If you           spit at all, please spit in the bucket(痰孟里)providedA.mustB.shal

If you           spit at all, please spit in the bucket(痰孟里)providedA.mustB.shal

题型:不详难度:来源:
If you           spit at all, please spit in the bucket(痰孟里)provided
A.mustB.shallC.should D.may

答案
A
解析

试题分析:must 表必须,一定;shall表法律,条文规定的必须;should 应该;may可能,结合句意:如果你一定要吐痰,请吐在所给的痰盂里。故选A.
点评:情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语, 只能和其他动词原形构成谓语。can (could) 表示说话人能,可以,同意,准许,以及客观条件许可;will, would用于疑问句表示说话人向对方提出请求或询问,用 would 比 will 更婉转,客气。Shall, should表示命令,警告,允诺,征求,劝告,建议惊奇。
举一反三
— Li Fan won the first prize in the national physics competition.
— I ________ he was the winner.
A.shouldn’t have thoughtB.must have thought
C.need have thoughtD.could never have thought

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--We need a person very much to think up a creative idea.
--________ the new manager have a try?
A.ShallB.MustC.ShouldD.Need

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The winner of the race is tall and thin; he _______ be my friend, Mike, who is short and fat.
A.mightB.mustn’tC.can’tD.should

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【There’s a lot of water on the ground; the water pipe _____ be repaired.
A.canB.ought toC.willD.may

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--- I haven’t got the reference book yet, but I’ll have a test on the subject next month.
--- Don’t worry. You _______ have it by Friday.
A.couldB.shallC.mustD.may

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