什么时候用would have done结构

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/21 14:24:11

什么时候用would have done结构
我做题的时候(虚拟语气）总是把would 和would have 弄混,是不是错综条件句就一定用would have 还是什么什么,这种替我至少错了30道了.

此短语的用法见于下面两种形式
1.与将来完成时相对应.比如
we will have finished the work by the end of this month.
she said that we would have finished the work by the end of this month.
2.就像楼上所说,在与过去事实相反的假设的虚拟语气中,从句用had done,主句用could/would/should/might have done

什么时候用would have done结构虚拟语气中的would have done 与could have done结构有什么区别?什么时候用would什么虚拟语气中,什么时候用would have done,would do 虚拟语气的主句,什么时候用would do?什么时候用would have done? would to have done结构与would have like to do结构有什么区别? 有would rather not have done sth的结构吗关于would have done would have done 用法什么时候要用 have done,had done,have had done.have di to have been done结构怎么用 Could have done would have done should have done 什么时候用情态动词+have+done,什么时候用would,could等情态动词的过去式,单项选择时,如何区分两者