有must/could/can/may/maight have been done吗
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有must/could/can/may/maight have been done吗
![有must/could/can/may/maight have been done吗](/uploads/image/z/3614726-38-6.jpg?t=%E6%9C%89must%2Fcould%2Fcan%2Fmay%2Fmaight+have+been+done%E5%90%97)
1.can,could 比 may,might的可能性大些.
can,could 之间的区别,和 may,might 之间的区别在于,虚拟句和过去时态用后者,表示的可能性比原词小,但大部分时候2者可以互换,不会产生歧义或者对表述造成干扰.
2.could have done,might have done 是过去完成时态,不知你问的“可能性”是何意.
例如,Do not point me with a gun ever!I could have been killed.意思是"以后别在用枪指着我了,会出人命的!" 意思是point me with a gun 这件事情已经发生过了,所以才说那时候会差点没命.
但是如果说 Do not point me with a gun,I can be killed.是警告,point me with a gun这件事还没有发生,只是说可能会出人命而已.
3.过去时态用 could,might.例子:If it wasn't you,I could have finished my job by now.如果不是因为你,我现在应该已经完成工作了!
could 表示有这个能力;而这个句子之所以不用might have finished my job,是因为might表示的可能性太小,没有足够的说服力去职责别人.
再问: 他工作起来一定很认真 [表推测]怎么用
can,could 之间的区别,和 may,might 之间的区别在于,虚拟句和过去时态用后者,表示的可能性比原词小,但大部分时候2者可以互换,不会产生歧义或者对表述造成干扰.
2.could have done,might have done 是过去完成时态,不知你问的“可能性”是何意.
例如,Do not point me with a gun ever!I could have been killed.意思是"以后别在用枪指着我了,会出人命的!" 意思是point me with a gun 这件事情已经发生过了,所以才说那时候会差点没命.
但是如果说 Do not point me with a gun,I can be killed.是警告,point me with a gun这件事还没有发生,只是说可能会出人命而已.
3.过去时态用 could,might.例子:If it wasn't you,I could have finished my job by now.如果不是因为你,我现在应该已经完成工作了!
could 表示有这个能力;而这个句子之所以不用might have finished my job,是因为might表示的可能性太小,没有足够的说服力去职责别人.
再问: 他工作起来一定很认真 [表推测]怎么用
有must/could/can/may/maight have been done吗
can be done was done could be done must have been done will
have had can could may maight did在句子中的用法
A.must be B.may have been C.can have been D.could be ,为什么呢,
can could may maight 都可以表示猜测 时.
can could may maight 可能性由大到小是怎样的?
should/must/would/could/might/may have done的问题!
MUST have been done
must have been done must have done
need have done ,must have done ,can/could have done ,should
分析一下can may must could might could have
must have been done/must be done