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

Learn A2 Conjunctions: And, But, Or, Because

劳尔-马吉尼亚

Langcom 创始人 | 剑桥考试和SIELE考试考官

9 月 6, 2026

A2✏️ 语法⏱️ 阅读时间 4 分钟📅 Updated 9 月 2026
Conjunctions like and, but, or, , 和 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?

我们使用 and to add information. It connects two similar ideas or items.

  • 使用 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?

我们使用 but to show a contrast or a difference between two ideas.

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

When do we use or?

我们使用 or to offer a choice or an alternative.

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

When do we use because?

我们使用 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 示例
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.

示例

  • 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.

练习

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西班牙语母语者常犯的错误

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.
  • 令人困惑 butbecause: 请记住 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 butor: When connecting two complete sentences, English often uses a comma before butor. 例如,, She likes cats, but she doesn't like dogs.

常见问题

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. 例如,, 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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