shouldn't have done couldn'd have done should have done coul

来源：学生作业帮编辑：搜搜考试网作业帮分类：英语作业时间：2024/04/28 16:01:47

shouldn't have done couldn'd have done should have done could have done 他们的意思到底实际有没有做
就是比如说第一个的意思到底实际上有没有做
很纠结啊

1.should have done 本应该做而实际未做,表示后悔的虚拟语气.
2.shouln't have done 本不应该做而实际做了.如：he was very sad now. I shouldn't have scolded him.
3.could have done 表示本可以（有能力）做,而实际未做.I could have finished my work on time, but I wasted a lot of time chatting on line.
4.couldn't have done 与前三者不一样,不表示后悔,责备的语气.而表示比较肯定的猜测语气,翻译为：（过去）不可能做.如：Tom couldn't have broken the window,beause he was watching TV at home at that moment.
再问：你确定吗第四个和前三个不一样？？？

should have done ,shouldn't have done.could have done,couldn should have done和shouldn't have done,couldn't have couldn't have done? 区别shouldn't have done 和 needn't have done can't be done.should be done.should have done should have done 它的否定式是 shouldn't have done shouldn’t have done的几个意思关于shouldn"t have done的用法 Could have done would have done should have done should have done中的have done 是什么? could have done和should have done couldn't have done 表示什么