I should have keep my room clean.为什么加have?

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I should have keep my room clean.为什么加have?
I should have keep my room clean.为什么加have?

I should have keep my room clean.为什么加have?
should have + 过去分词（done）是虚拟语气中的一种用法,表示本应该做某事但没做,有一种责备的语气在里面.此处should 可以更换为ought to
should not have +过去分词（done）表示本不应该做的事情却做了,也有一种责备的语气在里面.
以上均是对过去的事情表示虚拟.
你给出的句子中keep应改为kept

被动语态！

因为这个句子是错的

should have表示本应该做某事,但没做,主要用于责备他人或表示自责
如果是should not have，就表示本不该做的事却做了

这里应该不是keep,而是kept,意思是我本应该让房间保持干净的，事实上现在房间很脏乱。如果没有"have",意思就比较单一了，就是我应该怎么怎么做而已，而无其他意思。

对过去的一种虚拟句型就是 should have +过去分词
你的句子应是I should have kept my room clean.

表示本应该怎么做

虚拟语气表示本应该但没能做

你怪它

have 是保持的意思
here " have" means "keep"

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