Q:when引导的状语从句怎么用?

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Q:when引导的状语从句怎么用?

Q:when引导的状语从句怎么用?
Q:when引导的状语从句怎么用?

Q:when引导的状语从句怎么用?
when引导的从句的谓语动词可以是延续性的动词,又可以是瞬时动词.并且when有时表示“就在那时”.例如:
When she came in,I stopped eating.她进来时,我在吃饭.(瞬时动词)
When I lived in the countryside,I used to carry some water for him.当的住在农村时,我常常为他担水.(延续性的动词)
We were about to leave when he came in.我们就要离开,就在那时他进来了.
状语从句在前时,与主句之间用逗号相隔;置于句子后面时直接与主句相连,不加逗号.
在复合句中,要注意主句和从句的时态大多都要保持一致.