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新初中英语语法知识—情态动词的知识点总复习附答案

一、选择题1.Since the road is muddy,it ________last night, ________?A.must be rained; wasn’t it B.must have rained; didn’t it C.must rained; didn’t it D.must have rained; wasn’t it 2.I’ve bought a nice necklace for Jo’s birthday. She _____like it, but I’m n ot sure. A.can B.may be C.might D.must 3.—________your house be cleaned right now?—No,it needn't.It may be cleaned this afternoon.()A.Must B.May C.Can4.A: Is Jim coming by train?B: I’m not sure. He _______ drive his car.A.must B.may C.need D.should 5.—I can't stop smoking, doctor.—For your health, I'm afraid you ________.A.must B.can C.may D.need 6.You __ drive your car so fast. It's very dangerous.A.wouldn't B.shouldn't C.couldn't D.mightn't 7.The milk tastes bad. You’d better_______.A.throw it away B.to throw it awayC.throw them away D.to throw them away8.He like coffee. I see him drink a cup at times.A.must B.may C.can’t D.mustn’t 9.We _______ keep the new traffic law and learn how to protect ourselves. A.may B.should C.can D.need 10.Since you are very tired, you ______ finish the work today.A.needn’t B.may not C.mustn’t D.can’t 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.-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 13.—Must I go out to have dinner with you, Mum?—No, you , my dear. You’re free to make your ow n decision.A.shouldn’t B.mustn’t C.needn’t D.can’t 14.(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.can15.— Must I go home? — No, you ________.A.can’t B.mustn’t C.don’t D.needn’t 16.—Must I sleep now? —No, you________.A.needn't B.mustn't C.can't D.may not 17.—Must I hand in my reports today?—No, you ________.A.mustn’t B.can’t C.shouldn’t D.don’t have to 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't19.— May I watch TV for a while?— No, you __________. You have to finish your homework first.A.can’t B.needn’t C.mustn’t D.won’t20.My head teacher has made a set of rules to show what we students ________ and ________ not do in class.A.must; must B.will; willC.need; need D.might; might21.—Could I call you by the first name?—Yes, you .A.will B.could C.may D.might22.— May I have some wine?— No, you . You have to drive home later.A.shouldn't B.needn't C.mustn't D.may not【参考答案】***试卷处理标记,请不要删除一、选择题1.B解析:B【解析】【分析】【详解】句意:由于道路泥泞,昨晚一定下雨了,是吗?考查情态动词表推测以及反意疑问句。

must have done表示对已发生事情的推测。

根据Since the road is muddy,可推测昨天晚上一定下雨了。

故第一个空应该填must have rained;陈述句谓语部分有“must have done”,而且有表示过去的时间状语last night,表动作,问句部分应该用didn't,第二个空格应该用didn’t。

故选B。

注意区分:must be一定是;can’t be不可能是;must have done sth一定做过某事(对已发生事情的推测)。

2.C解析:C【解析】【详解】句意:乔的生日我给她买了一条漂亮的项链。

她可能会喜欢,但是我不确定。

考查情态动词表示推测。

can表示能、可以;may表示可能,might是其过去式;must表示一定、必须。

根据题干中but I'm not sure.可知可能性较小的推测,则可用may或者might,B项中may后有系动词be,原句中有动词like,则只能用might。

故选C。

3.A解析:A【解析】【详解】句意:——你的房子必须现在打扫吗?——不,不必。

可以今天下午打扫。

考查情态动词辨析。

must 必须;may 可以;can 能。

根据下文回答needn't 不必,可知,上文的一般疑问句中用助动词must表示“必须”。

故选A。

【点睛】情态动词must表示“必须”,由must引起的疑问句中,肯定答语用must,否定答语用needn’t或don’t h ave to,表示“不必”。

4.B解析:B【解析】【详解】句意:——吉姆坐火车来吗?——我不确定,他可能开自己的车。

考查情态动词辨析。

A项,必须,一定,表示肯定推测;B项,也许,表示有可能;C项,需要;D项,应该。

根据回答部分I’m not sure.可知,此处并不确定吉姆是开车来还是乘坐火车来,所以此处是“可能”。

故选B。

【点睛】must意为“必须,应该”,可以表示主观上一定要做什么或者肯定推测。

例如:I must go home to look after my mum. This pair of shoes must be hers. may意为“可以,也许”,可以表示请求或者推测(无法断定)。

例如:May I come in? It may be hers,but I’m not sure. need意为“需要”,既是情态动词也是行为动词。

例如:You needn’t finish your homework right now. You need to tell him the truth. should意为“应该”,表示责任或者义务。

例如:You should finish practising playing the piano at first.5.A解析:A【解析】句意:——我戒不掉烟,医生。

——为了你的健康,恐怕你必须戒掉。

must必须;can 能,会;may可以;need 需要。

根据For your health,可知戒烟有利于健康,是必须的做的事,must表示必须的意思。

故选A。

6.B解析:B【解析】【分析】【详解】句意:你不应该开车这么快。

太危险了。

考查情态动词。

wouldn't不会;shouldn't不应该,表建议;couldn't不能,表不许可; mightn't不可能,表示否定性推测。

根据下文It's very dangerous.可知不应该开车这么快,故选B。

7.A解析:A【解析】【详解】句意:牛奶味道不好。

你最好把它扔掉。

考查had better和人称代词宾格。

throw away意为“扔掉”,根据所给空前面的had better后面接动词原形,排除B和D,由milk是不可数名词,所以用it来代指,排除C,故选A。

8.B解析:B【解析】【详解】句意:他可能喜欢咖啡。

我看见他有时喝一杯。

A. must必须;B. may可能;C. can’t不能;D. mustn’t禁止。

根据下文I see him drink a cup at times.可知上文是可能喝咖啡。

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