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英语
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have been doing ,have done和have doing区别
人气:186 ℃ 时间:2019-08-20 21:51:54
解答
1、have been doing 是现在完成进行时, 表示已经做了并且还在做的事情.I have been answering many questions.2、have done 是一般现在时, 表示已经完成的事情I have answered 40 questions.3、have doing 不存在...
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