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?
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could not have done
May not have done 是表示可能不还是不可能 那Could not have done呢
1should not have done 2 could not have done 3 would not have done 有什么区别
请问could not have done/might not have done可用于虚拟语气中吗
情态动词加上完成时的意思?could not have done must not have done should not have done would not have done 以及它们的用法?
could never have done
请问是have not only done ...but also done ...还是 have not only done ...but also have done ...
can have done could have done should have done should to do shouldn't have done shouldn't to do还有needn't have doneneedn't domustn't have donemay not have donemight not have done
Could have done would have done should have done
could have been done ,could have
could never have done和could not do有什么区别
could never have done 造句
how could you have done
英文句子 I could not have done this without you为什么要+have?和I could not done this without you有什分别?
would have done,might have done,could have done,should have done分别表示什么意思?
should have done ,shouldn't have done.could have done,couldn't have done
could have done和need have
She said her only regret was that she could not have done more than she did.这句怎么翻译.出现的she是一个人还是两个人?