Learn A2 Conjunctions: And, But, Or, Because — A2 English grammar lesson by Langcom

Learn A2 Conjunctions: And, But, Or, Because

Raúl Maguiña

Fundador da Langcom | Examinador dos exames de Cambridge e SIELE

setembro 6, 2026

A2✏️ Gramática⏱️ 4 min de leitura📅 Atualizado em setembro de 2026
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Conjunctions like and, but, or, e because are small but powerful words that help you connect ideas in English. They join words, phrases, or whole sentences together. Using them makes your English sound more natural and helps you express more complex thoughts simply. For example, and adds information, but shows a difference, or gives a choice, and because explains a reason. Mastering these basic conjunctions is a key step for A2 learners to build longer, clearer sentences and improve communication.

What are conjunctions?

Conjunctions are words that connect parts of a sentence. They help you join two ideas into one longer, clearer sentence.

  • They can connect two words.
  • They can connect two phrases.
  • They can connect two complete sentences.

Using conjunctions makes your English sound more fluent and natural.

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When do we use and?

Utilizamos and to add information. It connects two similar ideas or items.

  • Uso and when you want to say 'also' or 'in addition'.
  • It shows that two things go together or happen together.

When do we use but?

Utilizamos but to show a contrast or a difference between two ideas.

  • It connects two ideas that are opposite or unexpected.
  • Uso but when you want to say 'however' or 'on the other hand'.

When do we use or?

Utilizamos or to offer a choice or an alternative.

  • It connects two different options.
  • Uso or when you want to ask about preferences or possibilities.

When do we use because?

Utilizamos because to explain the reason for something. It tells us 'why' something happens.

  • It connects an action or situation with its cause.
  • The part of the sentence with because explains the reason.
Summary of Basic Conjunctions
Conjunction Meaning / Use Exemplo
and To add information; to connect similar ideas. I bought apples and oranges.
but To show contrast or difference; an unexpected idea. It's sunny, but it's cold.
or To offer a choice or alternative. Do you want coffee or tea?
because To give a reason; to explain 'why'. She is tired because she worked late.

Exemplos

  • I like coffee and tea.
  • She is tall, but her brother is short.
  • Do you want to eat pizza or pasta?
  • I am happy because it is sunny today.
  • He plays football and basketball.
  • The film was long, but it was interesting.
  • We can go to the park or stay at home.
  • They went home early because they were tired.

Prática

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Erros comuns entre falantes de espanhol

Spanish speakers sometimes make specific mistakes with these conjunctions:

  • Overusing and: In Spanish, it's common to link many ideas with 'y'. In English, try to vary your conjunctions to make your sentences more precise. For example, instead of I went to the shop and bought bread and milk and then I went home., try I went to the shop and bought bread and milk, then I went home.
  • Confuso but e because: Lembre-se but shows contrast, and because gives a reason. Don't say I am hungry but I didn't eat breakfast. (Incorrect) instead of I am hungry because I didn't eat breakfast. (Correct).
  • Missing a comma before but ou or: When connecting two complete sentences, English often uses a comma before but ou or. Por exemplo, She likes cats, but she doesn't like dogs.

Perguntas frequentes

What is the main purpose of conjunctions?

The main purpose of conjunctions is to connect words, phrases, or clauses. They help to create longer, more complex sentences and show the relationship between different ideas.

Can I start a sentence with because?

Yes, you can start a sentence with because. Por exemplo, Because it was raining, we stayed inside. This is perfectly correct in English. Just remember to use a comma after the first part of the sentence.

How do conjunctions help me in the A2 Key (KET) exam?

Conjunctions are very useful for the A2 Key exam, especially in the Writing Part 6 (short message) and Speaking Parts 3 and 4. They help you connect your ideas clearly and logically, showing you can use a range of simple linking words to express yourself. For example, you can use and to add details, but to explain a problem, or because to give a reason.

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Sobre o autor: Raúl Maguiña

Raúl Maguiña é diretor da Asociación Educativa Langcom, um centro autorizado de preparação para o Cambridge English em seu país. Com mais de uma década de experiência no ensino de idiomas e em certificações internacionais, ele já ajudou milhares de alunos, professores e instituições de ensino em 25 países a obter as certificações de inglês da Cambridge, IELTS, TOEFL e Michigan.

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