作业帮哪位能否解释下could have done与would have done的用法区别?哪位高手能否具体解释下could have done与would have done的用法区别?
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/09 12:04:37
哪位能否解释下could have done与would have done的用法区别?哪位高手能否具体解释下could have done与would have done的用法区别?
哪位能否解释下could have done与would have done的用法区别?
哪位高手能否具体解释下could have done与would have done的用法区别?
哪位能否解释下could have done与would have done的用法区别?哪位高手能否具体解释下could have done与would have done的用法区别?
根据词语表面意思理解
could来自于can表示能够 could have done 就是说“本能够做到什么”（隐含当时没能达到这个能力）
would来自于will表示推测 would have done 是说“本将会怎么做”（隐含当时没有这个意愿）
前者侧重说能力,后者侧重说意愿.
本来有能力做到的不一定是意愿做的,本来意愿做到的一定是本来也有能力做到的.这就是细微差别吧.当然是我自己的理解.
举两个例子：
1、“这道题错的真可惜,考试时候本来可以做对的.”用could have done 因为这里想表达当初可以做对这一“能力”；而不存在“当时没有做对的意愿”
2、“我要是当时把门锁上了,家里就不会失窃了.”用would have done 因为这里表达当初可以把门锁上的这一“意愿”,作者在暗示后悔自己当时没想着去锁门而不是“没能力锁门”.
当然具体意思差别不大,
意思差不多，都是本该做的但是没有做！
语气上有所差别，would have done比could have done语气更弱一些。
其实很简单 ，看他们的原型就好。could的原型是can，would的原型是will
could have done(本可以做某事却没做)
would have done(本想做某事却没做)
“could+have+done”是虚拟语气，表示对过去事情的假设，意思是本来能够做某事而没有做。
He could have passed the exam, but he was too careless. 本来他能够通过考试，但是他太粗心。
“wo...
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could have done(本可以做某事却没做)
would have done(本想做某事却没做)
“could+have+done”是虚拟语气，表示对过去事情的假设，意思是本来能够做某事而没有做。
He could have passed the exam, but he was too careless. 本来他能够通过考试，但是他太粗心。
“would+have+done”虚拟语气，表示对过去事情的假设，意思是“本来会做”。
1. 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。
2. Without your help, I wouldn't have achieved so much. 没有你的帮助，我是不会取得如此大的成绩。
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看具体情景。
could have done主要表示的是能力，过去本来能够做某事而没有做。
I could have told you on time that day.我那天本来能够及时告诉你的。
would have done,是过去将来完成时，主要表示的是过去对将来的虚拟。
I would have told you if i had been here th...
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看具体情景。
could have done主要表示的是能力，过去本来能够做某事而没有做。
I could have told you on time that day.我那天本来能够及时告诉你的。
would have done,是过去将来完成时，主要表示的是过去对将来的虚拟。
I would have told you if i had been here that day.如果那天我在的话，我就会告诉你了。
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