be supposed to 和should have done

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解决时间 2021-04-25 03:08

提问者网友：骑士
2021-04-24 23:23

be supposed to 和should have done
WAS SUPPOSED TO表示应该做某事而未做
WAS NOT SUPPOSED TO表示不应做某事却做了
SHOULD HAVE DONE 表示因该做某事而未做
SHOULD NOT HAVE DONE表示不应做某事却做了
WAS SUPPOSED TO表示应该做某事而未做
这四个有什么关系的?比如两两相等用法?

最佳答案

五星知识达人网友：狂恋
2021-04-24 23:33

e supposed to=should
be not supposed to= shouldn't
完全相等就表示应该做什么前者有不同时态后者没有时态区分
was supposed to 过去应该做某事事实就是没做强调过去的那个时候应该发生时间
should have done 表示本应该做某事而没做强调原本应该做的事情
如,he was supposed to come yesterday 他昨天就该来
You should really have done it yourself.你应该自己做这件事

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