should have done中的have done 是什么?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/16 00:08:38

should have done中的have done 是什么?
这里的have done 是什么?是不定式的完成时吗?如果是的或,那to哪里去了?
我的印度英语老师在给解释的时候曾经说should 后面的have done 是infinitive perfect .我也记得在什么时候曾经看到过should 后面加to have done 的时候应该省略to .还有一个就是这是过去将来完成时的形式。

不是不定式喔
have done 是do的完成时态
should是应该的意思虚拟语气后面接原型的have
所谓的省略to是说 should在这里有命令的语气和意思
但是这种记法只会让你自己更加混乱而已

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