高考英语情态动词真题汇编(含答案)及解析

高考英语情态动词知识点真题汇编及答案解析一、选择题1．Skills like critical thinking and analysis ________ be found on the Internet, because they must be acquired in the context of facts.A．can’t B．needn’t C．mustn’t D．shouldn’t 2．Schools have been lengthening the school day to raise test marks, which ________ be costly if schools need air conditioning on hot days.A．might B．can C．dare D．need3．Tourists who enter the quiet area _____ obey the rule to reduce any potential effect on the environment.A．can B．may C．shall D．dare4．——I called you last night, but no one answered.——Sorry, I____________ sleeping.A．need have been B．would have been C．must have been D．should have been 5．You ______ feel all the training a waste of time, but I'm a hundred percent sure later you'll be grateful you did it.A．may B．can C．should D．would6．They worked hard day and night during the next ten years ________ they ________ pay for the lost necklace.A．so…would B．so that…would C．in order that…could D．and…would7．---We want someone to design the new art museum for me.---_____ the young fellow have a try?A．Shall B．May C．Will D．Need8．His opinion was shared by Chinese director Feng Xiaogang.“Some young actors are feminine （女性化的）and they _____ be more manly,” he said during the Shanghai International Film Festival in June 2017.A．can B．must C．may D．should9．For all of the diligent students here, I give you my promise: Work hard, and you ________ be rewarded!A．can B．need C．shall D．could10．Home is not just the place where you grow up. It ________ be a warm smile, a sincere hug, and a shoulder for you to cry on.A．must B．can C．will D．should 11．According to the regulations, anyone who has the intention to be a teacher _______ pass a series of demanding tests.A．can B．would C．might D．shall12．—I can’t think why he________ so angry. I mean no harm.—It’s typical of him to be sensitive(敏感的).A．should have been B．must have beenC．might have been D．can have been13．Peter searched all the places where he________have left her iPad but it was all in vain.A．might B．would C．must D．should 14．—Sorry, Mum! I failed the job interview again.—Oh, it's too bad. You________ have made full preparations.A．must B．can C．would D．should15．—Is Robert coming by coach?—He should, but he ___________ not. He likes driving his car.A．may B．could C．need D．must16．Mary is a bit shy and ____ a speech in public, which makes her lose the precious chance to do the voluntary job.A．dares not make B．doesn’t dare makeC．dare not to make D．dares not to make17．Louis Cha (金庸) passed away. As for his achievement, there is such a comment, “He ______ the Nobel Prize for Literature with his written works translated into English.”A．could have been rewarded B．must have been rewardedC．should be rewarded D．need have been rewarded18．He ______ writing the pa per now. He hadn’t written a single word when I left him ten minutes ago.A．shouldn’t be B．can’t have finishedC．can’t be D．mustn’t have finished19．The weather turned out to be fine yesterday. I ____________ the trouble to carry my umbrella with me.A．should have taken B．could have takenC．needn’t have taken D．mustn’t have taken20．You _________ me about it earlier, but you didn't.A．should have told B．would have toldC．must have told D．should tell21．Tom told us that he ______ come to the party tonight, b ut he wasn’t sure about this.A．will B．would C．could D．might 22．—Jane, why don’t you take a bite of the chocolate?—Well, I am on diet, if you __________know.A．must B．shall C．would D．could23．—Is there a holiday recently?—There_____ be. It has been informed that we will continue to study for another three weeks. A．won’t B．mustn’t C．may not D．can’t24．As you worked late last night, you __________ have come this morning.A．may not B．can’t C．mustn’t D．needn’t25．--Is Jack still in hospital?--Yes. He _________ the bad food.A．wouldn’t eat B．shouldn’t eatC．wouldn’t have eaten D．shouldn’t have eaten【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】【详解】考查情态动词词义辨析。

高中英语情态动词形式练习题40题含答案解析1.She is very quiet. She ____ be shy.A.mustB.canC.mightD.should答案解析：C。

must 表示肯定的推测，语气非常强；can 表示可能性，但在这个语境中不太符合；might 表示可能性较小，符合“她很安静”这个描述推测她可能害羞；should 表示应该，不符合推测的意思。

2.The book is missing. Someone ____ have taken it.A.mustB.canC.mightD.should答案解析：A。

书不见了，一定是有人拿走了，must 表示肯定的推测，语气很强。

can 和might 语气较弱；should 表示应该，不符合语境。

3.He is always late. He ____ be very disorganized.A.mustB.canC.might答案解析：A。

他总是迟到，肯定是非常没有条理，must 表示肯定的推测，语气强。

can 和might 可能性较小；should 表示应该，不合适。

4.The lights are on. Someone ____ be at home.A.mustB.canC.mightD.should答案解析：A。

灯亮着，肯定有人在家，must 表示肯定的推测，语气强。

can 和might 可能性较小；should 表示应该，不符合语境。

5.The test was very difficult. She ____ have passed it.A.mustB.canC.mightD.should答案解析：C。

考试很难，她可能通过了，might 表示可能性较小。

must 语气太强；can 表示可能性，但不太符合这个语境；should 表示应该，不符合推测的意思。

6.He looks very tired. He ____ have worked hard.A.mustB.canD.should答案解析：A。

高考英语情态动词知识点解析含答案一、选择题1．—Life ____ be very hard for people living in the north of Canada as it is very cold there in winter.—Yes, the weather there _____ be as low as 60℃ below zero.A．must; can B．shall; must C．will; should D．has to; can 2．—Look at thes e tracks. It ________ be a wolf. I’m sure about it.—You are right! We have to be careful.A．may B．must C．can’t D．shouldn’t3．His opinion was shared by Chinese director Feng Xiaogang.“Some young actors are feminine （女性化的）and they _____ be more manly,” he s aid during the Shanghai International Film Festival in June 2017.A．can B．must C．may D．should4．For all of the diligent students here, I give you my promise: Work hard, and you ________ be rewarded!A．can B．need C．shall D．could5．Home is not just the place where you grow up. It ________ be a warm smile, a sincere hug, and a shoulder for you to cry on.A．must B．can C．will D．should6．She is shy and ________ the teacher’s question.A．dares not answer B．doesn’t dare to answerC．dare not to answer D．dares not to answer7．You ________ be Carol. You haven’t changed a bit after all these years.A．must B．can C．will D．shall8．--Is Jack still in hospital?--Yes. He _________ the bad food.A．wouldn’t eat B．shouldn’t eatC．wouldn’t have eaten D．shouldn’t have eaten9．I ______my examination easily but I made too many stupid mistakes.A．should pass B．could have passedC．had passed D．must have passed10．Skills like critical thinking and analysis ________ be found on the Internet, because they must be acquired in the context of facts.A．can’t B．needn’t C．mustn’t D．shouldn’t 11．Hurry up! Tom _______ for us at the gate.A．must wait B．must be waitingC．can be waiting D．must have waited12．I can’t thank you more, Tony. But for your timely warning, I into great trouble yesterday. A．had got B．got C．would have got D．would get 13．You ___________ a better mark, but you didn’t work hard.A．could have had B．would have had C．must have had D．must have14．He did not regret saying what he did but felt that he _________ it differently.A．could express B．would expressC．could have expressed D．must have expressed15．There are still 30 minutes ____, so we ____ hurry with lunch.A．going…needn’t B．to leave…don’t need C．leaving…needn’t to D．to go…needn’t16．—You look so tired. You________ late last night.—Yes. I had to to do an important report and stayed up till I completed it.A．should sleep B．must sleepC．should have slept D．must have slept17．(2018·天津) I can't find my purse. I___________ it in the supermarket yesterday, but I'm not sure.A．should leave B．must have leftC．might leave D．could have left18．The weather turned out to be fine yesterday. I ____________ the trouble to carry my umbrella with me.A．should have taken B．could have takenC．needn’t have taken D．mustn’t have taken19．Helen________ go on the trip with us, but she isn’t quite sure yet.A．shall B．may C．must D．can20．—Do you know where David is? I couldn’t find him anywhere.— Well. He ________ have gone far — his coat is still here.A．shouldn’t B．mustn’t C．can’t D．wouldn’t21．— Did Bob take the job in the supermarket? — No, but I think he _________.A．will have B．may have C．should have D．must have 22．We lost our way in that small village, otherwise we ________more places of interest yesterday.A．visited B．had visitedC．would visit D．would have visited23．He plays basketball very well. He_________ it a lot.A．may practise B．must practiseC．must have practised D．should have practiced24．I____________ go to a summer camp during the summer vacation, but I am not sure. A．might B．can C．must D．need25．It ___________ last night, for the road was very muddy.A．would have rained B．must have rained C．should have rained D．must rain【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】【详解】考查情态动词。

【英语】高三英语情态动词各地方试卷集合汇编含解析一、单项选择情态动词1．Most of the top leaders expressed a common desire at the UN conference, ______ that different cultures ______ coexist with tolerance.A．the one ; must B．the one ; should C．one ; must D．one ; should【答案】D【解析】【详解】考查替代和情态动词。

句意：大多数高层领导人在联合国大会上表达了一个共同的愿望，即不同的文化应该与宽容共存。

大多数高层领导人在联合国大会上表达了一个共同的愿望，即不同的文化应该与宽容共存。

替代表泛指的单数名词，通常用one替代。

此处用one替代前面的a desire，是同位语；结合句意第二空用情态动词should“应该”。

故选D。

【点睛】that ,it ,one 代指前面的名词时的用法1.one 指代前面出现的可数名词，是泛指。

可以和冠词连用，也可以有自己的定语。

一般不能用做特指，但和定冠词连用时可以是特指。

如： Please show me the cup, the red one on the shelf.2.It 指代前面提到的单数名词，相当于the one。

当one是泛指的时候，指的是同名异物，it是指同一物体.如： ----Do you want the cup ? ---Yes ,I want it.3.that通常用来代替前面出现的可数名词\不可数名词,主要是用来避免重复。

如： The weather of Guangzhou is hotter than that of Beijing.2．---Can I pay the bill by credit card?---Sorry, sir. But it is the management rules of our hotel that payment ______________ be made in cash.A．shall B．needC．will D．must【答案】A【解析】【详解】考查情态动词词义辨析。

（带答案）高考英语词法之情态动词典型例题及答题技巧单选题1、Since the road is wet this morning, it________ last night.A．must rainB．must be rainingC．must have rainedD．must have been rained2、My umbrella is gone. Who ______________ have taken it by mistake? A．couldB．shouldC．wouldD．must3、Someone_________my umbrella.I found it wet.A．should have usedB．can't have usedC．must have usedD．could have used4、It ___________ last night, for the road was very muddy.A．would have rainedB．must have rainedC．should have rainedD．must rain5、—It’s really great to have a computer to store my photos.—Don’t count on it too much. It ______ break down and you’d better make a copy of them. A．mustB．canC．shouldD．need6、—Must I finish the paper today?— No, you _________.A．mustB．needC．couldn’tD．don’t have to7、“The interest be divided into five parts, according to the agreement made by both sides,” declared the judge.A．mayB．canC．mustD．shall8、You ________ worry about him. He will get well soon.A．needn'tB．can'tC．mustn'tD．may not9、—Must we hand in our homework now?—No, you_____. You may give it to me tomorrow.A．needn’tB．mustn’tC．can’t10、---I think you ______ there in person; a phone call would have been fine.---It’s OK and I was so glad to have seen your mum.A．couldn’t have beenB．shouldn’t beC．needn’t have beenD．wouldn’t be11、—Did you attend the meeting for the experiment project yesterday?—Yes, but I don’t think I ____ because m y director was there.A．need to haveB．need toC．needed toD．need have12、I’m surprised that he ________ in the match.A．should failB．should have failedC．would have failedD．may have failed13、Our English teacher is considerate，helpful，and warm-hearted，but sometimes she________________ be angry at our silly mistakes.A．shouldB．mustC．canD．shall14、Chris ________ go to the opera on Sunday because he is going to have a meeting.A．can’tB．mightC．mustn’tD．should15、My key isn’t in my back pack. Where on earth________ I have put it? A．canB．wouldC．shouldD．must16、---You ________ here all the way through the thick snow last night .There was nothing important.---Yes, but I didn’t know.A．didn’t need to comeB．don’t need to comeC．needn’t have c omeD．needn’t come17、According to the regulations, anyone who has the intention to be a teacher _______ pass a series of demanding tests.A．canB．wouldC．mightD．shall18、The girl _________ out alone at night.A．dare not goB．dare not to goC．dares not goD．not dare go19、He ______ be in the house. Look, that is his car!A．canB．can’tC．mustD．mustn’t20、— Professor, we need to talk about it now!—I’ m busy. If you _____ talk about it with me, please wait till I finish my work at hand. A．canB．mayC．mustD．should21、The designer has tried every possible way to make the robot light, so you_______worry about its weight. A．mustB．mayC．can'tD．needn't22、—Listen ! Helen is singing in the next room.—It be Helen. She has gone to Beijing.A．can’tB．mustn’tC．mayD．should23、She ________ return the book next week. I’m not sure.A．mayB．mustC．shouldD．would24、---Good morning. I’ve got an appointment with Miss Smith in the Personnel Department.---Ah, good morning. You be Mrs. Peters.A．mightB．mustC．wouldD．should25、Whatever_______happen,we are not going to give up our determined plan. A．mayB．mustC．canD．should26、You ________ be hungry after all that long walking.A．mightB．mustC．couldD．need27、Occasionally, small asteroids strike Earth. These cause little damage. Major collision, such as the one that_________ the dinosaurs, occur rarely--perhaps only once every 100 million years.A．may have killedB．should have killedC．must have killedD．could have killed28、—What is an ideal team leader like?—He ________ be responsible, determined and creative.A．canB．mayC．wouldD．should29、Reading a large number of books ________ make us wiser.A．shouldB．canC．needD．must30、It _____ have rained last night, because the ground is wet now. A．couldB．shouldC．mustD．need31、How fantastic his spoken English is! He_____ abroad for several years.A．may stayB．must have stayedC．can stayD．must have been staying32、You ________ walk on the wet hill path because you ________ fall and hurt yourself.A．must; might notB．mustn’t; mightC．needn’t; needD．must; must33、Tourists who enter the quiet area _____ obey the rule to reduce any potential effect on the environment.34、---Must I finish the work before you leave?---No, you ________. You can leave it tomorrow.A．must’ tB．needn’tC．ought not toD．won’t35、—Make sure that the door is fastened you go to bed.—But the door just ________close.A．while；doesn’tB．before；won’tC．after；won’tD．during；doesn’t36、—Excuse me, but I want to use your computer to type a report.—You _____ have my computer if you don’t take care of it.A．shan’tB．might notC．needn’tD．shouldn’t37、You ______ have carried all these parcels yourself. The shop would have delivered them if you had asked them. A．may notB．needn'tC．can'tD．mustn't38、He had known the matter before you told him, so you _________ have told it to him.A．mustn'tB．can'tC．needn'tD．shouldn't39、Life is unpredictable; even the richest ______ become the poorest. A．shallB．mustC．needD．might40、His opinion was shared by Chinese direc tor Feng Xiaogang.“Some young actors are feminine（女性化的） and they _____ be more manly,” he said during the Shanghai International Film Festival in June 2017. A．canB．mustC．mayD．should41、—Look, the boy is crying sadly.—Yes. From my point of view, his mother ________ not have punished him so severely.42、—That important document is nowhere to be seen.—Don't worry! You ___________ it somewhere. Calm down and think it over.A．might leaveB．might have leftC．should leaveD．should have left43、Linda__________go to see Jay Chou's performance this weekend, but it all depends on whether she can finish the task before Friday.A．mightB．mustC．needD．can .44、Sometimes it seems that doors ___________ be closed for you, but remember, they are not all locked. A．mustB．shouldC．mayD．need45、I ______ my friends and relatives during the Spring Festivals, but I had to stay home because of COVID-19 outbreak.A．should visitB．might visitC．would have visitedD．must have visited（带答案）高考英语词法之情态动词_00A参考答案1、答案：C解析：考查情态动词+have done结构。

【英语】高三英语专题汇编情态动词(一)含解析一、单项选择情态动词1．One of our rules is that every student _______ wear school uniform while at school. A．might B．couldC．shall D．will【答案】C【解析】【详解】考查情态动词辨析。

句意：我们其中一条规则要求每个学生在校期间都要穿校服。

shall可以表示“命令，警告，强制要求；允诺；法律，规定要做……”，结合句意可知C正确。

2．According to a newly released regulation on online video services, no one _____ generate, release or spread fake news or information by using such technologies.A．can B．shall C．will D．may【答案】B【解析】【详解】考查情态动词。

句意：根据最新发行的关于网络视频服务的规章，任何人都不可以使用此类技术生成、发行或者传播虚假消息。

A. can 能够，有时会；B. shall 一三人称表示征求对方意见；二三人称陈述句，表示允诺、威胁、恐吓或法律条文的规定。

C. will 意愿；D. may 也许，可能。

根据前面的regulation（规定）可知，本题选shall更加合理。

故选B。

3．We ________ take clean drinking water for granted. One day we may run out of it. A．needn't B．can'tC．won't D．shouldn't【答案】D【解析】【详解】考查情态动词。

句意：我们不应该把拥有洁净的饮用水看作是理所当然的。

也许有一天，我们会用完它。

【英语】高考英语试题真题分类汇编情态动词一、单项选择情态动词1．—It’s so hot and uncomfortable here! Why are your windows still closed?—Oh, I’m not to blame. They ________ open.A．shan’t B．mustn’t C．won’t D．wouldn’t【答案】C【解析】【详解】考查情态动词辨析。

句意：---这里又热又不舒服！你的窗户怎么还关着？ ---哦，不该责备我啊。

窗户打不开了。

shan’t= shall not意为“不可, 不应”；mustn’t=must not意为“不要”；wouldn't=would not 意为“不会，不愿意”。

won’t=will not意为“不会, 不能”， will在这里表示能力、功能。

例如：This auditorium will seat one thousand people. 这个礼堂能容纳一千人。

这句话意思是“这扇窗不能打开”，故选C项。

2．It_____ have been Tom that parked the car here, as he is the only one with a car.A．may B．can C．must D．should【答案】C【解析】【详解】考查情态动词表猜测的用法。

句意：一定是汤姆把车停在这儿的，因为他是唯一有车的人。

A. may可能；B. can可能；C. must一定；D. should应该。

由as he is the only one with a car.可知一定是他把车停在这里的，非常有把握的肯定推测，故选C。

3．Mark ______ have hurried. After driving at top speed, he arrived half an hour early. A．needn’t B．wouldn’t C．mustn’t D．couldn’t【答案】A【解析】考查情态动词。

高考(完整版)情态动词专题(练习题含答案)一、选择题1．A lot of online resources ________ be used either by teachers at school or parents at home. A．can B．should C．need D．must2．Don’t cross the road until the traffic lights turn green. A car_______hit you.A．need B．may C．should D．must3．Hurry up, or we ________ miss the beginning of the film.A．should B．must C．may D．have to4．—I must go to school today, ________?—No, you ________.You can go as soon as you get well.A．mustn’t I;needn’t B．needn’t I;needn’tC．mustn’t I;mustn’t D．need n’t I;mustn’t5．— Excuse me, could you tell me where the Nanjing Brocade Museum is?—Go along this road for five minutes. You ________ miss it. It’s a huge building. A．mustn’t B．can’t C．needn’t D．shouldn’t 6．—Will my car be ready by the end of the day?—I t ________ be, sir. I’ll call if there’s any problem.A．must B．could C．shall D．should7．— Is Lang Lang going to perform at Art Center this Friday?— Yes. It ________ be him. He has been here for three days.A．might B．must C．mustn’t D．may8．When you visit a museum, some instructions should ________ and we’d better not ________ them.A．pay attention to; be against B．be paid attention; againstC．be paid attention to; against D．be paid attention to; be against9．You ________ be careful with the camera. It costs!A．can B．will C．should D．may10．— Mom, must I clean my room now?— No, you ________. You can do it after dinner.A．needn’t B．mustn’t C．shouldn’t D．can’t11．We teenagers ________ have dreams. With dreams and hard work, anything amazing________ be created.A．may; can B．might; should C．should; can D．must; has to 12．—Have you decided to take up teaching as career after graduation?—I ________ go abroad for further education instead. But it depends.A．must B．should C．may D．shall 13．Please don't make so much noise. I ________ hear the speaker very well.A．needn't B．can't C．shouldn't D．mustn't 14．—The high school entrance examination is coming!—Yes, our teacher tells us we _______ be too careful while taking exams．A．mustn't B．shouldn't C．needn't D．can't15．You ______ pay too much attention to your pronunciation, as it is so important in the oral （口头的） test.A．shouldn’t B．mustn’t C．can’t D．needn’t 16．—Would you please________in that way? That’s not safe!—Sorry. I won’t do it any more.A．not driving B．not to drive C．no driving D．not drive 17．Dr. Zhong Nanshan once said, "To prevent the spread of this disease, we________never be too careful."A．can B．may C．must D．should18．—Will your mother be at home this Saturday?—Hard to say. She _______go to the countryside to see my grandparents.A．must B．may C．can D．would19．Think twice before making a decision, or you __________ get into trouble.A．may B．can't C．shouldn't D．mustn't20．I ________ hear you clearly. Would you please repeat it?A．mustn’t B．can’t C．needn’t D．shou ldn’t 21．Look at the floor, Tom! ________ you watch TV while having a meal?A．Should B．Could C．Must D．May22．You _________ smoke here! Look at the sign. It says "No smoking".A．needn't B．mustn't C．can D．may23．— Listen! Tom ________ be listening to the music while doing his homework.—Let’s go upstairs to remind him to turn it off.A．should B．could C．would D．must24．—Will Jim come to Yangzhou for a holiday?—He ________come and it depends on how much homework he will have.A．may B．should C．must D．need25．—In China, many parents complain that their children have to stay up late to do the homework.—Don’t worry. The government has realized the problem. I’m sure there ________ be good news soon.A．can B．should C．need D．must26．I think all the students love the weekends because, to them, they ________ get up early on Saturdays or Sundays.A．mustn’t B．don’t need C．needn’t D．can’t27．When people are waiting at the zebra crossing, cars and buses ________ wait and let them go first.A．must B．may C．can D．need28．—Shall I tell him the change of the time right now?—I’m afraid you ________, otherwise he will be late for the meeting.A．can B．may C．must D．need29．It’s of great importance to protect the environment. Each of us ________ take an active part in it.A．can B．may C．would D．should 30．—Must we stop the Japanese government discharging nuclear waste water (排放核污水) into the Pacific Ocean?—________. Because everyone should protect our earth and it is bad ________ us to eat the polluted seafood and drink the waste water.A．Yes, we can; of B．No, we mustn’t; of C．Yes, we must; for D．No, we needn’t; for 31．According to the rule, used batteries ________ be dropped in the red bin for harmful wastes. A．may B．would C．should D．might32．Cars ________ give way to walkers on some roads in Binhai, or the drivers will be fined. A．may B．will C．can D．must33．Mr. Black ________ be at home now. He went abroad on vacation last Friday.A．can’t B．mustn’t C．needn’t D．shouldn’t 34．—How beautiful the winter jasmines (迎春花) are!—Yes. These golden-yellow flowers ________ be widely seen in my city in March.A．must B．can C．would D．should35．— What do you think of the show yesterday?— Some of them were really good but others ________ be better.A．will B．must C．need D．can 36．—Who’s the man over ther e? Is that Mr. Black?—It ________ be him. Mr. Black is much taller than that man.A．may B．must C．can’t D．mustn’t37．—________ I see your ID card? We have to check your personal information.—Sure. Here you are.A．May B．Need C．Should D．Must38．—I don’t care what people think.—Well, you _______ . Some opinions are worth weighing.A．should B．might C．could D．would39．—I think they are enough. We ________ make so many chairs.—I don’t think so. Because nearly a quarter of them need ________.A．don’t need to; mending B．needed; to be mendedC．don’t need; mend D．need; to mend40．—Seventy dollars for such a dress! You ________ be joking!—I’m serious. It’s made of silk from Hangzhou.A．must B．need C．will D．can【参考答案】一、选择题1．A解析：A【详解】句意：很多在线资源既可以供学校的老师使用，也可以供家长在家使用。

高中英语情态动词形式练习题40题含答案解析1.You come to the party tonight if you finish your homework.A.canB.couldC.mayD.might答案解析：A。

“can”表示有能力或有机会做某事，在这里表示如果你完成作业就有机会来参加今晚的派对。

“could”和“might”语气较委婉，“may”通常表示可能性。

在这个语境中，强调有能力和机会，用“can”最合适。

2.She pass the exam if she studies hard.A.canB.couldC.mayD.might答案解析：A。

同样，这里强调如果她努力学习就有能力通过考试，“can”表示能力。

“could”“might”语气委婉，“may”表示可能性，这里突出能力，所以选“can”。

3. you help me with this math problem?A.CanB.CouldC.May答案解析：B。

这里用“could”表示委婉地请求，“can”语气较直接，“may”和“might”在这个语境中不太符合请求的语气。

4.I ask you a question?A.CanB.CouldC.MayD.Might答案解析：C。

“may”用于请求许可比较正式，“can”也可以用于请求但相对不那么正式，“could”和“might”语气委婉但在这里不太符合直接请求的语境。

5. he come to school late today?A.CanB.CouldC.MayD.Might答案解析：D。

“might”在这里表示对可能性的较小推测，他今天有可能会迟到吗？“can”和“could”通常不用于这种较小可能性的推测，“may”也不太符合这个语境。

6. you lend me your pen?A.CanB.CouldD.Might答案解析：B。

“could”表示委婉地请求借笔，“can”语气较直接，“may”和“might”不太符合请求借东西的语境。