情态动词高三复习学案
高三英语语法情态动词复习学案
2010届高三英语语法情态动词复习学案一．情态动词的语法特征1. 情态动词不能表示正在发生或已经发生的事情，只表示期待或估计某事的发生。
2. 情态动词除ought 和have 外，后面只能接不带to 的不定式。
3. 情态动词没有人称，数的变化，即情态动词第三人称单数不加-s。
4. 情态动词没有非谓语形式，即没有不定式、分词、等形式。
情态动词的分类和意义意义情态动词can, may, might, could, would, will, shall, must, should, ought to, used to二．情态动词的基本用法1. can (could)1) 表示能力，could主要指过去时间。
例如：①Two eyes can see more than one. 两只眼比一只眼看得清。
②Could the girl read before she went to school? 这女孩上学前能识字吗？2) 表示可能（理论上或是逻辑判断上）。
例如：①He can’t (couldn’t) have enough money for a new car.他不可能有足够的钱买新车。
②You mustn’t smoke while you’re walking around in the wood. You could start a fire. 在林子里走时勿吸烟，那样可能会引起火灾。
3) 表示允许。
例如：①Can I have a look at your new pen? 我可以看一看你的新钢笔吗？②He asked whether he could take the book out of the reading—room. 他问他可不可以把书带出阅览室。
4) 表惊异、怀疑、不相信等态度。
主要用于否定句、疑问句或感叹句中。
例如：①Where can (could) they have gone to? 他们会去哪儿了呢？②How can you be so careless? 你怎么这么粗心？5) 比较委婉客气地提出问题或陈述看法。
情态动词高三一轮复习学案
情态动词I can /could1.表一般的能力07湖南）The biggest problem for most plants , which can’t get up and run away when thrreatened, is that animals like to eat them.be able to 指在一定情况下做某事或通过努力才具备的能力07全国）The fire spread through the hotel very quickly but everyone was able to go out.2.表示许可或请求允许03 全国）A luggage office is a place where bags can be left for a short time ,especially at a railway station._肯定回答否定回答No, you can’t /may not/ mustn’t/ you’f better not--Could I be kept informed to whatever happens?-- Yes , you ___________.A. mightB. canC. wouldD. are able to– Mum I’ve been studying English since 8:00 , ________ I go and play with Tom for a while?-- No , I’m afraid not . Besides, it’s raining outside now.A. can’tB. wouldn’tC. may notD. won’t3.用于疑问，感叹句中表示惊异、怀疑、不相信的态度03上海）How can y ou say that you really understand the whole stoty if you have covered only part of the article.06山东）How can you expect to learn anything when you never listen?4.can 用于肯定句表示理论上的可能性，译为“有时，常常，往往会”–It is warm and I am just wearing a shirt today.-- But the weather here can change.05浙江）The World Wide Web is sometimes jokingly called the World Wide Wait because it can be very slow.Making choices can be difficult , especially when there is no one to turn to for advice.In history , literature ,English and foreign language classes , reading and comprehension skills_____ be the difference between passing and failing.A. shouldB. canC. mustD. shall5.用于固定句型cannot/ couldn’t （help/choose）… but do 只好，不得不The people couldn’t but submit to the new rulers when they lost the war.cannot/ couldn’t (can/could never) + 形容词副词比较级表示肯定，最高级的概念cannot (never)…… enough/ too much 无论怎样也不为过，越。
高中英语必修三情态动词学案(生)
情态动词情态动词的基本概念和特征：1.情态动词用来表示说话人对某一动作或状态的看法、态度，即说话人认为某事“可能”“或许”“应该”发生等。
2. 情态动词除ought, used, have后跟不定式外，其他情态动词一律跟动词原形。
3. 情态动词表示说话人的语气和情绪，本身词义不全，不能单独作谓语，必须与后面的动词原形一起构成谓语。
情态动词没有人称和数的变化，即情态动词第三人称单数不加-s (have to除外.。
有的情态动词有过去式，有时后面还可跟动词的进行时、完成时和被动式形式。
4. 常见的情态动词有can, could, may, might, must, have to, shall, should, will, would, ought to, need, dare等。
情态动词的基本用法（一）情态动词的基本用法1、can和could表能力（1）意为“能够会”，表示体力或脑力等方面的能力Can you ride a bike?你能骑自行车吗？I could run faster then. 我那时能跑得更快一些。
（2）当can和could表示能力时，有时可以用be able to替换，could表过去，can表现在，有时也可表将来，但不能与will, shall等助动词连用；be able to可以用于将来、完成等时态。
With his help, we shall be able to build the house.在他的帮助下，我们将能够建造房屋了。
（3）当我们要强调过去确实使用了某种能力时，要用was（were）able to，而不用could。
was able to 表示“设法干成某事”，即succeed in doing sth.或manage to do sth.而could只表示“具备某种能力”。
He is such a good swimmer that he was able to save the two boys from drowning the other day.2、must和have to（1）must表示“必须”，“应该”。
情态动词导学案-高三英语一轮语法复习
一轮英语语法之八：情态动词【预习案】1.情态动词的特性1)不能单独充当谓语，后接______________。
2)无_________________形式。
3)部分情态动词无过去式。
4)可用作助动词。
2.3.常见用法：1)用于请求与询问①May/Might/Could/Can I...?②Would you (please)…/Would you mind…?③Must/Need I…?④Shall I/we/he…?2)表推测①It can be very warm in this area.②It's 9:30 .I think she ___________ be in her office.③That restaurant ____________ be very good. It’s always empty.(2)时间观念①+do/be 对现在情况的推测②+be doing 对现在正在进行的动作的推测③+have done 对过去发生的事情的推测填空：①I can’t find my ticket, I think I must __________(lose) it.②Judging by her clothes, she must ___________ very rich.3)虚语气中的运用①should (not) have done sth. 本应该做某事却没做/本不该做某事却做了②could/might have done sth.③needn’t have done sth.1)特殊的情态动词2)固定搭配①may/might as well ______________________②would rather do…, would prefer/like to do…③can’t …too…/enough __________________________④can’t help/resist doing sth. ______________________⑤can’t but do sth.⑥can’t wait to do ________________⑦before sb can… _____________________⑧I dare say. ___________________⑨do all/what/everything sb can to do sth _________________________【当堂训练】1.选择题1)（2017北京卷）Samuel, the tallest boy in our class, ____ easily reach the books on the top shelf.A.mustB.shouldC.canD.need2)（2017天津卷2）My room is a mess, but I __________clean it before I go out tonight. I can doit in the morning.A. daren’tB.shouldn’tC.needn’tD.mustn’t3)【2016·北京】I love the weekend,because I________get up early on Saturdays and Sundays.A.needn’tB.mustn’tC.wouldn’tD.shouldn’t4)【2016•浙江】George _________ too far . His coffee is still warm .A. must have goneB. might have goneC. can't have goneD. needn't have gone5)【2014·陕西卷】My book,The House of Hales,is missing.Who________have taken it?A.needB.mustC.shouldD.could6)【2021年天津卷第一次】It used to be that you ______ drive for miles here without seeinganother person, but now there are houses and people everywhere.A．need B．should C．could D．must7)【2021年天津卷第二次】I honestly don't think I'm going to be admitted.Wel1, you never know! You________ a better impression than you think.A. may have madeB. should have madeC. couldn’t have madeD. needn't have made8)【2020·天津】Jim says we ______ stay in his house as long as we leave it clean and tidy .A．must B．can C．need D．should9)【2020·天津】You ____________ have scolded him for his poor performance. After all, he haddone his best.A．must B．should C．mustn’t D．shouldn't2.填空：1)When I was a child, I ________ watch TV whenever I wanted to.2)The police haven’t found the lost child, but they’re doing all they _________.3)If you don’t want to go swimming, you ________ as well stay at home.4)I like the author so much that I __________ wait to read his new book.5)You __________ be too careful when crossing the street.6)The poor postman was fired before he _________ account for his fault.7)It is usually warm in my hometown in March，but it ________be rather cold sometimes.8)If you ________go，at least wait until the storm is over.3.单句改错：1)Some classmates suggest we can go to places of interest nearby.2)We can chose between staying at home and taking a trip.3)Do I need leave my telephone number and address?4)I mustn't use a clock to wake me up because at six o'clock each morning the train es by myhouse.5)But in fact, Gorka can quite shy, even around the people he has known for a while.6)As for the consumers, they had better have their own judgment and not were puzzled by ads.7)He may have given you more help, even though he was very busy.【巩固练习】1.选择1)【2015·北京】—Can’t you stay a little longer?—It’s getting late.I really_____go now,My daughter is home alone.A.mayB.canC.mustD.dare2)【2015·重庆】You____be Carol.You haven’t changed a bit after all these years.A.mustB.canC.willD.shall3)【2015·浙江】It was so noisy that we__________ hear ourselves speak.A.couldn’tB.shouldn’tC.mustn’t D needn’t4)【2015•天津】I ______ have worried before I came to the new school, for my classmates here arevery friendly to me.A.mightn’tB.mustn’tC.needn’tD.couldn’t5)【2015·四川】You_____be careful with the camera.It costs!A.mustB.mayC.canD.will6)【2015·陕西】You __________ feel all the training a waste of time, but I’m a hundred percentsure later you’ll be grateful you did it.A. shouldB. needC. shallD. may7)【2015·福建】—Sorry,Mum!I failed the job interview again.—Oh,it's too bad.You________ have made full preparations.A. mustB.canC.wouldD.should8)【2018年北京卷】In today’s information age, the loss of data _________ cause serious problemsfor a pany.A. needB. shouldC. canD. must9)【2018年江苏卷】It’s strange that he_______ have taken the books without the owner’s permission.A. wouldB. shouldC. couldD. might10)【2018年天津卷】I can't find my purse. I___________ it in the supermarket yesterday, but I'mnot sure.A. should leaveB. must have leftC. might leaveD. could have left2.改错1)We must found ways to protect our environment.2)I dare not to face the danger bravely.3)You shouldn't have bought so much food, because I have prepared everything we need for thepicnic.4)You had better not to e here tomorrow.5)You mustn’t do the exercise if you don’t want to.3.填空1)—No one ________be pared with Yao Ming in playing basketball.—Oh，you are really his big fan.2)It ________be the postman at the door. It's only six o'clock.3)I ________worry about my weekend—I always have my plans ready before it es.Just be patient.4)You ________expect the world to change so soon.5)—May I take this book out of the reading room?—No，you ________.You read it in here.6)You ________park here！It's an emergency exit.7)—I don't really like James. Why did you invite him?—Don't worry. He ________not e. He said he wasn't certain what his plans were.8)—I left my handbag on the train，but luckily someone gave it to a railway official.—How unbelievable to get it back！I mean，someone ________ have stolen it.9)It ________have been Tom that parked the car here，as he is the only one with a car.10)What do you mean，there are only ten tickets？There ________ be twelve.。
[推荐学习]高三英语一轮复习 情态动词导学案(无答案)
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情态动词班级：小组：学生姓名：【学习目标】To study main points and master the usage理解并掌握情态动词的概念及用法理解并掌握情态动词can, could，be able to的难点和考点进而灵活运用【学法指导】按照学案指导的思路进行有效复习，达到掌握情态动词的考点及灵活运用的能力【自主预习问题】Some of us can use the comp uter now, but we couldn’t use the computer last year.I’ll not be able to come this afternoon.He was able to go to the party yesterday evening in spite of theheavy ra in.总结：表能力。
表示现在的能力用____,表示过去的能力用______,当表示“经过努力才得以做成功某事”时应用_______，不能用can。
表示“将来能”用________ 。
【课前合作探究问题】探究1：表示请求和允许。
-----Can I go now?----- Yes, you can.（No, you can’t）---- Could I come to see you tomorrow?----Y es, you can. ( No, I’m afraid not. )总结：could 不是c a n的过去式，只是语气_______，在答语中用_______代替。
探究2：表示推测（惊讶、怀疑、不相信的态度），用于________和_______句中。
Can that be Mike? I thought he was in G reece.This can’t be done by him.How can this be true? I thought the story couldnot be true.注意：can偶尔用语肯定句中译为“有时候会…”，表示大部分时间不是这样，只是偶尔发生的事情。
高考英语二轮复习《情态动词》学案
高考英语二轮复习《情态动词》学案一、情态动词的基本用法，二、情态动词表示推测的用法辨析，1、否定的推测：语气不很肯定时，常用may not,might not 或could not，译为“可能不”“也许不”；否定语气较强时，则用can’t，译为“根本不可能”、“想必不会”，表示惊异、怀疑的感情色彩2、疑问句中推测往往用can或could3、考查情态动词+动词不定式的完成式表推测的用法三、、考查情态动词+动词不定式完成式的其他用法①should(ought to)+不定式的完成式：本来应该做而实际上又没有做。
其否定形式表示某中行为不该发生却发生了。
②needn’t+不定式的完成式：本来不必要做的而实际上又做了③could+不定式的完成式：本可以做而实际上未能做,含有遗憾的意味四、情态动词在虚拟语气中的运用。
高考例题【xx江西卷】22、We have bought so much food now that Suzie won’t be with us for dinner、A、may notB、needn’tC、can’tD、mustn’t【答案】B【考点】考察情态动词的用法【解析】may not不可以，needn’t不需要，cant不可能， mustnt 绝不可能本句句意为：既然Suzie不和我们一起吃晚饭，所以我们就不需要买这么多食物。
【29、 Sorry, I am too busy now、 If I ____ time, I would certainly go for an outing with you、A、 have hadB、 had hadC、 haveD、 had【答案】D【考点】此题考查条件状语从句中的虚拟语气。
【解析】从句中用一般过去时表现在的假设。
动词的时态条件状语从句中的虚拟语气一般过去式表对现在的假设【xx重庆卷】25、-____you interrupt now? Can’t you see I’m on the phone?--- May I take this magazine out?---- No, you mustn’t、3、 must用于一般疑问句的时候，肯定回答应该用yes, please或者I’m afraid so, 其否定回答应该用needn’t或者don’t have to。
情态动词复习学案
情态动词的用法复习与巩固学案一、概念：情态动词属于_____动词，它们有具体的意义，但不能______使用，其后必须接_____动词一起构成谓语。
其否定形式为__________,一般疑问句形式为___________________.二、对比下面几组句子中同一情态动词的用法，并完成相关练习。
Group1. Can & CouldcanA. She can speak English.B. A wise man can sometimes make a mistake.C. Can I smoke here?D. Can the news be true?He can’t be at home because I saw him in his office just now.He didn’t study at home, so he couldn’t have passed the exam.can的用法及意义有1.________________________2.____________________3._____________________________4.________________________________couldA. He said he could drive a car.B. Could you help me with my English? -- Yes, I can.could的用法及意义1._____________________ 2. ____________________________【对比】1) can(could)与be able to的区别：Will you be able to come tonight?I am sorry I haven’t been able to answer your letter.He was good at swimming, so he was able to save himself in the flood.区别1_______________________________ 2____________________________________ {翻译划线部分}I can not help but admit that you are right. ____________________The teacher can’t help laughing________________________ Group2. May vs MightmayA. —May I smoke here?—Yes, p lease./No, you mustn’t.You may come at any time you like.B.He may be working in the office now.C.May you be happy/succeed.may的用法及意义1________________________ 2____________________________ 3___________________________________mightA. He said that I might borrow his bike.B. He might come today or tomorrow. I am not sure. /Might I borrow your bike? might 的用法及意义1___________________ 2_________________________Group3. Must & Have tomustA. I must finish the work today.—Must you go so soon?—Yes, I must. —No, I needn’t. / No, I don’t have to.B.We mustn’t waste our time.C.Must you play the piano so late?D.He must be very tired after the long distance run.He must have prepared the exam for you got such a high mark.must 的用法及意义1__________________ 2_______________________ 3_______________________ 4 _______________________________【注意】have to 与must 的区别：We must try to do the work well.Because there was no bus, we had towalk home.must 侧重指___________的必要；have to侧重指______________“不得不”。
高中英语语法复习学案-情态动词
高中英语语法复习导学案——情态动词一、语法特征【题组训练】改正下列句子中的错误1.Simple measures such as hand washing can to limit the spread of disease.2.Experts have warned that many people may aren’t getting enough Vitamin D.3.The nation musts limit land development.4.With her help, he ought not have any problem.5.I wondered how he dared to say that to the teacher.6.【总结】1. 情态动词+ ________ 一起构成句子的谓语，不能单独使用2. 情态动词后直接加_____ 构成否定式3. 情态动词没有____和__的变化4. 有些情态动词具有特殊性：ought to; have to; dare; need 等二、用法要点【题组训练】1. He is a native speaker of English, so he __________ of course speak English quite well.2. I am starving to death. I __________ eat two bowls of rice now.3. If you have a good sleep, you __________ work out this problem tomorrow.4. She __________ sing like an angle when she was a child.5. The fire spread through the hotel very quickly but everyone __________ get out.【注意】表示过去某一次的能力，即过去某时刻具有做某事的能力并施展了能力的时候，只能用was / were able to(二) 表示可能性（推测）【观察】1) Accidents can happen on such rainy night.1. 客观或理论上的可能性：________ 用于肯定句中。
【范文】XX届高考英语情态动词语法专题教案
XX届高考英语情态动词语法专题教案XX年高三一轮复习金子般的学案语法部分：情态动词（新人教版）情态动词表示说话人的语气和情绪，本身词义不全，不能单独作谓语，后面必须与动词原形一起构成谓语。
情态动词没有人称和数的变化，有的情态动词有过去式。
常见的情态动词有can,could,may,might,must,haveto,shall,should,will,w ould,oughtto,need,dare,usedto等。
一、情态动词的基本用法can,could的用法【完成例句】[]他妈妈会说法语。
Hismothercan/couldspeakFrench.【结论1】表示体力或脑力所产生的能力。
【翻译句子】mancan/couldnotlivewithoutair.人没有空气不能呼吸。
【结论2】表示客观的可能性。
【翻译句子】couldyouwaitafewdaysforthemoney?钱你可以再等几天吗？couldyoubehereateighto'clocktomorrowmorning?你能明天早上8点钟到这儿吗？【结论3】表示请求、建议，用could比can语气更委婉。
【翻译句子】could/canIborrowyourreferencebooks?我可以借下你的参考书吗？youcansmokeintheentrancehall.你可以在入口大厅抽烟。
【结论4】表示允许、许可，用could比can更委婉客气。
【疑难1】canitbetrue?youcan'tbeserious!oh,dear,whatonearthcanthismean?【疑难剖析1】否定句、疑问句和感叹句中，can表示怀疑、惊异、不相信的态度。
【疑难2】Theywereabletoputoutthefirewithoutanyhelpfromthefir efighters.【疑难剖析2】表示“经过努力后终于能……”，用beableto。
高考英语 语法复习 专题8 情态动词和虚拟语气 精品导学案(含解析)
高考英语语法复习专题8 情态动词和虚拟语气精品导学案（含解析）情态动词主要用来表示说话人的情感、态度等，是中学英语语法的重点，也是高考的热点，是单项填空必考的一个知识点。
情态动词在近五年高考中主要考查四点：情态动词表示推测和可能性的用法；情态动词与虚拟语气；情态动词表达“情感、态度、语气等”；情态动词表示“必要性”等方面的用法。
虚拟语气的考点主要集中在名词性从句、条件句中的用法，以及错综条件句中虚拟语气的应用。
一、情态动词表推测的用法注意：should (ought to)表示推测是高考考查的重点和难点。
如：—When can I come for the photos？I need them tomorrow afternoon. —They ________ be ready by 12：00.A．can B．should C．might D．need【解析】B A项表示推测时常用于否定句和疑问句中。
C项表示推测语气不太肯定。
should意为“按理说，理应”，既回答了顾客的询问，不失礼貌，又为照片有可能尚未洗好，顾客到时取不到留下了回旋的余地，体现了店主的精明与用词经过仔细推敲。
二、情态动词的其他用法1．can, could, may, might2.must, should3. need, dare4.shall/will/would4.shall/will/would4.shall/will/would二、情态动词＋have done四、虚拟语气虚拟语气表示说话人所说的话不是事实，而是一种假设、愿望、怀疑或推测。
1．虚拟语气在条件句中的用法If it were to rain tomorrow, I should not drive my car. 如果明天下雨的话，我就不开车了。
(明天的情况还不知道)If I had done it in time, I should have had a good time. 如果我及时做的话，日子就好过多了。
情态动词高三复习学案
情态动词一、表能力的情态动词can / could/ be able to1．2．3．二、表许可的情态动词can, could, may, mighte.g. ----I hear you’ve got a set of valuable Australian coins. _______ I have a look?----Yes, certainly.A. DoB. MayC. shallD. Should三、表可能的情态动词can, could, may, might1.e.g1.e.g2. ----I’ve taken someone else’s green sweater by mistake.----It ______ Harry’s. He always wears green.A. has to beB. will beC. mustn’t beD. could bee.g3. Helen ______ go on the trip with us, but she isn’t quite sure yet.A. shallB. mustC. mayD. can2．e.g.1.e.g2. The World Wide Web is sometimes jokingly called the World Wide Wait because it _____ bevery slow.A. shouldB. mustC. willD. can3.4.e.g. He can’t be in the classroom.He may not be in the classroom.四、表请求的情态动词will, would, can, could, 其中would, could更委婉，更客气五、表意志的情态动词shall, will1.e.g. “The interest _____ be divided into five parts, according to the agreement made by both sides,” declared the judge.A. mayB. shouldC. mustD. shalle.g.e.g. ----Write to me when you get home.----______.A. I mustB. I shouldC. I willD. I can六、表必须的情态动词must 和have to1.2.e.g. John, look at the time. ______ you play the piano at such a late hour?A. MustB. CanC. MayD. Need3.e.g. ----Who is the girl standing over there?----Well, if you ______ know, her name is Mabel.A. mayB. canC. mustD. shall4.e.g. Tom, you mustn’t leave all your clothes on the floor like this!5.e.g. ----May I take the magazine out? ----No, you mustn’t.七、情态动词+ have done1. must have donee.g.2. should / ought to + have donee.g. ----I’ll tell Mary about her new job tomorrow. ----You _____ her last week.A. ought to tellB. would have toldC. must tellD. should have tolde.g. I was really anxious about you. You ______ home without a word.A. mustn’t leaveB. shouldn’t have leftC. couldn’t have leftD. needn’t leave3. can / could + have donee.g. My English-Chinese dictionary has disappeared. Who ______have taken it?A. shouldB. mustC. couldD. woulde.g. ----There were already five people in the car but they managed to take me as well.----It ____ a comfortable journey.A. can’t beB. shouldn’t beC. mustn’t have beenD. couldn’t have been* could +have done还可表示过去本来可能做而实际上没能做某事的责备、遗憾等e.g. ----I stayed at a hotel while in New York. ----Oh, did you? You _______ with Barbara.A. could have stayedB. could stayC. would stayD. must have stayed4. may / might + have done 可能已经做过e.g. Sorry, I’m late. I _____ have turned off the alarm clock and gone back to sleep again.A. mightB. shouldC. canD. will* 本应/可以。
高考英语二轮复习 情态动词和虚拟语气学案
学习目标：1自主学习创新教程情态动词和虚拟语气内容。
2分析历年热门考点进行实战演练。
学习难点：3各类从句中的虚拟语气一、复习时需注意的要点（一）情态动词1、情态动词在句中没有人称和数的变化。
2、含有情态动词的句子改为否定句或疑问句不必加助动词，只需要将情态动词置于主语前，或在情态动词后加上not。
例如：Must I write a letter to cheer him up?You needn’t wait for me.3、情态动词的过去式，例如can—could，may—might。
但是少数情态动词只有过去式，例如used to表示过去常常。
must的过去式往往用had to代替。
4、情态动词后还可接不定式的进行式、完成式和被动式。
例如：He can’t be doing his homework now. 他现在不可能在做功课。
He must have attended the meeting last night. 昨晚他一定参加了会议。
（二）虚拟语气1、在if条件句中，如果含有were , should或had等助动词，if可以省去，句子用倒装。
例如：Were I you , I would buy this reference book.2、should与would都可以用于if条件句的主句中，但should一般只用于第一人称，would用于所有人称。
例如：If you were here , I would tell you the news .3、某些条件可以用介词短语without… , but for 等来表示。
例如：Without your help , I could not have succeeded in passing the exam .4、有时句子通过but或otherwise等词来表示真实与虚拟的转换，在这种情况下，只有不真实的部分用虚拟式。
例如：I was ill yesterday；otherwise I would have played football with you .But for the heavy rain , we would have gone to the concert .5、有suggest等词的相应的名词组成的同位语从句及表语从句用虚拟式。
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情态动词
一、表能力的情态动词can / could/ be able to
1．
2．
3．
二、表许可的情态动词can, could, may, might
e.g. ----I hear you’ve got a set of valuable Australian coins. _______ I have a look?
----Yes, certainly.
A. Do
B. May
C. shall
D. Should
三、表可能的情态动词can, could, may, might
1.
e.g1.
e.g2. ----I’ve taken someone else’s green sweater by mistake.
----It ______ Harry’s. He always wears green.
A. has to be
B. will be
C. mustn’t be
D. could be
e.g3. Helen ______ go on the trip with us, but she isn’t quite sure yet.
A. shall
B. must
C. may
D. can
2．
e.g.1.
e.g2. The World Wide Web is sometimes jokingly called the World Wide Wait because it _____ be
very slow.
A. should
B. must
C. will
D. can
3.
4.
e.g. He can’t be in the classroom.
He may not be in the classroom.
四、表请求的情态动词will, would, can, could, 其中would, could更委婉，更客气
五、表意志的情态动词shall, will
1.
e.g. “The interest _____ be divided into five parts, according to the agreement made by both sides,” declared the judge.
A. may
B. should
C. must
D. shall
e.g.
2.
e.g. ----Write to me when you get home.
----______.
A. I must
B. I should
C. I will
D. I can
六、表必须的情态动词must 和have to
1.
2.
e.g. John, look at the time. ______ you play the piano at such a late hour?
A. Must
B. Can
C. May
D. Need
3.
e.g. ----Who is the girl standing over there?
----Well, if you ______ know, her name is Mabel.
A. may
B. can
C. must
D. shall
4.
e.g. Tom, you mustn’t leave all your clothes on the floor like this!
5.
e.g. ----May I take the magazine out? ----No, you mustn’t.
七、情态动词+ have done
1. must have done
e.g.
2. should / ought to + have done
e.g. ----I’ll tell Mary about her new job tomorrow. ----You _____ her last week.
A. ought to tell
B. would have told
C. must tell
D. should have told
e.g. I was really anxious about you. You ______ home without a word.
A. mustn’t leave
B. shouldn’t have left
C. couldn’t have left
D. needn’t leave
3. can / could + have done
e.g. My English-Chinese dictionary has disappeared. Who ______have taken it?
A. should
B. must
C. could
D. would
e.g. ----There were already five people in the car but they managed to take me as well.
----It ____ a comfortable journey.
A. can’t be
B. shouldn’t be
C. mustn’t have been
D. couldn’t have been
* could +have done还可表示过去本来可能做而实际上没能做某事的责备、遗憾等
e.g. ----I stayed at a hotel while in New York. ----Oh, did you? You _______ with Barbara.
A. could have stayed
B. could stay
C. would stay
D. must have stayed
4. may / might + have done 可能已经做过
e.g. Sorry, I’m late. I _____ have turned off the alarm clock and gone back to sleep again.
A. might
B. should
C. can
D. will
* 本应/可以。
而没。
e.g. He ______ you more help, even though he was very busy.
A. might have given
B. might give
C. may have given
D. may give
5. needn’t + have done
e.g.。