have been doing ,have done和have doing区别

have been doing ,have done和have doing区别

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推荐答案 2020-03-25

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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