricate architecture of beaver lodges challenges a simplistic understanding of animal intelligence.

Complex subject and abstract object.

O castor personifica a tenacidade necessária para a transformação ambiental deliberada.

The beaver personifies the tenacity necessary for deliberate environmental transformation.

Metaphorical usage of 'personifica'.

As repercussões da extirpação do castor foram sentidas ao longo de séculos nos regimes hidrológicos.

The repercussions of beaver extirpation were felt over centuries in hydrological regimes.

Advanced term 'extirpação'.

É imperativo que a gestão do castor pondere os interesses agrícolas e ecológicos.

It is imperative that beaver management weighs agricultural and ecological interests.

Subjunctive 'pondere' after 'é imperativo que'.

O castor, mestre da hidromorfologia, esculpe a terra com uma precisão instintiva.

The beaver, master of hydromorphology, carves the earth with instinctive precision.

Poetic, academic tone.

A convergência evolutiva entre o castor e outros roedores aquáticos é um tema de estudo perene.

The evolutionary convergence between the beaver and other aquatic rodents is a perennial theme of study.

Scientific phrasing.

ترکیب‌های رایج

barragem de castor

cauda de castor

dentes de castor

pelo de castor

habitat do castor

família de castores

trabalho de castor

toca do castor

espécie de castor

reintrodução do castor

عبارات رایج

Trabalhar como um castor

— To work very hard and persistently.

Ele trabalhou como um castor para terminar o projeto.

Dentes de castor

— Used to describe someone with prominent front teeth.

Ele sempre teve dentes de castor quando era criança.

Engenharia de castor

— Referring to something built naturally or cleverly.

Esta ponte parece engenharia de castor.

Pele de castor

— Beaver fur, often in historical contexts.

A pele de castor era moeda de troca.

O castor e a barragem

— A common pairing in educational metaphors.

Pensem no castor e a barragem como causa e efeito.

Cauda chata como a de um castor

— Descriptive simile for something flat.

A prancha é chata como a cauda de um castor.

Roer como um castor

— To gnaw persistently on something.

O cão está a roer o osso como um castor.

Mestre castor

— Polite or personified way to refer to the animal in stories.

Bom dia, Mestre Castor!

Colónia de castores

— A group of beavers living together.

Vimos uma colónia de castores no Alasca.

Dique de castor

— Another word for beaver dam.

O dique de castor é muito resistente.

اغلب اشتباه گرفته می‌شود با

castor vs lontra

Otters are carnivores and don't build dams.

castor vs rícino

The plant used for castor oil.

castor vs capivara

A larger South American rodent without the flat tail.

اصطلاحات و عبارات

"Trabalhar como um castor"

— To be extremely industrious.

Desde que abriu a empresa, ele trabalha como um castor.

informal

"Ter dentes de castor"

— To have large, protruding front teeth.

Ela usa aparelho porque tinha dentes de castor.

informal

"Fazer um trabalho de castor"

— To do a very meticulous and constructive job.

O carpinteiro fez um verdadeiro trabalho de castor neste armário.

colloquial

"Ser um castor"

— To be someone who is always busy building or fixing things.

O meu avô é um castor, nunca está parado.

informal

"Paciência de castor"

— Great patience needed for a long task.

Para montar este puzzle, é preciso paciência de castor.

informal

"Olhos de castor"

— Small, bright, attentive eyes (rare).

Ele olhou para mim com os seus olhos de castor.

literary

"Vontade de castor"

— Strong will to build or create.

Ele tem uma vontade de castor de mudar o mundo.

poetic

"Silêncio de castor"

— Quietness while working (rare).

Trabalhavam num silêncio de castor.

literary

"Mãos de castor"

— Skillful hands for building.

O rapaz tem mãos de castor para a madeira.

informal

"Rasto de castor"

— Signs of someone's hard work left behind.

Havia um rasto de castor por todo o escritório.

metaphorical

به‌راحتی اشتباه گرفته می‌شود

castor vs pastor

Similar sound.

A pastor is a shepherd or a religious leader; a castor is a beaver.

O pastor cuida das ovelhas; o castor constrói barragens.

castor vs rícino

English 'castor oil' link.

Rícino is a plant; castor is an animal. Use 'óleo de rícino'.

O óleo de rícino é bom para o cabelo.

castor vs esquilo

Both are rodents.

Squirrels live in trees; beavers live in water.

O esquilo come nozes; o castor roe troncos.

castor vs lontra

Both are semi-aquatic.

Otters are sleek and eat fish; beavers are bulky and eat wood/plants.

A lontra nada muito rápido.

castor vs ratazana

Both are rodents.

Ratazana is a large rat; castor is a beaver.

A ratazana vive no esgoto; o castor vive no rio.

الگوهای جمله‌سازی

O [animal] é [adjetivo].

O castor é marrom.

O [animal] [verbo] no [lugar].

O castor nada no rio.

O [animal] é conhecido por [verbo].

O castor é conhecido por construir barragens.

Apesar de [verbo], o castor [verbo].

Apesar de ser pequeno, o castor derruba árvores.

A atividade do castor [verbo] o [substantivo].

A atividade do castor influencia o ecossistema.

É através da [substantivo] que o castor [verbo].

É através da engenharia que o castor molda a paisagem.

Mixed

Se o castor [verbo], então [consequência].

Se o castor constrói a barragem, o nível da água sobe.

Mixed

Vimos muitos [animais] no [lugar].

Vimos muitos castores no parque.

خانواده کلمه

اسم‌ها

castóreo (secretion)

castoreira (beaver trap/den)

فعل‌ها

castorar (rare: to act like a beaver)

صفت‌ها

castorino (relating to beavers)

castanho (brown - etymologically related in some theories)

مرتبط

barragem

roedor

dique

lontra

rícino

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نحوه استفاده

frequency

Common in nature/educational contexts, rare in daily urban talk.

اشتباهات رایج

Os castors → Os castores
Plural of words ending in 'r' requires 'es'.
Óleo de castor → Óleo de rícino
The oil comes from a plant, not the animal.
A castor → O castor
The word is masculine.
O castor come peixe → O castor come madeira
Beavers are herbivores, not carnivores like otters.
Cástor → Castor
There is no accent on the 'a'; the stress is on the 'o'.

نکات

Plural Rule

Words ending in 'r' always take 'es' in the plural. Castor -> Castores.

Last Syllable

Remember to stress the 'TOR' part of the word.

Beaver vs Capybara

In Brazil, use the capybara as a point of comparison to explain what a castor is.

Gender

It's always 'o castor', even if you are talking about a female (unless you say 'a fêmea').

Castor Oil

Never translate 'castor oil' literally. Use 'óleo de rícino'.

Verbs

Use 'roer' (to gnaw) to describe how they eat wood.

Context Clues

If you hear 'barragem' and 'rio', the word is likely 'castor'.

Rhyme

Castor rhymes with 'construtor' (builder).

Species Name

In science, use 'Castor fiber' or 'Castor canadensis'.

Nicknames

In some stories, they are called 'engenheiros peludos'.

حفظ کنید

روش یادسپاری

Imagine a beaver wearing a 'CAST' on its leg because it worked too hard building a 'TOR' (tower/dam). CAS-TOR.

تداعی تصویری

Picture the flat tail of a beaver. It looks like a 'C' for Castor.

شبکه واژگان

animal rio madeira barragem dentes cauda marrom nadar

چالش

Write three sentences about what a castor does using the verbs: roer, nadar, and construir.

ریشه کلمه

From the Latin 'castor', which comes from the Greek 'kastōr'.

معنای اصلی: The animal itself. In Greek mythology, Kastor was one of the Dioscuri.

Indo-European -> Latin -> Romance -> Portuguese.

بافت فرهنگی

No specific sensitivities, but avoid 'óleo de castor' to prevent confusion.

The beaver is the national animal of Canada. In the US/UK, 'castor' often refers to 'castor oil'.

Mr. Beaver in 'The Chronicles of Narnia' The Beaver (movie with Mel Gibson) Busy Beaver (mathematical concept)

تمرین در زندگی واقعی

موقعیت‌های واقعی

Nature Documentary

O castor constrói...
O habitat do...
A cauda achatada...
Engenheiro da natureza

Biology Class

A ordem Rodentia...
Dentes incisivos...
Comportamento semiaquático
Dieta herbívora

Children's Story

O Senhor Castor...
A barragem mágica
Dentes afiados
Amigo do rio

History Lesson

Comércio de peles
Extinção local
Uso do castóreo
Exploração comercial

Environmental News

Reintrodução da espécie
Gestão de água
Prevenção de secas
Impacto ecológico

شروع‌کننده‌های مکالمه

"Já viste um castor ao vivo?"

"Sabias que os castores constroem barragens?"

"Qual é a diferença entre um castor e uma lontra?"

"O que achas da reintrodução de castores nos rios?"

"Conheces algum desenho animado com um castor?"

موضوعات نگارش

Descreve como seria um dia na vida de um castor.

Explica por que o castor é chamado de engenheiro da natureza.

Compara o castor com a capivara brasileira.

Escreve uma história sobre um castor que não sabia construir barragens.

Qual é a importância dos castores para o meio ambiente?

سوالات متداول

10 سوال

Diz-se 'castor'. É um substantivo masculino.

O plural é 'castores'. Adiciona-se '-es' no final.

Não, os castores não são nativos do Brasil. O maior roedor lá é a capivara.

Diz-se 'óleo de rícino'. Evite dizer 'óleo de castor'.

Sim, o castor é um dos maiores roedores do mundo.

O castor constrói barragens (dams) e tocas (lodges).

Não, o castor é herbívoro. Ele come casca de árvore, folhas e plantas aquáticas.

Serve para nadar, equilibrar-se e avisar outros castores de perigo.

Pronuncia-se com o som forte no final: cas-TOR.

Geralmente não, mas pode morder se se sentir ameaçado. São animais selvagens.

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