Peter loos very upset.Anything wrong?He_____in the exam.It was very difficultA.should have failed B.must have failed C.should fail D.must fail
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Peter loos very upset.Anything wrong?He_____in the exam.It was very difficult
A.should have failed B.must have failed C.should fail D.must fail
选B:must have done 表示对过去发生行为的推测,意思是“一定,准是”,只用于肯定句中.本题中,根据
.It was very difficult(考试很难)可知,他准是挂科了.
A选项,shoud have done 对过去应该做而没有做的行为的责备.本该...(实际上没做)如:You should have been here ten minutes ago.
你本应该10分钟之前来到这.(实际上没有)
C项 表示"义务,责任" 意思是“应该”
D项 不能表示对过去行为的推测
D.
B 彼得看上去很难过,有什么事吗?他一定考试没有及格。考试很难。must have done sth 表示一定发生了某事,说话人语气比较肯定。
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