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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
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）
The light went off_____ we were holding a meeting,应选while还是w we were having a meeting.The lights () A.went of While we were reading the newspaper,the light---------(go)ou They were reading ( ) the light was out .A.when B.while选A还是B We were watching TV ___ suddenly the light went out. The light went out while I ____my homework. 精确的解释,next week we have a meeting were we discuss all the ne Holding your hand I won't fear tomorrow.Here were we stand w while we were swimming in the river,we saw a fish jump out o THE MEETING ____ OVER,WE WENT TO OUR CLASSROOM TO HAVE A DIS The meeting ____ at midnight and we all went home late.A bro Our neighbors were _____ the garden while we were away.