B2 Complex Sentences 5 min de lectura

Orações Adjet

Relative clauses connect ideas by describing nouns, requiring precise pronoun choice and careful comma placement to convey meaning.

The Rule in 30 Seconds

  • Relative clauses describe nouns using pronouns like `que`, `quem`, and `onde`.
  • Restrictive clauses (no commas) define a specific person or thing.
  • Explanatory clauses (with commas) add extra, non-essential information.
  • Relative pronouns must include required prepositions based on the verb used.

Quick Reference

Pronoun Usage Agreement Example
que Universal (People/Things) Invariable O livro `que` li.
quem Only for people Invariable A médica de `quem` falei.
onde Only for physical places Invariable A casa `onde` moro.
cujo Shows possession With the thing possessed O autor `cujos` livros li.
o qual Formal clarity With the noun described A lei `a qual` me referi.
quanto After 'todo', 'tanto' With the noun Fez tudo `quanto` podia.

Ejemplos clave

3 de 9
1

Os alunos que estudam passam na prova.

The students who study pass the test.

2

O sol, que é uma estrela, brilha muito.

The sun, which is a star, shines a lot.

3

Esta é a casa cuja porta é azul.

This is the house whose door is blue.

💡

The 'Cujo' Rule

Never use an article after `cujo`. Say `cujo pai`, never `cujo o pai`. It’s like wearing a hat on top of a helmet—just too much.

⚠️

The Location Trap

Be careful with `onde`. Use it only for physical places. For abstract things like 'situation' or 'era', use `em que` or `na qual`.

The Rule in 30 Seconds

  • Relative clauses describe nouns using pronouns like `que`, `quem`, and `onde`.
  • Restrictive clauses (no commas) define a specific person or thing.
  • Explanatory clauses (with commas) add extra, non-essential information.
  • Relative pronouns must include required prepositions based on the verb used.

Overview

You already know how to use adjectives. You can say carro rápido or comida gostosa. But sometimes, a single word isn't enough. You need more space to describe things. This is where Orações Adjetivas come in. They act like big, fancy adjectives. They help you connect ideas smoothly. Instead of two short, choppy sentences, you create one elegant thought. Imagine you are at a job interview. You want to sound professional and precise. These clauses are your best friends for that. They help you specify exactly which person or thing you mean. Think of them as the 'zoom lens' of your grammar. They bring focus to your conversation.

How This Grammar Works

These clauses depend on a main sentence to exist. They cannot stand alone. They always refer back to a noun or pronoun. We call this word the 'antecedente'. To connect the two parts, we use Pronomes Relativos. The most famous one is que. It is the Swiss Army knife of Portuguese grammar. It works for people, objects, and ideas. You also have quem for people. There is onde for physical places. For showing possession, you use cujo. Finally, o qual is used for more formal clarity. These pronouns act like a bridge. They replace a repeated word and link the two sentences. It keeps your speech from sounding like a toddler's list.

Formation Pattern

  1. 1Building these sentences follows a clear logic.
  2. 2Identify the common element in two separate thoughts.
  3. 3Choose the correct relative pronoun based on that element.
  4. 4Place the pronoun immediately after the word it describes.
  5. 5Decide if the information is essential or just extra info.
  6. 6Use commas if the information is an extra explanation.
  7. 7Do not use commas if the information defines the noun.
  8. 8Think of it like building a Lego set. You have two blocks. The relative pronoun is the specialized piece that clicks them together. If you miss the connector, the whole structure falls apart.

When To Use It

Use relative clauses when you need to be specific. Maybe you are at a crowded party. You want to point out the guy who speaks five languages. You say: Aquele é o homem que fala cinco línguas. It is perfect for giving directions too. A rua que fica atrás do museu é sem saída. Use them in emails to clarify details. O relatório que enviei ontem está incompleto. They are essential for storytelling. They help you add background without stopping the action. You will use them in 80% of your B2 level conversations. They make you sound like a native speaker who actually knows the rules.

When Not To Use It

Don't overcomplicate things if a simple adjective works. If you can say cachorro bravo, don't say o cachorro que tem muita raiva. It sounds robotic. Also, avoid 'nesting' too many clauses. If your sentence has three que in a row, stop. You are creating a grammar maze. Your listener will get lost. Break it up into two sentences. Simplicity is still a virtue in Portuguese. Also, don't use onde for time or abstract ideas. Native speakers do it, but it is technically a mistake. Use em que or no qual instead. Keep your onde for places with a physical address.

Common Mistakes

The biggest trap is 'Regência'. This is just a fancy word for prepositions. Many learners forget the preposition before the relative pronoun. If you like something, you like de something. So, you must say: O filme de que eu gosto. Not just O filme que eu gosto. Yes, even native speakers mess this up sometimes! Another mistake is using cujo incorrectly. It must agree with the thing possessed, not the owner. It is like a grammar chameleon. Also, watch your commas. A comma can change the entire meaning of your sentence. It is the difference between 'all my friends' and 'only some friends'. Commas are the traffic lights of your logic.

Contrast With Similar Patterns

Do not confuse Orações Adjetivas with Orações Substantivas. Adjective clauses describe a noun. Substantive clauses act like the noun themselves. For example: Eu sei que você estudou (Substantive). Here, the clause is the object of 'knowing'. Now look at: O aluno que estudou passou (Adjective). Here, the clause describes the 'student'. It is a subtle difference, but important for your brain to categorize. Adjective clauses are always like a 'tag' on a suitcase. They tell you more about the suitcase. Substantive clauses are the suitcase itself.

Quick FAQ

Q. Can I use que for everything?

A. Almost! It is the most common, but quem is better for people after prepositions.

Q. Why do I need cujo?

A. To show possession without saying 'of the' five times.

Q. Do commas really matter?

A. Yes! They define if you are talking about a group or a specific individual.

Q. Is o qual just for being fancy?

A. Not really. It helps avoid ambiguity when you have two possible nouns to describe.

Q. Can I drop the relative pronoun like in English?

A. Never. In Portuguese, the bridge must always stay standing.

Reference Table

Pronoun Usage Agreement Example
que Universal (People/Things) Invariable O livro `que` li.
quem Only for people Invariable A médica de `quem` falei.
onde Only for physical places Invariable A casa `onde` moro.
cujo Shows possession With the thing possessed O autor `cujos` livros li.
o qual Formal clarity With the noun described A lei `a qual` me referi.
quanto After 'todo', 'tanto' With the noun Fez tudo `quanto` podia.
💡

The 'Cujo' Rule

Never use an article after `cujo`. Say `cujo pai`, never `cujo o pai`. It’s like wearing a hat on top of a helmet—just too much.

⚠️

The Location Trap

Be careful with `onde`. Use it only for physical places. For abstract things like 'situation' or 'era', use `em que` or `na qual`.

🎯

Clarity Pro

When you have two nouns and want to be super clear which one you're describing, use `o qual`. It matches the gender and number of the specific noun.

💬

Social Polish

In casual speech, Brazilians often drop the prepositions (e.g., 'o filme que eu gosto'). But in writing or formal situations, keeping them marks you as a sophisticated speaker.

Ejemplos

9
#1 Basic (Restrictive)

Os alunos que estudam passam na prova.

Focus: que estudam

The students who study pass the test.

Only the specific students who study pass.

#2 Basic (Explanatory)

O sol, que é uma estrela, brilha muito.

Focus: que é uma estrela

The sun, which is a star, shines a lot.

Adds an extra fact about the sun.

#3 Possession

Esta é a casa cuja porta é azul.

Focus: cuja

This is the house whose door is blue.

`Cuja` agrees with `porta` (feminine).

#4 Place

O restaurante onde almoçamos é ótimo.

Focus: onde

The restaurant where we had lunch is great.

Use `onde` for physical locations.

#5 With Preposition

O cargo a que aspiro é difícil.

Focus: a que

The position to which I aspire is difficult.

The verb `aspirar` requires the preposition `a`.

#6 Formal Clarity

Vi a filha do vizinho, a qual estava doente.

Focus: a qual

I saw the neighbor's daughter, who was sick.

`A qual` clarifies that the daughter was sick, not the neighbor.

#7 Mistake Corrected

✗ O homem que eu falei... → ✓ O homem com quem eu falei...

Focus: com quem

The man I spoke to...

You speak 'with' someone, so you need `com`.

#8 Mistake Corrected

✗ A cidade que eu moro... → ✓ A cidade em que eu moro...

Focus: em que

The city where I live...

You live 'in' a place, so you need `em`.

#9 Advanced

Não sei o motivo pelo qual ele saiu.

Focus: pelo qual

I don't know the reason why he left.

`Pelo qual` is common for reasons or methods.

Ponte a prueba

Choose the correct relative pronoun with the required preposition.

O filme ___ eu gostei muito foi premiado.

✓ ¡Correcto! ✗ No del todo. Respuesta correcta: de que

The verb 'gostar' requires the preposition 'de'. Therefore, you must use 'de que'.

Select the correct pronoun to show possession.

A mulher ___ carro quebrou está esperando.

✓ ¡Correcto! ✗ No del todo. Respuesta correcta: cujo

'Cujo' already shows possession and never takes an article ('o/a') after it.

Which sentence is an explanatory clause (adding extra info)?

___

✓ ¡Correcto! ✗ No del todo. Respuesta correcta: Meu irmão, que mora em Paris, vem nos visitar.

The commas indicate that the information is an extra explanation about 'my brother' (assuming I have only one or it's clear which one).

🎉 Puntuación: /3

Ayudas visuales

Restritiva vs. Explicativa

Restritiva (No Commas)
Define um subgrupo. Defines a subgroup.
Os carros que são caros... The cars that are expensive...
Explicativa (With Commas)
Dá informação extra. Gives extra info.
O carro, que é caro... The car, which is expensive...

Qual pronome usar?

1

Refere-se a um lugar físico?

YES ↓
NO
Use 'que' ou 'quem' (se pessoa).
2

Há ideia de posse?

YES ↓
NO
Use 'onde'.
3

O verbo exige preposição?

YES ↓
NO
Use 'cujo'.

Dicas Rápidas

⚠️

Cuidado

  • Não use artigo após 'cujo'
  • Verifique a preposição do verbo

Lembre-se

  • Comas = Informação extra
  • 'Que' é o mais comum

Preguntas frecuentes

21 preguntas

It is a clause that describes a noun from a previous sentence, acting like a long adjective. For example: O homem que trabalha aqui.

They help you combine sentences and sound more fluent. Without them, you sound like a textbook: Eu vi o homem. O homem é alto.

They can be tricky because of prepositions and commas, but at the B2 level, they are essential for complex thoughts.

In most cases, yes. Que is the most versatile relative pronoun in Portuguese.

Use quem only for people and usually after a preposition, like in A pessoa de quem gosto.

Use onde only when referring to a physical location, like A cidade onde nasci.

No, onde is strictly for space. For time, use quando or em que.

It means 'whose'. It shows possession between two nouns, like O autor cujos livros são famosos.

Commas change the meaning. No commas = defining a specific one. Commas = giving extra info about all of them.

Os alunos que estudaram passaram means ONLY the ones who studied passed.

Os alunos, que estudaram, passaram means all the students passed, and by the way, they all studied.

O qual (and its variations) is more formal and used to avoid confusion between two nouns.

No, unlike English ('the book I read'), you must always include the pronoun in Portuguese (o livro que li).

If the verb in the clause needs a preposition, that preposition must go BEFORE the relative pronoun. Example: O filme a que me referi.

Yes, quem always refers to people, while que can be anything.

It means 'to which' or 'that'. Example: A regra a que ele obedece.

Forgetting the preposition (Regência) and using articles after cujo are the top two errors.

In English, you can move prepositions to the end ('the man I talked to'), but in Portuguese, they must stay in front.

Very similar! The main difference is the specific forms like cujo (PT) vs cuyo (ES).

Practice by rewriting two simple sentences into one using que or onde.

Pay close attention to the verb in the relative clause; it's the one that 'calls' the preposition.

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