The light went off_____ we were holding a meeting,应选while还是w
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The light went off_____ we were holding a meeting,应选while还是when
![The light went off_____ we were holding a meeting,应选while还是w](/uploads/image/z/6003439-7-9.jpg?t=The+light+went+off_____+we+were+holding+a+meeting%2C%E5%BA%94%E9%80%89while%E8%BF%98%E6%98%AFw)
while
while后加进行时态!
when和while用法上有什么区别?
1)when既可表示某一点时间,也可以表示某一段时间; 引导时间状语从句时,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生.
1.I was just reading a book when she came into my room.
她走进我房间时,我正在看书.(动作reading发生在came in之前)
2、Were you writing when the teacher came in?
老师进来的时候,你在写信吗?(动作came发生在write之后)
(2).while只能表示某一段时间;引导时间状语从句,其谓语动词只能是延续性的,而且也只能与主句中的谓语动词同时发生或存在.
1、You can’t do your homework while you’re watching TV.
你不能一边看电视一边做家庭作业.(动作同时发生) 强调 对比性
(3).while引导的时间状语从句多用进行时态,而when引导的时间状语从句多用一般时态.
例如:While they were talking ,the bell rang.(while 接延续性动词)
= When the bell rang,they were talking.(when 接短暂动词)
while后加进行时态!
when和while用法上有什么区别?
1)when既可表示某一点时间,也可以表示某一段时间; 引导时间状语从句时,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生.
1.I was just reading a book when she came into my room.
她走进我房间时,我正在看书.(动作reading发生在came in之前)
2、Were you writing when the teacher came in?
老师进来的时候,你在写信吗?(动作came发生在write之后)
(2).while只能表示某一段时间;引导时间状语从句,其谓语动词只能是延续性的,而且也只能与主句中的谓语动词同时发生或存在.
1、You can’t do your homework while you’re watching TV.
你不能一边看电视一边做家庭作业.(动作同时发生) 强调 对比性
(3).while引导的时间状语从句多用进行时态,而when引导的时间状语从句多用一般时态.
例如:While they were talking ,the bell rang.(while 接延续性动词)
= When the bell rang,they were talking.(when 接短暂动词)
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