摘要：3．- I use your pen?I've lost mine． -Of course．Here you are． A．Need B．May C．Must D．Should mustn't have done ／couldn't have done [问](1)I didn't see her in the meeting-room this morning．She at the meeting． A．mustn't have spoken B．shouldn't have spoken C．needn't have spoken D．couldn't have spoken 标准答案为D.难道不能选A吗? (2)-There were already five people in the car but they managed to take me as well． -It a comfortable journey． A．can't be B．shouldn't be C．mustn't have been D．couldn't have been 标准答案为D.难道不能选C吗? (3)Jack yet.otherwise he would have tele- phoned me． A．mustn't have arrived B．shouldn't have arrived C．can't have arrived D．need not have arrived 上海高考.97-19) 答案为C.能否选A呢? (4)My sister met him at the Grand Theatre yesterday afternoon.so he your lecture． A．couldn't have attended B．needn't have attended C．mustn't have attended D．shouldn't have attended 答案为A.能否选C呢? [答]上面的试题已不符合现代英语.尤其是美国英语的实际使用情况.应当改进.有充分的资料证明mustn't have done也可以用来表示"推测过去不可能发生某事".例如:

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