易错易混情态动词专项练
1．—________ I take a photo
—Sorry, you can’t. It’s not allowed here.
A．Must B．May C．Need D．Should
2．—Look! That is Nancy.
—That ________ be her. She has gone to Yunnan with her family.
A．might B．can’t C．must D．could
3．We have rules in the classroom. We must ________ or write on the desks and chairs.
A．draw B．to draw C．not draw D．not to draw
4．You ________ finish your homework on time. Or the teacher will be angry.
A．can B．may C．should D．would
5．Jim is often told that books and friends ________ be few but good.
A．should B．can C．might D．must
6．In the library you ________ draw or write in the books, or you will be fined.
A．mustn’t B．needn’t C．wouldn’t D．couldn’t
7．—Must I stay here and wait for you
—No, you ________. You can go home now.
A．needn’t B．can’t C．mustn’t D．shouldn’t
8．—Whose T-shirt is this
—It ________ be John’s. It’s ________ small for him．
A．can’t; much too B．can’t; too much
C．mustn’t; much too D．mustn’t; too
9．Lucy ________ play the violin very well and she has won many prizes.
A．can B．may C．need D．might
10．You ________ mind your manners when you are introduced to seniors in Japan.
A．can B．may C．need D．should
11．You’d better _________ this computer. It is a personal one.
A．not to use B．not use C．not using
12．—Listen. Is Mike playing the piano
—No. it ________ be him. He has gone to Beijing.
A．may not B．can’t C．mustn’t D．couldn’t
13．In the library, you ______ write in the books, or you will be fined.
A．needn’t B．wouldn’t C．mustn’t D．couldn’t
14．—Mom, it is so hot! Can I take the helmet（头盔）off
—Oh, dear, everyone ________ wear it. Safety comes first.
A．must B．can C．may
15．We ________ drink and drive. It’s against the law.
A．mustn’t B．needn’t C．wouldn’t D．couldn’t
16．—Is Lily playing basketball there
—It ________ be her. She went to the teacher’ office just now.
A．needn’t B．may not C．mustn’t D．can’t
17．It looks like rain. You ________ water the plants in the garden any more.
A．mustn’t B．can’t C．shouldn’t D．needn’t
18．In Changchun, the drivers ________ let the pedestrians （行人）go first.
A．can B．may C．must D．need
19．—Is that Tom over there
—It ________ be him. He is on the plane to Chengdu now.
A．can’t B．mustn’t C．may not D．must
20．—Is the man in a white shirt Roy
—It ________ be him. Roy has gone to Xi’an to attend an international meeting.
A．must B．can’t C．might
21．—Must I come here at 6:00 tomorrow morning
—No, you ________. You can come one hour later.
A．can’t B．needn’t C．mustn’t D．may not
22．Safety comes first. Everyone on the coach ________ wear the seat belt.
A．can B．can’t C．must D．mustn`t
23．—Do you have any plans for this summer vacation
—I’m not sure. I ________ go to Qingdao.
A．should B．must C．can D．may
24．— Not having enough money, we ________ afford to go abroad this summer.
—What a pity!
A．shouldn’t B．mustn’t C．can’t D．needn’t
25．—Many people play with mobile phones all day instead of reading books.
—That’s too bad. Everyone ________ be a book lover. Reading is more enjoyable.
A．could B．should C．would
参考答案：
1．B
考查情态动词。must必须；may可以；need需要；should应该。根据“Sorry, you can’t”可知此处表示请求允许，用may。故选B。
2．B
考查情态动词。might可能；can’t不能；must必须；could可以。根据“That ... be her. She has gone to Yunnan with her family.”可知，Nancy和家人去了云南，因此现在看到的那个不可能是Nancy。故选B
3．C
考查情态动词后加动词原形的用法和否定句。情态动词must后应加原形动词draw，排除B和D；根据“We must...or write on the desks and chairs.”和选项可知，在课桌和椅子上画画或写字都是不对的，所以我们不能这么做，情态动词must后应加not表否定。故选C。
4．C
考查情态动词。can能够；may可能；should应该；would会、愿意。根据“Or the teacher will be angry.”可知，此处在给建议。给建议时通常使用should“应该”。故选C。
5．A
考查情态动词。should应该；can能，会；might可以；must必须。根据“books and friends…be few but good”可知，这里是指书和朋友应该少而精，故选A。
6．A
考查动词辨析。mustn’t禁止；needn’t不必；wouldn’t不会；couldn’t不可能。根据“or you will be fined.”可知，是禁止在书上画画或写字。故选A。
7．A
考查动词辨析。needn’t不需要；can’t不能；mustn’t禁止；shouldn’t不应该。根据“Must I stay here and wait for you ”可知，用情态动词must提问，其否定回答应用needn’t表示“不需要”。 8．A
考查情态动词和短语辨析。can’t“不可能”；mustn’t“不准”；much too“实在太”，修饰形容词或副词；too much“太多”，修饰不可数名词或动词；too“太”，修饰形容词或副词。所以第二空用much too或too修饰形容词small。根据“It’s much too small/too for him”可知，这件T恤太小，不可能是约翰的，所以第一空用can’t。故选A。
9．A
考查情态动词。can能够；may可能，也许；need需要；might可能。根据“she has won many prizes”可知能把小提琴拉得很好，表示能力用can。故选A。
10．D
考查情态动词。can可以；may可能；need需要；should应该。根据“when you are introduced to seniors in Japan”可知讲当你在日本被介绍给老年人时，应该怎么做，用should。故选D。
11．B
考查had better的用法。had better not do sth“最好不要做某事”，故选B。
12．B
考查情态动词辨析。may not可能不；can’t不可能，用于现在时。mustn’t禁止；couldn’t不可能，用于过去时。根据“Is”可知，是对现在情况的推测，根据“He has gone to Beijing.”可推知，那不可能是Mike。can’t表示有把握的否定推测，故选B。
13．C
考查情态动词辨析。needn’t不必；wouldn’t不会；mustn’t禁止；couldn’t不可能。根据“or you will be fined.”可知，是禁止在书上画画或写字。故选C。
14．A
考查动词辨析。must必须；can可以；may可能。根据“Safety comes first.”可知，安全第一，说明每个人都必须带头盔，应用情态动词must表示“必须”。故选A。
15．A
考查情态动词辨析。mustn’t禁止，不允许；needn’t没必要；wouldn’t不会；couldn’t不能。根据“It’s against the law.”可知，酒后驾车是被禁止的，故选A。
16．D
考查情态动词表推测。needn’t不需要；may not可能不；mustn’t禁止；can’t不可能。根据“She went to the teacher’ office just now.”可知莉莉刚才去了老师办公室，所以打篮球的不可能是她，表示否定的有把握的推测用can’t。故选D。
17．D
考查动词辨析。mustn’t禁止；can’t不能；shouldn’t不应该；needn’t不需要。根据“It looks like rain.”可知，要下雨了，所以不需要浇水。故选D。
18．C
考查情态动词辨析。can能；may可以；must必须；need需要。根据“let the pedestrians （行人）go first”可知此处是道路法规，司机必须让行人先走。故选C。
19．A
考查情态动词辨析。can’t不可能；mustn’t禁止；may not可能不；must一定。根据“He is on the plane to Chengdu now”可知，那个人不可能是汤姆，表否定推测用can’t，故选A。
20．B
考查情态动词词义辨析以及用法。must必须，一定；can’t不能，不可能；might可能。根据答语中“Roy has gone to Xi’an to attend an international meeting.”可知，罗伊已经去西安，所以可以推断穿白衬衫的人“不可能”是罗伊。can’t意为“不可能”，表示有把握的否定推测，此句就是有把握的否定推测。故选B。
21．B
考查情态动词。can’t不能；needn’t不必；mustn’t禁止；may not可能不。Must开头的一般疑问句，否定回答用“No, 主语+needn’t.”，表示“不，某人不必”。故选B。
22．C
考查情态动词。can能，可以；can’t不能，不会；must必须；mustn’t禁止，不能。根据“Safety comes first”和“wear the seat belt”可知，安全最重要，故必须系好安全带。故选C。
23．D
考查情态动词的用法。should应该；must必须；can能；may可能。根据“I’m not sure.”可以知道，我不确定，只能用may。
24．C
考查情态动词。shouldn’t不应该；mustn’t禁止；can’t不能；needn’t不必。根据“Not having enough money”可知，没有足够的钱，我们不能出国。
25．B
考查情态动词。could可能；should应该；would将要。根据“Everyone…be a book lover. Reading is more enjoyable.”可知读书更令人愉快，所以这里应说每个人都应该是一个爱书者，所以这里用should。
