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英语
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have been doing和have done
什么语境下应用前者,什么语境下应用后者?怎么区分?
人气:323 ℃ 时间:2019-08-23 04:27:49
解答
have done普通的完成时,表示到当前已经做完了.
have been doing用来表示从过去到现在一直在做,与普通进行时不同的是,他有从过去开始延续过来的意思.
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