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1.---Frank isn't in the house now.

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1.---Frank isn't in the house now.
---____ left by the back door?
A.Had he B.Must he have C.Should he have D.Could he have
2.I'm sorry ,but I must say his English still___.
A.need to be improved B.needs to improve C.needs to be improving D.needs improving
3.You'll like rhe new school.It ___ be a little small,I think ,but you'll get used to it soon.
A.could B.must C.shall D.should
4.When three pwople travel with me,there____ someone who ____be my teacher.
A.must have ,might B.must be,can C.may be,could D.may have ,may
5.---Mike must have known that.
----No,he ___.How ____ he?
A.mustn't,must B.may not,may C.couldn't,could D.needn't ,need
6.---Where's the knife?
---It ____ on the plate.I put it there just now.
A.could be B.may be C.would be D.should be
7.When she study at university,she ____ stay up very late,reading novels.
A.must B.could C.might D.would
8.The traffic signs show clearly that people ____ faster than speed limit.
A.do not drive B.will not drive C.may not drive D.might not drive
麻烦原因说的详细些,
1.---Frank isn't in the house now.
A D B D D D C D
这几题主要考的是情态动词
2 1 情态动词表示推测的用法
情态动词must,can,could,may,might都可用来表示推测
1.must所表示的可能性最大,最有把握,意为“一定”.
2.can和could主要用于否定句和疑问句中 ,can’t或couldn’t 表示“不可能”
3.may 和 might表示现在或将来可能发生的动作或情况,主要用于肯定句中,might相对于may 来说,
表示的可能性更小一些.
Tip:1).表示猜测,can/could一般不用于肯定句中,除非是“经验之谈”.
如:Anybody can make mistakes.
2).may和might都不用于疑问句中.
如:(正)Can /Could it be cloudy tomorrow
(误)May /Might it be cloudy tomorrow
4、should也可以用来表示“推测”,意为“可能;该”,
相当于be expected to.往往指具有一定的客观根据
或根据推理对现在某事发生的“可能性”进行描述,
语气上不如must强.
5、情态动词表示猜测时语气从强到弱的顺序是:must,should,can,may,could,might.