请问,during、while和when三者在用法上有何区别?

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请问,during、while和when三者在用法上有何区别?
请问,during、while和when三者在用法上有何区别?

请问,during、while和when三者在用法上有何区别?
during是指在什么期间它和when,while的意思是不一样的when一般接瞬间动词,比如start等词,而while后可以接连续动词,可以指一直做的动作.

during后面接名词：I went to visit the Great Wall during the summer vacation.我暑假里去游览了长城。
when,while都意为“当…”，都引导时间状语从句。
when强调时间点，通常译为“当…”，例如：
When she came in, I was cooking. 她进来时，我正在做饭。
w...

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during后面接名词：I went to visit the Great Wall during the summer vacation.我暑假里去游览了长城。
when,while都意为“当…”，都引导时间状语从句。
when强调时间点，通常译为“当…”，例如：
When she came in, I was cooking. 她进来时，我正在做饭。
while强调时间段，通常译为“正当……”，

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