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
人气：332 ℃ 时间：2019-09-27 20:20:21
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……
