英语中的状语从句可以用特定的词语引导,包括时间状语从句的引导词如"When"、"While"、"Before"、"After"、"Until"、"Since";原因状语从句的引导词如"Because"、"Since"、"As"、"Seeing that";条件状语从句的引导词如"If"、"Unless"、"Provided that"、"As long as"。理解这些引导词可以使英语表达更准确、清晰、流畅。
时间状语从句
时间状语从句是用来表示时间关系的从句,常用的引导词包括:
- When(当...的时候)
- While(当...的时候)
- Before(在...之前)
- After(在...之后)
- Until(直到...为止)
- Since(自从...以来)
例如:
- When I arrived at the party, everyone had already left.(当我到达聚会时,所有人已经离开了。)
- While I was reading a book, my phone rang.(当我正在看书的时候,电话响了。)
- Before you go to bed, remember to brush your teeth.(在你睡觉之前,记得刷牙。)
- After I finish my homework, I will watch TV.(在我完成作业之后,我会看电视。)
- I will stay here until you come back.(我会一直待在这里,直到你回来。)
- Since he got the new job, he has been very busy.(自从他得到了这份新工作,他一直很忙。)
原因状语从句
原因状语从句是用来表示某个行为或者事件的原因,常用的引导词包括:
- Because(因为)
- Since(因为)
- As(因为)
- Seeing that(由于)
例如:
- I couldn't go to the party because I was sick.(我不能去参加聚会,因为我生病了。)
- Since you are already here, why not stay for dinner?(既然你已经来了,为什么不留下来吃晚饭呢?)
- As it was getting late, we decided to leave.(由于时间已经很晚了,我们决定离开。)
- Seeing that it was raining heavily, we decided to stay at home.(由于下大雨,我们决定待在家里。)
条件状语从句
条件状语从句是用来表示某个行为或者事件的条件,常用的引导词包括:
- If(如果)
- Unless(除非)
- Provided that(以...为条件)
- As long as(只要)
例如:
- If it rains tomorrow, we will stay at home.(如果明天下雨,我们会呆在家里。)
- Unless you finish your homework, you can't go out to play.(除非你完成了作业,否则你不能出去玩。)
- Provided that you behave well, you can have a piece of cake.(只要你表现好,你就可以吃一块蛋糕。)
- As long as you follow the rules, you can use the playground.(只要你遵守规定,你就可以使用操场。)