had been done与had done是什么结构他们的用法是什么

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/10 22:09:16

had been done 是过去完成被动时态
had done 是过去完成时态,表示过去某时间前已经发生的动作或情况,这个过去的时间可以用by,before等介词短语或一个时间状语从句来表示；或者表示一个动作在另一个过去动作之前已经完成.
we had just had our breakfast when peter came in
i had done sth=sth had been done by me
一般这两个时态有固定的时间状语做搭配的
关键还是要看上下文进行选择的

has been done,had been done 的区别是什么? had done 是什么时态? Had done是什么时态 what had been done had been done. have done与had done是什么时态,有什么不同? had been done had done区别 have done和have been done的用法是什么? having been done和had been done的区别 had been done & having been done 区别 have been doing 和have done 还有had done三者的区别,用法 has/had been gone和has had been done的区别是什么啊我要疯了.做题总错 what done has been done has been done?在说说他的结构是什么时态?

had been done与had done是什么结构 他们的用法是什么

had been done与had done是什么结构他们的用法是什么