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题目
题型:不详难度:来源:
You __________ buy a gift, but you can if you want to.
A.mustB.mustn’tC.have toD.don’t have to

答案
D
解析

试题分析:句意为,你不必买礼物了,但是如果你愿意的话也可以买。根据句意可知此处须用否定形式,故排除A、C项;mustn’t 表示禁止;don’t have to 意为“不必……”,故选D。
点评:情态动词有具体的词义,但也同助动词一样,需要与其他词语一起构成句子的谓语,另外情态动词没有人称和数的变化,情态动词后必须跟动词原形。
核心考点
试题【You __________ buy a gift, but you can if you want to.A.mustB.mustn’tC.have toD.】;主要考察你对动词的分类等知识点的理解。[详细]
举一反三
House owners        keep their gardens in a neat and orderly state according to the regulations.
A.mayB.wouldC.canD.shall

题型:不详难度:| 查看答案
— I want to know if I        smoke here.
— No, you       . Could you see the sign “NO SMOKING” there?
A.can; needn’tB.must; can’tC.shall; won’tD.may; mustn’t

题型:不详难度:| 查看答案
I talked for a long time, and in the end I_____ make her believe me.
A.shouldB.can C.was able to D.must

题型:不详难度:| 查看答案
I told Sally how to get here, but perhaps I ______for her.
A.had to write it outB.must have written it out
C.should write it outD.ought to have writte it out

题型:不详难度:| 查看答案
She ______have stopped her work halfway.
A.ought to notB.ought not to
C.not ought toD.does not ought to

题型:不详难度:| 查看答案
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