would have done和 should have done的区别是什么

Question

如题所述

Answer 1

1.should/ought to have done的含义.“should/ought to have＋过去分词”表示“过去应该做谋事却没有做”； “should not/ought not to have＋过去分词”表示“作了不应该做的事”.含有责备或遗憾的意思.例如：
You shouldn’t /oughtn’t to have come here alone at such a late hour.你这么晚的时候本不一该一个人来这里的.（实际是一个人来的）
She should/ought to have gone there alone.她本该一个人去那里的.（实际上不是）　
2.would have done的含义.would have done“本愿意做某事”,非虚拟语气时,就是would 情态动词加动词原形,
have done 就是现在完成时,所以和起来 就是将来完成时的用法
过去将来完成时表示在过去看来将来某时会已经完成的动作.例如：
She said she’d have finished her exams by then.她说那时她会已经考完试了.
He knew he arrived she would have gone home.他知道他到时她会已经回家了
3.must have done的含义.“must have＋过去分词”表示对过去的推测,意思是“一定已经,想必已经,准是已经….”,只用于肯定句中.例如：
He must have been drinking beer.他肯定一直喝啤酒来着.
若要表示否定,要用“can’t/couldn’t+ have+过去分词”,意思是“不可能”：
The money can’t have been lost there.钱不可能是在那儿丢的.
should have done“本应该做某事”
might have done“可能做过某事”
could have done“本可以做到某事”
would have done“本愿意做某事”
都是表示与过去事实相反.if条件句中的虚拟基本含义相同,只是要注意主从句时态一致

Answer 2

would/should + have + 过去分词 这是虚拟语气的一种用法。

would have done ：表示对过去事情的假设，意思是“本来会做”。
比如：
I would have told you all about the boy's story, but you didn't ask me. 我本来会告诉你这个小男孩的故事，但是你没有问我。

should have done: 表示对过去事情的假设，意思是本来能够做某事而没有做。含有指责对方或自责的含意。
比如：
Tom, you are too lazy. The work should have been finished yesterday. 汤姆，你太懒惰了，这项工作本来应该昨天就做完的。本回答被提问者采纳

Answer 3

would/should + have + 过去分词 这是虚拟语气的一种用法.
would have done ：表示对过去事情的假设,意思是“本来会做”.

should have done:表示对过去事情的假设,意思是本来能够做某事而没有做.含有指责对方或自责的含意.

Answer 4

should have done 强调的是本应该做什么却没有做，而would have done 则没有这层意思

Answer 5

would have done 过去打算做，但没做
should have done 过去本来要做，但没做