Conjunction Pair 因为…所以… (yīnwèi…suǒyǐ…) – Because… Therefore…

Pattern

• 因为 + Reason ，所以 + Result
• 因为 + Clause 1 ，所以 + Clause 2

Usage

• The correlative conjunction pair 因为…所以… (yīnwèi…suǒyǐ…) is the primary grammatical structure used to express cause and effect in Chinese.
• 因为 introduces the causal premise ('because'), while 所以 introduces the resulting outcome ('therefore / so').
• The pattern is: 因为 + Reason Clause, 所以 + Result Clause.
• For example: 因为下雨，所以我没去 ('Because it rained, [so] I did not go').
• A notable contrast with English syntax:

Examples

1. 1

   因为下雨,所以我没去。

   Yīnwèi xià yǔ, suǒyǐ wǒ méi qù.

   Because it rained, I did not go.

2. 2

   因为他生病了,所以没来上课。

   Yīnwèi tā shēngbìng le, suǒyǐ méi lái shàngkè.

   Because he was sick, he did not come to class.

3. 3

   因为很忙,所以我没给你打电话。

   Yīnwèi hěn máng, suǒyǐ wǒ méi gěi nǐ dǎ diànhuà.

   Because I was very busy, I did not call you.

4. 4

   我学汉语。