英语单选题What a pity!Considering his ability and experience,he _
英语单选题 What a pity!Considering his ability and experience,he _____better. A.can have done B.might have done 根据语义,这个空本可以填could have done ,可是没这个答案,于是我就选了A,可might have done 是表示可能已经做过某事,怎么也不能选这个啊
情态动词should ,would,could,might,ought to等后接不定式的完成时, 表示过去本该做,打算做,想做而未做的事情. should have done =ought to have done本应该做而没做 would have done = 本来就会去做某事而没做 could have done = 本可以做某事而没做 might have done本可以做而没做