高考英语单项选择分类训练：情态动词(含答案解析)

【英语】情态动词练习题含答案及解析一、单项选择情态动词1．—Can I pay the bill by check?—Sorry，sir．But it is the management rules of our hotel that payment _____ be made in cash．A．shall B．needC．will D．can【答案】A【解析】【详解】考察情态动词用法。

句意：——我能用支票付账吗?——对不起,先生。

但这是我们酒店的管理规定,支付要用现金。

shall可以表示命令，警告，强制，或者指规则和法律要求做的事情。

本题正是考察了shall表示按照规则和法律要求做的事情。

故A正确。

2．You _____ be right but I’m going back to check anyway.A．should B．must C．need D．might【答案】D【解析】【详解】考查情态动词。

句意：你或许是对的，但我还是要回去核对一下。

A. should应该；B. must 一定，必须；C. need需要；D. might或许。

本题主要考查情态动词表示推测的用法，由I’m going back to check anyway可知，我对此不确定。

由此可知，D项符合题意。

故选D项。

【点睛】can / could用于表推测的用法(1) 从使用句型上看，can 通常只用于否定句或疑问句，一般不用于肯定句，而could 可用于肯定句、否定句和疑问句。

两者没有时间上的差别，只是could 比 can 更委婉，更不确定。

(2) 从时间关系看，对现在或将来情况作推测，后接动词原形；对正在进行的情况作推测，后接 be doing 结构；对过去情况作推测，后接动词完成式。

二、 may / might用于表推测的用法表示推测，两者都可用，只是 might 比 may 语气更不确定，表示的可能性更小。

高考情态动词单选20题答案解析版1. She ______ know the answer. She always gets good grades in English.A.mustB.canC.mayD.could答案：A。

选项A“must”表示肯定的推测，意为“一定”，根据后句她英语总是得高分，可以推断她一定知道答案。

选项B“can”表示能力，“能、会”；选项C“may”表示可能性较小的推测，“可能”；选项D“could”表示过去的能力或委婉的请求等。

2. You ______ finish your homework before you watch TV.A.mustB.canC.mayD.could答案：A。

“must”在这里表示“必须”，在看电视之前必须完成作业。

选项B“can”表示能力或允许；选项C“may”表示可能或允许；选项D“could”表示过去的能力或委婉的请求等。

3. He ______ be at home. I just saw him go out.A.mustn'tB.can'tC.may notD.couldn't答案：B。

“can't”表示否定的推测，“不可能”，因为刚刚看到他出去了，所以他不可能在家。

选项A“mustn't”表示禁止；选项C“may not”表示可能性较小的否定推测；选项D“couldn't”表示过去的否定推测，语气比“can't”弱。

4. —______ I use your pen?—Sure. Here you are.A.MustB.CanC.MayD.Could答案：B。

这里表示请求，“我能使用你的钢笔吗？”“can”可以用于请求允许。

选项A“must”表示必须；选项C“may”也可以用于请求允许，但语气比“can”弱；选项D“could”用于委婉的请求。

5. She ______ have forgotten to bring her book. She is always very careful.A.mustn'tB.can'tC.may notD.couldn't答案：B。

高考英语情态动词真题汇编(含答案)及解析一、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．—Did you attend the meeting for the experiment project yesterday?—Yes, but I don’t think I ____ because my director was there.A．need to have B．need to C．needed to D．need have【答案】D【解析】【分析】【详解】考查情态动词+have done。

句意：——你昨天参加实验项目的会议了吗?——是的，但我想我（本来）不需要，因为我的主管在那里。

Think/suppose等宾语从句中如果有否定词时，要把从句的否定词not前移，即“否定前移”。

所以not是从句中的否定词。

“need have done”意为“本来有必要做而未做”；“needn’t have done”指过去本来没必要做而做了。

根据上一句时间状语“yesterday”可知本句指的是过去发生的事。

结合第二句“because my director was there(我的主管)在”可推断出，我本来不必要去。

故选D。

3．Frankly speaking, I am not sure whether I ________ this in the old days with that kind of equipment, which looks quite odd and ridiculous.A．should have done B．need have done C．would have done D．must have done 【答案】C【解析】【详解】考查情态动词+have done。

【英语】高中英语情态动词解题技巧分析及练习题(含答案)及解析一、单项选择情态动词1．He is a bad-tempered fellow, but he ________ be quite charming when he wishes.A．shall B．shouldC．can D．must【答案】C【解析】【详解】考查情态动词辨析。

句意：他是个脾气不好的家伙，但当他希望自己有魅力的时候，他可以变得相当可爱。

此处表示“能、可以”，故C项正确。

2．---Artistic people can be very difficult sometimes.---Well, you______know---you married one.A．might B．would C．shall D．should【答案】D【解析】【详解】考查情态动词词义辨析。

A. might可能，也许；B. would将会；C. shall必须，会；D. should 应该。

句意：---有艺术修养的人有时很难相处。

---你应当知道这一点，因为你结婚那位就是搞艺术的。

这里是按照常理推断，用should。

3．It ________ be the postman at the door. It's only six o'clock.A．mustn't B．can'tC．won't D．needn't【答案】B【解析】D[考查虚拟语气。

句意：不可能是邮递员在门口，才六点钟呢。

mustn't 禁止，不允许；can't 不可能；won't 不愿意，就是不，偏不；needn't 不需要。

]4．—Can I pay the bill by check?—Sorry，sir．But it is the management rules of our hotel that payment _____ be made in cash．A．shall B．needC．will D．can【答案】A【解析】【详解】考察情态动词用法。

【英语】高考英语情态动词专题训练答案及解析一、单项选择情态动词1．I often felt troubled in my teens and my grandma ________ comfort me, saying “Life is like that, dear”.A．would B．might C．should D．must【答案】A【解析】【详解】考查情态动词。

句意：在我十几岁的时候，我经常感到烦恼，我的奶奶会安慰我说，“生活就是这样，亲爱的”。

此处是would+动词原形，表示“过去总是做某事”。

故选A。

2．Our English teacher is considerate，helpful，and warm-hearted，but sometimesshe________________ be angry at our silly mistakes.A．should B．mustC．can D．shall【答案】C【解析】【详解】考查情态动词。

句意：我们的英语老师很体贴、乐于助人、热心肠，但有时她可能为我们愚蠢的错误而发火。

can表示一种客观的可能性，但不一定会发生，故C项正确。

3．—It’s already 11 o’clock , and he ______ have been here half an hour ago.—Maybe he got caught in the rain.A．must B．ought toC．may D．can【答案】B【解析】【详解】考查情态动词。

句意：已经11点了，他半小时前就该到了。

A. must have done必定做了…（表示对过去的推测）；B. ought to have done 本应该做的；C. may have done可能已经做过某事；D. can have done本来可以做的（但没有做），根据题意，故选B。

4．My sister met him in the street yesterday afternoon, so he ______ your lecture.A．shouldn’t have attended B．couldn’t have attendedC．mustn’t have attended D．needn’t have attended【答案】B【解析】试题分析：考查情态动词用法。

【英语】高考英语情态动词题20套(带答案)及解析一、单项选择情态动词1．—Can I pay the bill by check?—Sorry，sir．But it is the management rules of our hotel that payment _____ be made in cash．A．shall B．needC．will D．can【答案】A【解析】【详解】考察情态动词用法。

句意：——我能用支票付账吗?——对不起,先生。

但这是我们酒店的管理规定,支付要用现金。

shall可以表示命令，警告，强制，或者指规则和法律要求做的事情。

本题正是考察了shall表示按照规则和法律要求做的事情。

故A正确。

2．Ann said whenever her father was unhappy he ________ go out and buy something, usually something large and useless.A．should B．couldC．would D．might【答案】C【解析】【详解】考查情态动词。

句意：安说无论什么时候她父亲不高兴的时候，他就会出去买些东西，通常是一些又大又没用的东西。

A. should应该；B. could能；C. would总是，愿意；D. might 可能。

此处表示过去经常习惯做某事，故选C。

3．The accident which left 15 people on board dead ________ if both the angry female passenger and the bus driver had kept calm.A．should have avoided B．should be avoidedC．could have avoided D．could have been avoided【答案】D【解析】【详解】考查“情态动词+完成式”。

单项选择1．We shall not ___________ in the face of difficulties.A．lose our heart B．lose hearts C．lose heart D．lose the heart 2．—Jack, I can’t find my keys anywhere.—You _______ have lost it while running.A．can B．may C．should D．would3．Tom, you ______ read in the moon light because it is no good for your eyes.A．mustn’t B．wouldn’t C．needn’t D．daren’t 4．—Where________ Margaret have put the empty bottles?—She ________them away. They must be somewhere.A．can; can’t have thrown B．must; needn’tC．must; must have thrown D．can; must throw5．Mum always has me __________ out for a walk, but I would rather ________ at home.A．to go; stay B．go; to stay C．go; be staying D．going; stay 6．—Congratulations! You ________ great efforts for the English speech contest.—Thanks. I do appreciate my teacher’s guidance.A．must have made B．should have made C．could make D．would make 7．You ______ be a fan to recognize the skill of professional football players－how they use their bodies to pass, score and defend ______ be amazing to see.A．mustn’t; might B．needn’t; canC．don’t have to; may D．can’t; might8．— I didn’t attend the opening ceremony yesterday because I got bitten by a bee.— Oh, be careful. Although they are small, some types really dangerous.A．will be B．can be C．should be D．must be9．--Why is Tom absent?--He must be sick, __________?A．isn’t he B．must he C．is he D．mustn’t he 10．—Must we hand in our reading report by the end of this week?—No, you ______.A．mustn’t B．needn’t C．can’t D．shouldn’t11．His face seems so familiar to me. I ______ him somewhere before.A．must have seen B．must see C．might have seen D．might see 12．— Dad, I’ve finished my homework.— Good! You ______ go to play or watch TV if you like.A．need B．must C．can D．should 13．—Who’s singing in the next room? Is it Lucy?—It ______ be her. She has gone to New York.A．needn’t B．can’t C．mustn’t D．won’t14．— Will you go swimming with us this weekend?— It depends. I ______ go to visit my grandpa in the countryside.A．will B．can C．must D．may15．To keep fit, you ______ take regular exercise instead of sitting around all the day. A．should B．could C．may D．will16．As a senior high school student, you ________ make efforts to improve your communication and problem-solving skills.A．can B．may C．must D．might 17．—What are you planning to do this summer holiday?—Well, I am not so sure now. I ________go to the countryside to visit my grandparents. A．might B．need C．can D．must18．Jenny ________ have finished her work. Or she wouldn’t be playing badminton now. A．should B．needn’t C．must D．can’t19．Dear Allan, I’m afraid I won’t pay you any visit by now since I’m rather occupied, but I assure you that you ________ have my company as soon as I’m released from work.A．must B．might C．ought to D．shall 20．Whatever ________ on her mind, she ________ a message and went straight away A．could be; must have left B．might have been; shouldn’t have left C．must have been; could have left D．should be; couldn’t have left21．A large number of tourists complained about being stranded on the top of Yellow Mountain during the Spring Festival, waiting for cable cars that never came. The person in charge of Huangshan Scenic Area admitted they ___________better organized.A．might have been B．may have been C．would have been D．must have been 22．Not all flowers have a strong fragrance. Some ___________ be smelly. Those that sell well ___________ be the beautiful and fragrant ones.A．may; must B．must; may C．can; should D．should; can 23．—I am running late but my car ___________.—This is a new car. Problems like these should not occur, but accidents ___________. A．won’t start; will happen B．can’t start; can happenC．won’t start; should happen D．can’t start; must happen24．“You ___________ lead a horse to water, but you ___________ make it drink.” This is a proverb that means offering a nice opportunity is good, but there is no way of making others take it if they don’t want to.A．may; can’t B．can; can’t C．must; shouldn’t D．should; shouldn’t 25．—I heard our boss suffered great loss because someone had leaked information to our competitor.—___________ that betrayed us? He was the first to be fired.A．Must it be Sam B．Can he be SamC．Can it have been Sam D．Could he have been Sam26．You ______ worry too much about your daughter, for she is a very independent girl. A．can’t B．mustn’t C．shan’t D．needn’t27．Old age _______ burn and rage at the close of day; rage, rage against the dying of the light. A．couldn’t B．should C．wouldn’t D．shall28．—They___ be doing the experiment in the lab.—Why?—Because the lights are still burning.A．could B．can C．would D．must29．When Della returned from skiing, her parents complained that she________her legs when she fell over.A．should have broken B．must have broken C．could have broken D．would have broken 30．—The wounded soldier ________ have been sent to hospital immediately.—So he ________ , but all efforts made no difference.A．should, was B．must, did C．ought to, had D．can, has 31．—The computer start. What’s the matter with it?—Let me look. Well, the power was cut off just now.A．shan’t B．needn’t C．won’t D．mustn’t32．—He ______be in the classroom. I think.—No, he ______ be in the classroom. I saw him go home a minute ago.A．can; may not B．must; may not C．may; can’t D．may; mustn’t 33．My room is in a mess, but I ________ clean it before I go out tonight. I have determined to do a thorough cleaning tomorrow morning.A．daren’t B．shouldn’t C．mustn’t D．needn’t34．My pain _____ obvious the moment I walked into the room, for the first man I met asked sympathetically, “Are you feeling all right?”A．must be B．may be C．might have been D．must have been 35．You ________ go out alone, or you ________ get lost in the strange city.A．needn’t; may B．mustn’t; mightC．can’; need D．mustn’t; must36．Although he is only a child, he speak five languages.A．should B．dare C．must D．can37．— Excuse me, where is George?— George ________ too far. His coffee is still warm.A．must have gone B．might have goneC．can’t have gone D．needn’t have gone38．You________so slowly. I just needed a few seconds to get used to your voice. A．shouldn’t speak B．couldn’t have spokenC．don’t have to D．needn’t have spoken39．George ______ too far. His tea is still warm.A．should have gone B．can’t have gone C．might have gone D．needn’t have gone 40．— “Why hasn’t Jack come back yet? _____ anything have happened to him?”— “I think there _____.”A．May; must have B．Must; mustC．Can; may have D．Can; can41．Plenty of things can cause stress, and there are such things as good stress and bad stress. Good or normal stress _________ show up when you’re called on in class or when you have to give a report.A．must B．might C．shall D．would42．If someone happens to have high fever and pneumonia, he or she _________ seek treatment fast.A．must B．needs C．may D．could43．You haven’t gone anywhere today. You ________ your bag in the office.A．could have left B．must have leftC．could leave D．must leave44．—It’s really tiring for me to stand in the queue for three hours to get the G-train ticket. —You _______. You could have got one online.A．mustn’t have B．shouldn’t have C．can’t have D．needn’t have 45．According to the regulations, all the passengers _______ have their luggage checked before they get on the train.A．can B．may C．would D．shall46．With no gravity to push against, astronauts’ bones and muscles ________become weak. A．should B．must C．can D．need47．My sister met him at the Grand Theatre yesterday afternoon, so he _____ your lecture. A．can’t have attendedB．needn’t have attendedC．mustn’t have attendedD．shouldn’t have attended48．He promised South Africans that he would _________ himself _________ them improve their lives.A．devote; into helping B．be devoted; to helpingC．devote; to help D．devoted; to helping49．Mary has gone to Guangzhou, so she _____be in Shenzhen at present.A．mustn’t B．can’t C．needn’t D．won’t50．Dad has come to love hot pot! But there are still some dishes that he ________ not try even after many years of marriage to my mother.A．need B．should C．dare D．had better 51．Trucks _____ be parked here, or you will be fined.A．needn’t B．mustn’t C．wouldn’t D．daren’t52．Do remember you breathe a word of this to anyone.A．won’t B．shan’t C．don’t D．wouldn’t 53．Timmy, why in the mud? I have already told you so many times not to!A．must you sit B．should you sit C．will you sit D．can you sit 54．The children________very excited as they opened Christmas gifts from their parents. A．must have been B．must be C．can have been D．can be55．If there is nothing more to do, we ________ as well go to bed.A．should B．can C．would D．may56．The headmaster _________ come to attend our party, but I’m not sure.A．must B．can C．may D．need57．—Do we have to take some warm clothes?—Yes, we had better. It ________be cold in the mountain at night.A．may B．would C．can D．should58．No driving after drinking is a rule that every driver________obey in our country.A．must B．may C．shall D．can59．— I saw Mary in the library this morning.— It _______ be her twin sister. Mary has been away from Beijing for a week.A．can B．need C．must D．should 60．When faced with challenges, sometimes you _______feel you are lost in thick mist and can’t see the light, but I’m a hundred percent sure later you’ll be grateful you didn’t throw in the towel. A．should B．need C．shall D．may61．Ben later joked that the job ________ not as the “best”, but the “busiest job in the world”. A．could have been advertised B．should have been advertised C．needn’t have been advertised D．must have been advertised 62．Remember to bring more clothes because the winter in Shanghai ________ be very coldsometimes.A．shall B．can C．would D．need63．The new test should ____ doctors to detect the disease early.A．able B．enable C．disable D．unable 64．Some students ________ in the midterm exam for the results didn’t reflect their real abilities, while others ________ better but they didn’t review the lessons well.A．should cheat; would have performed B．should have cheated; would perform C．might cheat; would perform D．might have cheated; would have performed 65．Only when you have contracted the virus ________ the correctness of advice that, unless you are strong enough to get over it of yourself, you ________ be vaccinated.A．you will recognize; need to B．will you recognize; are toC．you will recognize; must D．will you recognize; should66．—It’s 7:30 and he hasn’t taken the nucleic acid test yet!—Well, he ________.A．ought to B．oughtn’t to have C．ought to have D．ought to have to 67．- Will my car be ready by the end of this week?- It ________ be, sir. I will give you a call if it is ready.A．should B．shall C．would D．must68．—Can I please have a little more time?—No, you_________. The test time is up.A．can’t B．couldn’t C．mustn’t D．needn’t69．— You burned your face and arms.—Yes, I in the shade like all the other tourists at noon.A．should be B．must have been C．must be D．should have been 70．When reading The Road Not Taken, one cannot help but ________ in one’s mind images of a peaceful wood deep within the countryside.A．seeing B．to see C．see D．seen参考答案：1．C【详解】考查固定搭配。

高考英语情态动词经典习题(含答案)一、单项选择情态动词1．Students ____ remain in their seats until all the papers have been collected according to the regulation.A．would B．shall C．will D．could【答案】B【解析】【详解】考查情态动词。

句意：学生们必须呆在自己的座位上，直到所有的试卷都被收回。

根据句意，“学生们呆在自己的座位上”是一项规定。

shall 可表示某种规定或义务，用于第二、三人称的句子中。

而其他情态动词无此用法。

故正确答案为B。

2．It ________ be the postman at the door. It's only six o'clock.A．mustn't B．can'tC．won't D．needn't【答案】B【解析】D[考查虚拟语气。

句意：不可能是邮递员在门口，才六点钟呢。

mustn't 禁止，不允许；can't 不可能；won't 不愿意，就是不，偏不；needn't 不需要。

]3．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。

【英语】高考英语情态动词试题(有答案和解析)及解析一、单项选择情态动词1．would可以表达过去常常做的事，过去习惯发生的动作：Pirates would bury gold in a cave. 海盗们常常把黄金藏在山洞中。

We would take a walk along the river. 我们过去常常沿河散步。

3. would后接like、love、mind等动词，表示要求、邀请、希望或询问，此时不是说过去，而是对现在的询问：Would you like to come to my party? 你愿意来我的派对吗？Would you mind coming with us? 你介意和我们一起吗？比如本题，would 表示婉转的请求，征求对方的意见，故选A。

2．I’m sorry, but you _____ go wrong. There’s no such man here.A．need B．can C．must D．will【答案】C【解析】【详解】考查情态动词。

句意：很抱歉，但是你一定是弄错了。

这儿没有这么个人。

A. need需要；B. can能够；C. must必须；D. will将会。

must指有把握的推测，“一定；必定”，结合下文There’s no such man here.可知一定是弄错了。

故选C。

3．—It’s already 11 o’clock , and he ______ have been here half an hour ago.—Maybe he got caught in the rain.A．must B．ought toC．may D．can【答案】B【解析】【详解】考查情态动词。

句意：已经11点了，他半小时前就该到了。

A. must have done必定做了…（表示对过去的推测）；B. ought to have done 本应该做的；C. may have done可能已经做过某事；D. can have done本来可以做的（但没有做），根据题意，故选B。

高中英语语法单项选择题分类整理练习情态动词1. —How about paying a visit to Mr. Richardson, our former history teacher?—Good idea. I will e-mail him today so he ___ know ___ to expect us.A. may,whenB. would, whyC. will, howD. shall, why解析：答案是A may用在so、so that、in order that后常表目的。

“我”给他发封e-mail，这样他就可以知道什么时候接我们了。

故选A。

2. When he was there, he ____ go to that coffee shop at he street corner after work every day.A. wouldB. shouldC. had betterD. might解析：答案是 A would可用来表示过去经常性、习惯性的动作，当他在那儿时，他每天下班后都经常到街道拐角处的咖啡店。

故选A。

3.–I can’t find my purse anywhere.-- You __ have lost it while shopping.A. mayB. canC. shouldD. would解析：答案是A 句意为：--我找遍了都没找着钱包---你可能在购物的时候弄丢了。

may表推测常用于肯定句，can表推测常用于否定句和疑问句中。

should：表示应该would：常用在过去将来时中由此可知,A选项正确4. According to the air traffic rules, you ___ switch off your mobile phone before boarding.A. mayB. canC. wouldD. should解析：答案是D 此题考查情态动词的用法。

（英语）高考英语情态动词专项训练及答案含解析一、单项选择情态动词1．—I feel a little nervous.—Take it easy. You __________ have difficulty passing the exam when you have prepared for it well.A．mustn’t B．needn’t C．may not D．shouldn’t【答案】D【解析】【详解】考查情态动词。

句意：——我觉得有点紧张。

——不要着急。

当你准备充分时，通过考试应该不会有困难。

A. mustn’t禁止，不允许；B. needn’t不必；C. may not可能不会；D. shouldn’t不应该。

结合句意可知答案为D。

2．He is a bad-tempered fellow, but he ________ be quite charming when he wishes.A．shall B．shouldC．can D．must【答案】C【解析】【详解】考查情态动词辨析。

句意：他是个脾气不好的家伙，但当他希望自己有魅力的时候，他可以变得相当可爱。

此处表示“能、可以”，故C项正确。

3．I often felt troubled in my teens and my grandma ________ comfort me, saying “Life is like that, dear”.A．would B．might C．should D．must【答案】A【解析】【详解】考查情态动词。

句意：在我十几岁的时候，我经常感到烦恼，我的奶奶会安慰我说，“生活就是这样，亲爱的”。

此处是would+动词原形，表示“过去总是做某事”。

故选A。

4．It wasn’t right to me that such near neighbors not know one another.A．could B．wouldC．should D．might【答案】C【解析】【详解】考查情态动词。

【英语】高考英语情态动词专题训练答案含解析一、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．We’ll make the final decision on our scheme. ______ you change your mind, please inform us as soon as possible.A．Should B．Were C．Would D．Had【答案】A【解析】【分析】【详解】考查虚拟语气。

句意：我们将对我们的计划做最后决定。

如果你改变主意，请尽快通知我们。

根据语境，此处用虚拟语气，表示与将来相反，从句用should+动词原形，省略if，should提前，陈述句是：If you should change your mind……。

故选A。

【点睛】虚拟语气中的倒装当虚拟条件句中含有 were，had，should时，可以将if省略，然后将 were，had，should，移至句首：1）If he should fail, he would kill himself.→Should he fail, he would kill himself.万一失败，他就会自杀。

2）If I were you, I would do it at once.→Were I you, I would do it at once.假若我是你，我就会马上做。

要是我能做此事，我一定会做。

3）If he had seen you yesterday, he would have asked you about it.→Had he seen you yesterday, he would have asked you about it.他昨天要是看到了你，他就会问你这事了。