题目内容
19.---Why didn't you reared him of the possible danger?---But what otherwise?He never listens to me.( )
A. | could I do | B. | could I have done | ||
C. | should I do | D. | must I have done |
分析 -你为什么不告诉他可能的危险?-但是告诉他又能怎样?他从来不听我的.
解答 答案:B
句意表达的是相反假设,要用虚拟;句中otherwise相当于if I had reminded him of the the possible danger可知是和过去事实相反的虚拟语气,对过去的虚拟,主句要用情态动词加完成时态来构成,要排除A和C;must have done是对过去的事情的推测.故选B.
点评 虚拟语气是表示与事实相反的假设,构成方式有:对现在或将来,条件句中用一般过去时态,主语用情态动词加动词原形;对过去,条件句中用过去完成时态,主语用情态动词加完成时态.学习时,要牢记构成方式.
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