having been done和have been done的区别

问题描述:

having been done和have been done的区别
如题目....区别在哪里呢?麻烦个位赐教
1个回答 分类:英语 2014-09-30

问题解答:

我来补答
having been done是完成进行时
have been done是完成时
其实都是完成时,have been done用的比较多,比较少人用完成进行时,不用太刻意去追求语法
 
 
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