could have been done ,could have
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couldhavebeendone,couldhavecouldhavebeendone,couldhavecouldhavebeendone,couldhave来个都是虚拟.couldhavedon
could have been done ,could have
could have been done ,could have
could have been done ,could have
来个都是虚拟.
could have done是主动,本来可以做而实际没做;
could have been done是被动,本来可以被做而实际没被做的.
前者是主动的 虚拟的 某事可能已经被做了、
后者是主动的。虚拟,某人可能已经做了某事
均为虚拟。前者表被动—本来可能已经被做;后者表主动—本来已经做
could have been done ,could have
有must/could/can/may/maight have been done吗
could/should/must/.加have done和have been done区别
will be done和will have done是什么情况could have been呢
could never have done
could not have done
must have been done must have done
虚拟语气 if You could have done other career What would it have been 为什么不是 if ..Had done 句
Could have done would have done should have done
英汉互译 If we had been given more time,we could have done it better
could never have done 造句
how could you have done
could have been
could have been
have been done 和 to be done
have been done 语法呢
can be done was done could be done must have been done will be done have been done用这些,每个造一个句子.上面的打错了can be donewas donecould be donemust have been donewill be donehave been done
would have done,might have done,could have done,should have done分别表示什么意思?