原因状语从句

分类：状语从句

定义

在复合句中充当原因状语的从句。

连词

• because
• since
• as
• now that

区别

• because: 语气最强，回答why，可放句首或句中
• since: 语气较弱，表示已知的原因，‘既然’
• as: 语气最弱，表示显而易见的原因

例句

1. I did it because he asked me to.
2. Since you are here, you can help me.
3. As it was raining, we stayed home.

相关术语

• 原因状语
• 状语从句