(易错题精选)初中英语语法知识—情态动词的技巧及练习题附答案解析(2)

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一、选择题

1.(2017·甘肃白银·10)—I wonder if these are Danny's glasses.

—They________be Danny's. He doesn't wear glasses.

A.can't B.must C.mustn't D.can

2.Look at the sign! It says “No Smoking!” You ________ smoke here. It’s dangerous.

A.mustn’t B.ought not to C.needn’t D.don’t have to

3.You have finished most of the work, so you ____ start working so early tomorrow. You may

come at 9 :00.

A.can't B.mustn't C.needn't D.couldn't

4.— Do you think it is safe to shop online?

— I think so. On Taobao, customers return goods with no questions asked,but they ______

pay delivery costs.

A.can’t; can B.must; must C.can; have to D.mustn’t; can

5.I hope you __________ to my birthday party.

A.to come B.can come C.comes D.are come

6.—Is Wendy in the classroom now?

—I’m not sure. She ________ be there. I saw her in the library ten minutes ago.

A.may not B.must not C.shall not D.would not

7.The designer has tried every possible way to make the robot light, so you _____ worry about

its weight.

A.must B.may C.can’t D.needn’t

8.—Is that cap Bob’s?

—No, it ________ be his. His is blue.

A.can’t B.mustn’t C.needn’t D.may not

9.The milk tastes bad. You’d better_______.

A.throw it away B.to throw it away

C.throw them away D.to throw them away

10.— I wonder if these are Jim's glasses.

—They _____his. He doesn't wear glasses.

A.might be B.could be C.can't be

11.—Jack must be in his office, I think.

—No, he be in the office. He flew to Canada this morning.

A.needn't B.shouldn't C.can't D.mustn't

12.I’m sorry, children over 1.4 meters________pay the full price for the show.

A.may B.must C.can D.ought to

13.— Must I finish the homework now?

— .You can do it later.

A.No, you needn’t B.Yes, you must C.No, you can’t

14.-_________ you help me with my homework?

-Of course if I __________.

A.Could; could B.Can't; can C.Could; can D.Can; could

15.—The food ________be delicious . You ate it up .

—You bet . My mum cooked it for me .

A.must B.may C.can D.need

16.— Will Jim come to Yangzhou for a holiday?

— He ________come, it depends on how much homework he will have.

A.may B.should C.must D.need

17.–Is Mike coming to the fashion show tomorrow?

--I’m not sure. He ______ not come.

A.must B.can C.may D.should

18.—Is Wilson on duty in class today?

—It________be him. It's his turn tomorrow.

A.must B.can't C.should D.needn't

19.Even the top student can't work out this problem, so it________ be too difficult.

A.must B.may C.can D.need

20.— Could you play the piano when you were 8 years old?

— ________.

A.Yes, I could B.No, I can’t C.Yes, I can D.No, I won’t

21.-Mum, must I stay there the whole day?

-No, you__________. You__________ come back after lunch, if you like.

A.mustn’t; can B.needn’t; must C.needn’t; may

22.You should________ the teacher________being late for school.

A.apology to, about B.apologize to, for

C.apologies to, for D.apologize to, on

【参考答案】***试卷处理标记,请不要删除

一、选择题

1.A

解析:A

【解析】

句意:----我想知道这些是丹尼的眼镜吗?-----他们不可能是丹尼的。他不戴眼镜。考查情态动词表推测。否定推测用can’t/couldn’t;肯定推测用must, may, might, must意思是“一定、准是”,语气较肯定,较有把握。may, might表示推测“可能性”时,意思是“可能”、“也许”,语气没有 must肯定。mustn't的意思禁止做某事。根据下文He doesn't wear glasses.

(他不戴眼镜。)可以推测这副眼镜不是丹尼的;结合句意和语境可知选A。

2.A

解析:A

【解析】

【分析】

【详解】

句意:看这个标志!上面写道“禁止吸烟!“你不能抽烟。这是危险的。mustn’t 禁止,不允许;ought not to不应该,不应当;needn’t不必;don’t have to不必。根据“No Smoking!”可知此处禁止吸烟,所以选A。

3.C

解析:C

【解析】

【详解】

句意:你已经完成了大部分工作,所以你明天不必这么早就开始工作。你可以9点来。

本题考查情态动词。can't不可能,mustn’t禁止,needn’t不必,couldn’t可能不。根据You

have finished most of the work可知,你已经完成了大部分工作,因此明天不必这么早就开始工作,因此用needn’t,故选C。

4.C

解析:C

【解析】

【详解】

句意:——你认为网上购物安全么?——我觉得是的。淘宝上,消费者可以无理由退货,但是他们要承担运费。

考查情态动词辨析。A. can’t; can不能,能;B. must; must必须,必须;C. can; have to可以,不得不;D. mustn’t; can禁止,能。根据句意表示的是顾客能退货,是可以,第一空用can;但是不得不承担运费,非主观情愿用have to。故选C。

5.B

解析:B

【解析】

【分析】

考点:考查动词。

【详解】

试题分析:句意:我希望你能来参加我的生日聚会。hope to do sth希望做某事;hope that从句,希望……。但不能说hope sb to do sth;从句主语you,所以谓语动词不能用comes单数形式;come是实意动词,前面不能用are;所以选B。

6.A

解析:A

【解析】

【详解】

句意:—温迪现在在教室吗?—我不确定。她可能不在那里,十分钟前我在图书馆见过她。

考查情态动词表推测。may not可能不;must not一定不要;shall not将不会;would not将要、会、就会,表示虚拟、假设、条件等。根据回答句“I’m not sure”,可推测后句应该是说:她可能不在那里。是对现在情况的推测,may not“可能不”。故选A。

7.D

解析:D

【解析】

【分析】

【详解】

句意:设计者已经尝试了所有可能的方法使机器变轻,所以你不必担心它的重量。must必须;一定;may可以;可能;can’t不能;不可能;needn’t不必,没有必要。根据句意The

designer has tried every possible way to make the robot light可知,设计者在努力使机器变轻,所以担心是没有必要的。故应选D。

8.A

解析:A

【解析】

【详解】

句意:——那顶帽子是Bob的吗?——不,那不可能是他的。他的是蓝色的。

考查情态动词表推测。can’t 不可能,否定推测;mustn’t 禁止,不表推测;needn’t 不需要;may not 可能不是,表不确定的推测。根据回答“No”和“His is blue.”可知这里说话者表达完全否定推测,故选A。

【点睛】

在情态动词表推测时,很多同学会搞混can’t和mustn’t,认为他们都表示完全否定的推测,在做题时容易误选。can’t 不可能,表示完全否定的推测,但是mustn’t 禁止,并不用于表推测。

9.A

解析:A

【解析】

【详解】

句意:牛奶味道不好。你最好把它扔掉。