草莓公爵
幼苗
共回答了20个问题采纳率:95% 举报
由when,while,as引导的时间状语从句.
【区别】when,while和as的区别: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”.
when:例句
We were sleeping when a big noise came out.
While引导的从句的谓语动作必须是延续性的,并强调主句和从句的动作同时发生(或者相对应).并且while有时还可以表示对比.例如:
While my wife was reading the newspaper,I was watching TV.(was reading是延续性的动词,was reading和was watching同时发生)
As表示“一边……一边”,as引导的动作是延续性的动作,一般用于主句和从句动作同时发生;as也可以强调“一先一后.
As we was going out,it began to snow.当我们出门时,开始下雪了.(as强调句中两个动作紧接着先后发生,而不强调开始下雪的特定时间)
1年前
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