have been done和be done的区别

如题所述

推荐答案推荐于2017-10-06

have 是完成式的标志,have 后面谓语动词要用现在完成式
have done 是主动形式的现在完成式.
如 I have finished my homework.我已经完成我的作业了.是 “我” 主动完成的.谓语动词finished 是现在完成式
be done 是被动形式,而have 后面要用完成式,谓语动词 be （就是be 动词）的现在完成式是been,所以才有have been done
如,The classrooms have been cleaned.教室被打扫干净了.be cleaned 被打扫,现在完成式就是 have been cleaned

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have been done是什么时态 be seen to do 和be seen doing been是什么时态 have done和done i have been done have和have been have been to do have been done have being done