“can’t have done”语气更直接且口语化,而“couldn’t have done”更委婉。 对比: She can’t have lied to us!(直接否定) She couldn’t have lied to us.(委婉否定) 与“might not have done”的差异 “might not have done”表示“可能没做”,留有余地;而“cou...
could not have done是什么意思?1、本不能做某事却做了2、不可能做某事 是上面哪一个?还是两个都是?还是都不是? 答案 两个都是,但常表示“本不能做某事却做了”.表示“不可能做某事”是对过去事情的推测.eg:He couldn't have failed the exxam,and he studied hard recently.相关推荐 1could not have...
1. 本不可以做而做了 ... should not have done 本不该做而做了could not have done本不可以做而做了might not have done 对过去事实的否定判断 ... www.360doc.com|基于5个网页 2. 不可能做过某事 高一英语人教课标必... ... in search of 寻找could not have done不可能做过某事must have done...
1. I could not have done it without your help. 没有你的帮助,我不可能完成这件事。 2. She could not have done better on the exam. 她在考试中表现得无懈可击。 3. They could not have done more to support us. 他们为我们提供的支持已经尽到了最大努力。 4. We could not have done anyt...
could not have done是情态动词的虚拟用法,本来不能做某事,但实际上做了. could have done是情态动词的推测用法,是可能已经做了. could not do 是情态动词的基本用法,不能做. could do是情态动词的基本用法,能够做. 分析总结。 couldnothavedone是情态动词的虚拟用法本来不能做某事但实际上做了结果...
could not have done的缩写形式是couldn't have done，是may have done的否定形式。couldn't have done表示不可能，是对过去情况的推测。couldn't have done不仅可以表示过去完成时的否定，还可以表示虚拟语态，表达与过去的事实相反。could not have done的用法及举例 couldn't have done表示不可能的，是对过去...
i would have not done 还是 i would not have done i could have not done or i could not have done 相关知识点: 试题来源: 解析 答案是i would not have done.i could not have done 因为主句用should/could/might/would+(not)have done.表示对从句如果实现的结果.是对过去的虚拟...
Could not have done 有两种意思：意指不可能发生的事情，用于指对过去发生的事情的判断，例如：She could not have done that, cause she was not in there last night.（她不可能做的，因为昨晚她根本不在那）He could not have seen it, because he was blind.（他不可能看到的，因为他是盲人）对本不...
这个句子里的could have done和 could not have done该怎么理解？could have done 是英文中常见的句型...
could+have+done和could not+have+done是两个概念 1、Could have done = would have done 表虚拟语气i.e:He would not die If I COULD HAVE HELPED him.如果当时我能帮助他,他就不会死.(COULD HAVE HELPED可以和WOULD HAVE HELPED替换,意思一样) 2、Could NOT have done不是虚拟语气Could have done的否定...