区别could,might,would,should have done

区别could,might,would,should have done
作为虚拟语气could have done,might have done,would have done,should have done怎么区别
其他人气:987 ℃时间:2019-09-27 20:20:21
优质解答
要结合原形词义来理解
Can: 能……
Will:将/会……
Shall:应/应该……
May:也许……
肯定成份依次减弱,may是最不确定的语气.在虚拟语气里也是一样.
Could have done: 本来能……
Would have done:本来会……
Should have done:本来应该……
Might have done:本来也许……
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