看很多书上说,couldn't/mightn't have done没有虚拟的意思.那么

来源：学生作业帮编辑：大师作文网作业帮分类：英语作业时间：2024/11/10 11:14:46

看很多书上说,couldn't/mightn't have done没有虚拟的意思.那么
without your help,we couldn't have finished the work so soon.中的couldn't have done难道不是虚拟吗.
请详述~谢谢

是,虚拟语气是对事情的一种假象,可以使对过去的,或者是对将来的,但是可以带一些个人的表情,可以使责备、叹息、憧憬等等.想情态动词过去式+have done,是虚拟语气,只是在翻译的时候,往往要根据句意带上感情.
这句话的意思是“要是没有你的帮助,我们就不能这么快的完成工作.”应该是表示感谢的.

看很多书上说,couldn't/mightn't have done没有虚拟的意思.那么 couldn't have done和mightn't have done有什么区别 couldn't have done? couldn`t have done 不用于虚拟语气么有没有can have done sth?could have done sth有两种意思吗?can't/couldn' couldn't have done 有不可能的意思吗?问题二它和cant have done的区别 couldn't have done与couldn't区别 couldn't have done 表示什么 couldn't have done,"不可能已经"? they couldn't have done better是什么意思 shouldn’t have done的几个意思求两组英语句型的解释could have done 和 couldn't have doneshould have do