when we were watching it和while we were watching it哪个对,为什么?

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when we were watching it和while we were watching it哪个对,为什么?
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when we were watching it和while we were watching it哪个对,为什么?
when we were watching it和while we were watching it哪个对,为什么?

when we were watching it和while we were watching it哪个对,为什么?
这得给语境
一个是当,有少许先后关系在里面.
一个是同时,基本上就是同时发生.

when we were watching it和while we were watching it 都对啊,只是后面的句子接的主句一定要是 be+doing的形式。

都对 When 和While引导的从句后面都可以跟可延续性动词 While后只能跟可延续性动词 而When后面可以跟终止性动词和可延续性动词
可延续性动词 be doing