could have 和 might have 是英语表达“虚拟语气”的常用方式。所谓“虚拟语气”（the subjunctive mood）是指用复合谓语（情态动词+助动词+实义动词）表达与已经放生的事情结果不同的可能性推断和说话者的情绪。用 could have 在语气上比 might have 要强烈，推断自信程度也要更高一些。在语义表达适用范围上，could have 还可以用于表达不可能发生的“期待”、“希望”。might have 则无这一方面语义表达。比如，在下面的例句中，might have 就不适用：
Shelly: I got to meet Kevin. Not only is he cute but a really nice guy to boot.
Kelly: I wish I could've met him. It feels like all I do anymore is study and go to class.
could have done与might have done的区别是什么?
could have done和might have done的区别：含义不同、用法不同、侧重点不同 一、含义不同 could have done 本能够做 might have done 过去可能做 二、用法不同 could have done could (不能用 can) have done 表示“过去本能够做某事却未做。”注意：其否定形式 couldn't have done 没有虚拟语...
could have done 和 might have done 的区别
could have done 表示“过去本能够做某事却未做。”例句：Whoever could have done such a dreadful thing?究竟是谁能干出这种可怕的事呢？might have done 表示“过去本可以做某事却未做。”例句：She rubbed away a tear angrily, the way Arya might have done it.她气愤地抹去眼泪，艾丽娅抹...
could have done 和 might have done 的区别
could have done 和 might have done 的区别主要表现在两个方面：语气和语义适用范畴。could have 和 might have 是英语表达“虚拟语气”的常用方式。所谓“虚拟语气”（the subjunctive mood）是指用复合谓语（情态动词+助动词+实义动词）表达与已经放生的事情结果不同的可能性推断和说话者的情绪。用 ...
could have done 和 might have done 的区别
could have done 1.本可能做.,而实际上未做； 2.有可能做过某事,可能性较大 might have done 有可能做过某事,可能性较小.would have done 常用在虚拟语气中，表示对过去情况的虚拟，意为会做某事，其实未做； should have done 结构也是一种虚拟，表达一种责备或内疚的语气，意为，本应该做某事...
should have done could have done;might have done 有什么区别
could have done:本可以做却没做某事,强调“本来可以”;might have done: 可能已经作了某事,强调猜测.前两个都是假设,是与实际情况相反的假设.第三个是猜测.除此之外,should have done还明显含有懊悔或责怪之意.举例来讲：小明把家里的钥匙放在教室忘记带了.回到家打不开门一直蹲在门口等到晚上10点...
高中英语中might have done 和could have done
两者都表示可能已经做过么事，但是might have done 的语气更委婉或者这个可能性不是很大，could have done 的语气稍微强些，“已经做过这事”的可能较大
could have done couldn't have done might have do
could have done：能做 couldn't have done：不能做 might have done：可以做 mightn not have done：不可以做 should have done：应该做 shouldn't have done：不应该做 need have done：需要做 needn't have done：不需要做 ~_~区别可以分出来吗？给你补了几个，希望可以采纳，谢谢！
虚拟语气could\/should\/would\/might +have done 用法的差别?麻烦
虚拟语气在英语中，尤其是could, should, would, might + have done的结构，表达了一种假设或可能性的对比。让我们来看看它们之间的区别：1. "Could have done" 表示的是过去有能力或机会做某事，但实际未做，带有遗憾的语气。例如，"很可惜你没做那件事，事实上你能够做的，所以选C"，这暗示了...
"might have done\/could have done"
might have done 表示：本来可以做。。。（而实际上没做） 不太可能的 如：I don't know where my father is. But he might have gone to work.could+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。非常肯定的 He could have passed the exam, but he was too careless...
虚拟语气could\/should\/would\/might +have done 用法的差别?麻烦解答一...
could have done本来能够做什么，事实上没做 should have done本来应该做 would have done将来可能做 might have done可能做了 1. 很可惜你没做那件事，事实上你能够做的，所以选C 2. might as well 做什么更好，既然我无事可做，还不如跟着你好了 3. B， 对将来时的虚拟，他可能会迟到，...
