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语法知识—情态动词的知识点总复习附答案

一、选择题1.—______ you please tell me something about the life in Canada or America?—Sorry, I______. I don’t know either. I’m from Australia.A.Could; couldn’t B.Can; couldn’t C.Could; can’t D.Can; mustn’t 2.Since you are very tired, you ______ finish the work today.A.needn’t B.may not C.mustn’t D.can’t3.—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 4.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’t5.All passengers_____ go through safety check before they take a plane.A.may B.can C.must D.need6.A: Is Jim coming by train?B: I’m not sure. He _______ drive his car.A.must B.may C.need D.should 7.—Jenny, you _________ push your way onto the bus.—I’m really sorry about it.A.mustn’t B.needn’t C.may not8.From March 23rd, 2013, anyone under the age of 14 ________ go into Disneyland alone. A.couldn’t B.mustn’t C.needn’t D.mightn’t 9.—Can I take some milk and biscuits to the reading room?—No, our school has a rule that students _______ eat or drink there.A.can’t B.mustn’t C.needn’t D.may not 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 be11.—How nice the building is! What is it for? —It ________ a hotel. But I’m not sure. A.must be B.have to be C.may be D.can be12.—________ David be the new chairperson of the Students’ Union?—He _______ be, but I’m not sure.A.Can; can’t B.Can; mayC.May; must D.May; mustn’t13.—Sorry, Ms Wang. I left my homework at home. Must I hand it in today?—No, you_______ . You_______ bring it here tomorrow.A.mustn’t; should B.needn’t; must C.mustn’t; may D.needn’t; c an 14.The milk tastes bad. You’d better_______.A.throw it away B.to throw it awayC.throw them away D.to throw them away15.Since the road is muddy,it ________last night, ________?A.must be rained; wasn’t it B.must have rained; didn’t itC.must rained; d idn’t it D.must have rained; wasn’t it16.This book _____ Lucy’s. Look! Her name is on the book cover.A.must be B.may be C.can’t be D.mustn’t be 17.The flowers ________ every day, or they will die.A.must water B.can be wateredC.should water D.must be watered18.-_________ you help me with my homework?-Of course if I __________.A.Could; could B.Can't; can C.Could; can D.Can; could 19.Everyone______ be polite to their parents.A.could B.may C.should D.can20.一Hurry up, Mark! Let's cross the road as quickly as possible.一No,you . Don't you see the light is still red?A.couldn't B.wouldn't C.mustn't D.needn't 21.—We've prepared all kinds of foods for the picnic.—Do you mean I___ bring anything?A.can't B.needn't C.mustn't D.won't 22.—Tom, we’re goin g shopping at eight, right?—Yeah, but I ______ be a little late, so don’t wait for me.A.may B.should C.mustn’t【参考答案】***试卷处理标记,请不要删除一、选择题1.C解析:C【解析】【详解】句意:——你能告诉我一些在加拿大或者在美国的生活吗?——抱歉,我不知道,我来自澳大利亚。

could可以是can的过去式,但是在位于句首表示请求对方做某事的时候,表示礼貌而非过去时态。

can表示能力,表示能够做某事。

在空格一中,表示礼貌请求对方做某事,用could表示委婉语气;空格二中can’t表示回答者做不到,因为回答者来自澳大利亚而非加拿大或者美国。

故选C。

2.A解析:A【解析】【详解】句意:既然你很累,今天就不必完成这项工作了。

A. needn’t不必;B. may not 可能不;C. mustn’t禁止;D. can’t不能。

根据上文Since you are very tired,可知,情态动词needn’t表示不需要,后面直接加动词原形。

根据题意,故选A。

3.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。

4.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。

5.C解析:C【解析】【详解】句意:所有乘客在乘坐飞机前必须经过安全检查。

考查情态动词辨析。

may可以,表许可或请求;can能,表能力或许可;must必须,指一定;need需要,指有必要。

根据句意语境可知,安检强调“必须,一定”,故选C。

6.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.7.A解析:A【解析】【详解】句意:——Jenny,你一定不要挤上公共汽车。

——对此我真的很抱歉。

考查情态动词。

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