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while,as,when 区别?

分类: 作业答案 • 2021-12-28 17:04:03

问题描述：

while,as,when 区别?

答

while,as,when 都可解释为“当…时候”,用来引导时间状语从句,但有区别：1、while 意为 during the time that“在……期间”,表达一个“时间段”,不能表达“时间点”,从句的动词只限于持续性动词.例如：One day whil...

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while,as,when 区别?

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