A. wouldn' t B. mustn' t
C. needn' t
D. may not
1.B解析:本题考查情态动词的用法。由题干设置的语境可知该句为含有主语的祈使句,全文使用了命令的口吻,故须用mustn’t表示“一定不要”。
2. (延边F) (典型例题精选)I
have been more than six years old when the accident happened.
A. shouldn' t
B. couldn' t
C. mustn' t
D. needn' t
2.B
解析:本句意为“当那次事故发生时,我可能还没有6岁。”故只有could才能达意。
3
(延边F) (典型例题精选 ) He
have completed his work ; otherwise, he wouldn' t be enjoying himself by the sea side.
A. should
B. must
C. wouldn' t
D. can' t
3.B
解析:本题考查must对过去推测的用法,应用must have done结构表示过去一定做了某事,而should have done表示过去应该做而没做。
4
(延边F) (典型例题精选)—Do you know where David is? I couldn't find him anywhere.
—Well. He
have gone far.
— His coat's still here.
A. shouldn' t B. mustn' t
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