情态动词导学案

人教版新课标★英语★必修三语法情态动词导学案用户名：_________ 登陆日期：_________【学习目标】1.在本节课结束时，学生能够通过具体的语言情境理解并掌握情态动词的用法。

2.集中突破高考热点、难点。

【课程预习】朗读以下文章，体会情态动词的用法。

Passage 1 Always young青春常驻My aunt Jennifer is an actress. She must be at least thirty-five years old. In spite of this, she often appears on the stage as a young girl. Jennifer will have to take part in a new play soon. This time, she will be a girl of seventeen. In the play, she must appear in a bright red dress and long black stockings. Last year in another play, she had to wear short socks and a bright, orange-coloured dress. If anyone ever asks her how old she is, she always answers, 'Darling, it must be terrible to be grown up!'New words and expressions 生词和短语appear v. 登场，扮演stage n. 舞台bright adj. 鲜艳的stocking n. （女用）长筒袜sock n. 短袜参考译文我的姑姑詹妮弗是位演员，她至少也有35岁了。

尽管如此，她却常在舞台上扮演小姑娘。

Modal verbs（情态动词的用法）————课堂导学案一、Lead inWatch a video, then answer a question.---How does Mr. Bean like the man? --- _____________________二、教学过程Step 1: 复习情态动词用法一 5 tasks1.动词的种类：_________________ __________________________________ _________________2.情态动词的定义:___________________________________________________3.已经学过的情态动词：4-3-2①能、会____________ 也许，可能___________应该______________ 将会_________________②必须___________ 需要________________ 敢_______________③不得不_________ 最好_____________________4 情态动词的语法特征：①后接动词____________He can speak English.②无_____和______ 的变化They can speak English?③构成否定句时，在其后加______ 构成疑问句时，将其_____He can’t speak English Can he speak English?注意：have to 不遵循以上②、③规则，其有_____ _____的变化，疑问句也要借_____来完成。

如：They have to go home . She has to go home.They don’t have to go home. She doesn’t have to go home.Do they have to go home? Does she have to go home?④情态动词的肯定回答, 用开头的词来回答.--- May I go now? ---Yes, you may.⑤情态动词疑问句的否定回答，通常用相应的否定形式.---Can she swim?---No, she can’t.但may 和must 的一般疑问句的否定回答，分别用____________ ; _____________5. Have a try(小试牛刀)( )1. ---Must we clean the classroom before breakfast? ---No, you _____.A. can’tB. may notC. mustn’tD. needn’t( )2. ---Can you tell us the story in English? ---No, I_____.A. needn’tB. don’tC. won’tD. can’t( )3.---May I take the books out of the room?--- No, you ___.A. may notB. mustn’tC. needn’tD. don’t( )4. You _____ go there at once.A. hav en’t toB. doesn’t have to B. don’t have to D. not have toStep 2 情态动词表推（猜）测，4 tasks。

情态动词导学案考点：1.情态动词的特殊用法(can/shall/must/will/would/should)2.情态动词+have+ done)3.表推测的情态动词的用法4.情态动词的惯用形式难点：情态动词+have+ done教学过程：情态动词的常考用法：1.can / could (有能力做或能够发生) “能够”1）表示惊异、怀疑、不相信的态度（否定、疑问、惊叹）What can he mean?“究竟”2）惯用形式“cannot…too” cannot but do/can’t help but3) 表示常有的行为和情形。

“有时会”4）“可能”（否）How __ you say that you really understand the whole story if you have covered only part of the article?(02) A can B must C need D may 2. may / might1).允许、许可否定---mustn’t“可以”2).推测(肯,否) “可能”3).祝愿 May all your dreams come true!4).may/might as well 还是…好You may as well tell me the truth.(00) Sorry I am late. I ___ have turned off the alarm clock and gone back to sleep again. might / should /can / will3. Must1）必须，应该。

否定形式mustn‘t表示禁止2）否定回答---needn’t / don’t have to肯定回答---yes. You must.3) Have to 强调客观4) 偏要,硬要 Why _it rain?(03) Naturally, after I told her what to do , my daughter____ goand do the opposite! A may B can C must D shouldHe must be a teacher ,_____ he ? He must have gone home,______ he ?It must have rained last night, ____ it ?4. Shall1）用于第一、三人称疑问句中，表示说话人征求对方意见。

情态动词讲解一．概念引入情态动词表示一种情感和态度，是___________________(实义动词or 助动词)，它本身语义不完整，要和实义动词一起使用，后接动词的____________形式。

注：实义动词即行为动词，表示动作的动词，可单独使用做谓语。

与实义动词相对应的是非实义动词，包括（帮助构成时态、语态的）be动词，（帮助构成时态、强调、虚拟的）助动词（do / does / did, have / has / had）以及情态动词。

eg. I did a lot of homework today, and I felt satisfied.People do love to have holidays for various reasons.情态动词有_________________________________________________________________________________________________。

二．基础讲解can / could1. 表示_______________.eg. My grandma is 80 years old, but she can drive without glasses.2. 表示________________, could 可以代替can, 表示语气较为委婉。

eg. They asked whether they could smoke in the hall.Could you please pick me up at the airport at 5 p.m. next Monday?3. 表示推测或理论上的可能性，意为_________________.eg. I thought the story could not be true.Even an experience teacher can make mistakes.may / might1. 表示_______________, 它的否定形式可以用may not，但表示“强烈禁止”等意思时常用_______________.eg. May I turn up the radio a little?He said that I might use his telephone.2. 表示______________的推测, might 比may 的语气更弱。

情态动词李仕才课程目标一、学习目标1. 情态动词的大体用法。

2. 情态动词+have done的用法。

二、重点、难点重点：情态动词的大体用法。

难点：情态动词+have done的用法。

三、考情分析上述语法是高考的重点语法，历年考题中占有重要的地位，而且是高考试题的难点。

一般在单选中能占1-2分；咱们学习时应特别注意上述语法的学习及做题技能，并认真研究近几年的高考题。

知识梳理一、情态动词的大体用法考点1 can和could的大体用法【用法】1. can和could都可以表示能力；许可、建议、请求和推测；2. 在疑问句和否定句中表示“怀疑，猜想”或“可能性”；3. 若是要表示委婉的语气，可用could代替can，这时could再也不是can的过去式。

【例句】—Can she be in the computer center?或许她是在计算机中心？—No, she can’ t be in it.不，她不可能在里面。

Could I borrow your bicycle?我能借你的自行车用用吗？【考题链接】1. You don’t have to know the name of the author to find a book. You _____________ find the book by the title.A. mustB. needC. canD. would答案：C解题思路：句意：你没有必要必然通过作者的姓名来找到一本书。

你可以按照这本书的题目（书名）来找到这本书。

must“必需，一定”；need“需要”；can“可以，能够”；would“将会”，表过去的未来。

根据句意，只有C项符合题意。

2. —Could I speak to Mr. White?—I’m afraid he _______________ answer your call now. He is holding a meeting.A. can’tB. needn’tC. mustn’tD. shouldn’t答案：A解题思路：考查情态动词。

初中情态动词教案课程目标：1. 学生能够理解情态动词的概念和用法。

2. 学生能够正确运用情态动词进行造句。

3. 学生能够区分不同情态动词的含义和用法。

教学内容：1. 情态动词的概念和分类。

2. 情态动词的用法和注意事项。

3. 练习和应用。

教学步骤：一、引入（5分钟）1. 向学生介绍情态动词的概念，让学生初步了解情态动词。

2. 提问学生，了解他们对情态动词的已有知识。

二、讲解（15分钟）1. 讲解情态动词的分类，如can, may, must, could, might, should等。

2. 举例解释每个情态动词的用法和含义。

3. 强调情态动词的用法和注意事项，如情态动词后面要跟动词原形，情态动词不能和助动词连用等。

三、练习（15分钟）1. 让学生分组，每组选择一个情态动词，用这个情态动词造句。

2. 让学生互相交换句子，并判断句子的正确性。

3. 让学生在班级内分享他们的句子，并解释为什么使用这个情态动词。

四、应用（15分钟）1. 让学生写一篇小短文，运用所学的不同情态动词。

2. 让学生互相交换短文，并进行评价和修改。

3. 让学生在班级内分享他们的短文，并解释他们为什么选择使用这些情态动词。

五、总结（5分钟）1. 对本节课的内容进行总结，让学生巩固所学知识。

2. 回答学生的疑问，并进行解答。

教学评价：1. 观察学生在练习中的表现，了解他们对于情态动词的掌握程度。

2. 评价学生在应用环节的短文，了解他们能否正确运用情态动词。

3. 收集学生的反馈意见，了解他们对情态动词的理解和运用情况。

教学反思：本节课通过讲解、练习和应用等环节，让学生掌握了情态动词的概念和用法。

在教学过程中，要注意让学生充分理解和掌握情态动词的用法，并能够正确运用情态动词进行造句。

同时，要注重学生的实际应用能力的培养，让他们能够在实际情境中灵活运用情态动词。

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.。

情态动词导学案Teaching aims:Complete the basic understanding of the modal verb (can/ could/ may/ might/ will/ shall/ should/ must); students are able to master the function of “modal verbs+have done”Step1 Attention-raising input tasks:Material 1:M=Mum, S=Sara, P=Peter(When Sara came home from work, she found her mother in an anxious state.)S: What is wrong, Mum? You seem upset.M: It is your younger sister Jill. She should have been here an hour ago.S: Don’t worry, Mum! It is not all that late and she may not realize how late it is. I think she must be here soon.(Just then Sara’s brother Peter came into the kitchen.)P: What is up? Mum is on the phone and she seems as though she is going to cry.S: It is Jill. She should have reached home by now and Mum’s getting anxious.P: You need not feel so anxious Mum! You know what teenager girls are like. I am sure she can’t be in danger.M: I can’t help but be concerned. I have just rung Lucy and she said Jill left her outside the cinema ages ago to get the bus home. I think she must have trouble. If she is safe, she can’t stay outsides so long.P: Well, the bus service is not very frequent in the evenings. She may have missed one and is waiting for another. Have you tried phoning her on her mobile?M: Yes, but there is no reply. That made me even more worried. I think something must have happened to Jill.Do you think we should call the police?S: Calm down, Mum! You may make yourself ill. She may have switched her mobile phone off in the cinema and forgotten to switch it back again. Or it may need to be charged.(Later, the phone rang.)M: Oh, my Jill! Where are you? Why not answer my phone?J: Mum. My phone is missing. I think you must worry about me, so I lend the phone.M: Come back, it is too late. It may be left in the cinema.J: No, it can’t have been left in the cinema. I have gone and asked.…Material 21.If you won’t stop smoking, you can only expect to have a bad cough.2.Water will boil at 100℃. It won’t boil at under 100℃.3.Harriet will keep leaving her things all over the floor.1.Accidents can happen at any time.2.How can you be so careless?1.May I ask for a photo of your baby?2.May you be happy.1.A: Mom, can I have a word with you?B: OK, if you must.1.I did not expect he should behave like that.2.You should not have told her the news. She is crying now.Read material 1 and fill in the following blanksWhen Sara came back, she found Mum was in an anxious state. It turned out that Jill, the teenager sister, _____________home an hour ago. Sara comforted Mum that Jill _____________how late it is and _____________home soon. Peter also comforted Mum that she _____________ so worried and believed Jill _____________danger. Mum told them Jill’s friend Lucy and Jill went to the cinema and left there for a long time. She thought Jill _____________. If Jill was safe, she _____________outsides for that long. Peter guessed Jill ____________ the bus and was waiting for another. Peter suggested Mum made a phone call to Jill. Mum said Jill did not reply. Mum guessed something _____________to Jill. Sara told Mum to calm down and worried Mum _____________ herself ill. And Sara guess Jill _____________the phone in the cinema and forgotten to switch it back again or the phone _____________ to be charged. Later, Jill called and explained her phone was missing. She thought Mum _____________ about her and lent a phone to make the phone call. Mum thought the phone _____________ in the cinema and suggested they found it the next day. But Jill said it _____________ there because she had searched there.Read Material 2 and work out the meaning of the elicited part:Step2 explicit instruction of modal verbscouldn’t/can’t do/h ave donemust do/have done to express guessing moodmay/might do/have done“should have done” to express blameStep3 Grammaticality Judgment Task1.It might have given a serious shock to Mother, for her face suddenly turned as white as a sheet.2.A: I think the man over there must be Bob.a)B: It may be him. He has gone to Australia.3.She can’t be here. I saw her come in.4.A: Who’s singing in the next room?a)B: It must be her. She has gone to New York.5.A: Where’s Jeff?a)B: I’m not sure. He can be playing football on the playground.6.---- Can this book be yours?---- No, it can be mine. It must be his.7.They should have missed the plane, or perhaps they have been prevented from coming for some reason.8.Since the ground is white, it would have snowed last night.9. A computer can think for itself; it must be told what to do.10.I didn't hear the phone. I must been asleep.Step4 Communicative Activities1 Look at the following pictures. Can you guess what they are? In pairs discuss your guesses.A: I think the first picture could be ….B: Maybe, but I think it might be …..2 The class is given a dilemma situationYou have seen a good friend cheating in an important test, and asked to give guesses to account for his behavior and work out the solution. Students are directed to include modal verbs (might, should, must, can, could, etc) in their speech.Step5 Reflection on learning content and learning strategies1 Gives students feedbacks2 Give a sample version of step 4 and let students assess their own work.。

高一英语情态动词导学案【明确目标】1、掌握情态动词的用法2、能够运用所学情态动词知识进行熟练对话。

【自学指导】概说：情态动词表示说话人的语气和情态，需要，可能，愿意和怀疑等。

情态动词有一定的词义，但不完整，必须和主要动词的原形一起构成谓语。

常用的情态动词有：can, could, may, might, must, have to, ought to, need, dare, shall, will, should, would, be able to, etc.一. can , could, be able to用法I. 1) can 表示体力或脑力方面的能力，或根据客观条件能够做某事的能力。

A blind man can not judge color.He can speak five languages.2) 表示许可，在疑问句中表示要求，否定句中表示不许。

Can (May) I come in ?----- Can I use your dictionary?----- Of course, you can.3) 表示可能性，常用于疑问句和否定句中.Can it be true?Can the hall seat a thousand people?Someone is knocking at the door. Who can it be?She can’t be here.Mary can’t have gone there alone. 4) be able to与can 的比较A) 表示能力时可通用No one can / is able to do it.Can you come tonight? /Will you be able to come tonight?B) 表示经过努而成功地办到了某个具体的事情时，只能用be able to 不可用 can。

With the help of the firemen, they were able to leave the burning house.After years of hard work he was able to win the prize.2. could1) could 是can的过去时，除具有can的各种功能外，还可以用来比较委婉，客气地提出问题或陈述看法。

情态动词导学案教学目标：掌握will/would, shall/should/ought to 的用法一检测1 John ,look at the time you play the piano at such a late hour?A mustB canC mayD need2 I didn`t hear the phone 。

I asleep.A must beB must have beenC should haveD could have been3 She have left school ,for her bike is still hereA can`tB wouldn`tC needn`tD mustn`t4 --I can`t find my purse anywhere.—you it while shopping yesterdayA may loseB may have lostC can have lostD can lose5 Tom wasn’t a good runner, but he ______ catch up with us at last.A couldB canC was able toD is able to二will/ would 的用法1分析：I will do anything for you. 我愿为你做任何事。

If you will read the book, I´ll lend it to you. 如果你愿意读这本书，我会把它借给你。

They said that they would help us. 他们说他们愿意帮助我们。

归纳：will/ would 表示。

2 Will / Would you close the window? It´s a bit cold. 请你把窗户关上好吗？有点冷。

Would you turn down the radio? Tome is doing his homework.归纳：表示多用于疑问句。

Modal verbs 情态动词导学案陈艳红【学习目标】1.牢固掌握情态动词的基本意义和用法；提高运用解题能力。

2.通过合作探究，解决情态动词理解障碍；学会熟练语法知识解题的方法。

3.全力以赴，以激情投入学习，享受阅读的快乐。

【重点难点】：情态动词在语境中的运用。

【使用说明及学法指导】自学：20分钟课前自学导学案课前预习部分，独立完成预习效果检测。

【课前预习案】情态动词命题特点考点点击：情态动词主要用来表示说话人的看法、态度等，它是英语动词中最难把握的一类，也是每年高考必考内容。

命题热点：为情态动词的基本用法辨析，情态动词表示推测的用法辨析，情态动词在虚拟语气中的运用。

考查形式：主要体现在听力理解、单项填空和完形填空中。

热点一：情态动词的基本用法1. can/ could be able to①The fire spread through the hotel very quickly but everyone ______ get out.A. had toB. wouldC. was able toD. could②--- Could I use your computer?--- Yes, you ______.③Mr. Bush is on time for everything. How ______ it be that he was late for the opening ceremony？(2001上海春)A. canB. shouldC. mayD. must2. Must/ have to①Children under 12 years of age in that country ______be under adult supervision when in a public library.A. mustB. mayC. canD. need②Tom, you _____leave all your clothes on the floor like this！(2005全国II)A. wouldn’tB. mustn’tC. needn’tD. may not③—Who is the girl standing over there?—Well, if you ______ know, her name is Mabel.A. mayB. canC. mustD. shall④Tom, _____ you play the piano at midnight?A. mayB. canC. mustD. shall3. will/ would①I _____ often go fishing when I lived in the country.②Which would you rather _____(choose), go to the cinema or go for a meal?4. shall①“The interest(利润)______ be divided into five parts, according to the agreement(合同) made by both sides,”declared the judge.A. mayB. shouldC. mustD. shallshould①You can’t imagine that a well-behaved gentleman _____ be so rude to a lady.②_____it rain tomorrow, the meeting would be put off.③I ______ pay Tracy a visit, but I am not sure whether I will have time this Sunday.A. shouldB. mightC. wouldD. couldought toI ought to tell you something before you leave.变成否定句：______________________________________________________.变成一般疑问句：__________________________________________________5.need①—I don’t mind telling you what I know.—You ______. I’m not asking you for it.A. mustn’tB. may notC. can’tD. needn’t②I don’t think the windows _____ at this time of the night.A. needs cleanB. need cleaningC. need being cleanedD. need to clean6. may.---Might/Could I use your bike?--- Yes, you may/ can.（这儿不能用Might 或Could）---No, you can't. / ---No, you mustn't. / ---No, you'd better not.热点二：情态动词的推测性用法情态动词must, will, would, ought to, should, may, might用在肯定句中表示推测，其可能性程度按其排列顺序由强到弱，可以翻译成：“肯定，会，应该，可能”等意。

情态动词导学案情态动词是英语中的一类特殊动词，用来表示说话人对某种动作或状态的推测、看法、建议、命令、许可等情态意义。

情态动词包括can, could, may, might, must, shall, should, will, would, ought to 等。

在文章中，情态动词的使用非常灵活，可以根据具体语境表达出不同的含义。

一、情态动词can和could的用法1. 表示能力或可能性：e.g. She can speak three languages.（她会说三种语言。

）2. 表示允许或请求：e.g. Can I borrow your pen?（我可以借你的钢笔吗？）3. 表示可能性或推测：e.g. It can't be true.（这不可能是真的。

）4. could多用于过去时，表示过去的可能性或推测：e.g. She could have missed the train.（她可能错过了火车。

）二、情态动词may和might的用法1. 表示许可：e.g. You may leave early if you finish your work.（如果你完成了工作，你可以早点离开。

）2. 表示可能性或推测：e.g. It may rain later.（今天晚些时候可能会下雨。

）3. might常用于过去时，表示过去的可能性或推测：e.g. I thought I might have left my keys at home.（我以为我可能把钥匙忘在家里了。

）三、情态动词must的用法1. 表示必须或肯定：e.g. You must finish your homework before you go out.（你必须在外出之前完成作业。

）2. 表示推测：e.g. He must be at home now.（他现在一定在家。

）3. 表示责任或义务：e.g. We must help those in need.（我们必须帮助那些需要帮助的人。

情态动词一、情态动词的基本特征：•情态动词有一定的意义，表示说话人的语气或情绪•无人称和数的变化•有时态的变化，有时过去式变化是表达委婉或其他语气•通常接动词原形二、情态动词的三大考点：1. 基本用法2. 推测用法3. 虚拟用法1. 情态动词否定式的含义mustn’t 不准, 禁止needn’t 没必要( = don’t have to )can’t 不能; 不可能may not 不可以; 可能不shouldn’t 不应该( = ought not to )2. dare和need常用作实义动词，有时态、人称和数的变化，所不同的是，作实义动词时，在肯定句中，dare后面通常接带to的不定式，在否定和疑问句中，dare后面可接带to或不带to的不定式。

need 后可加不定式和动名词. 如:I dare to swim across this river. He does not dare (to) answer. The flower needs watering.四、情态动词表推测的用法小结1.Someone is knocking at the door. Who can it be?It may be Mrs. Lei. / It can’t be Mrs. Lei. / It must be Mrs. LL.2.It’s too late. I think they may/might have gone to bed.3.He must have been to that city before, for he knows a lot about the city.4.He can't have left on business, for I saw him just now in the library.5.He couldn’t have seen the film because he knew nothing about it.6.He must be reading books in the library now.1. should/ought to “按说应该”：表示预测或合乎理想的情况或结果。

情态动词导学案(一)教学目标：复习情态动词以及它基本用法教学重点：can/could, may/might, must 的用法情态动词是一种本身有一定的词义，表示说话人对某-动作或状态的态度,但不能单独作—，只能和动词原形连用(即情态动词+动词原形)，否定式构成是在情态动词后面加。

，情态动词无—和—变化, 气。

情态动词主要有下列：情态动词否定式否定缩写cancould)may not mayn'tmight not mightn'tmustshall Shan^tshouldwillwould would notoughtn't toneeddare Daren't情态动词的基本用法1. can (could)1) Two eyes can see more than one.两只眼比一只眼看得清。

Could the girl read before she went to school?这女孩上学前能识字吗？归纳：表示意思是"、会"2)He 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。

Can / Could I have a look at your new pen?我可以看一看你的新钢笔吗？肯定回答yes,you 否定回答No,you:归纳：表示意思是在语气上Could比can更加委婉。

3)Where can (could) they have gone to?他们会去哪儿了呢?He can't (couldn't) be over sixty.他不可能超过六十岁。

How can you be so careless?你怎么这么粗心？归纳：表示主要用于否定句、疑问句或感叹句中。

L4)表示可能(理论上或是逻辑判断上)。

You 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。

九年级英语下专题复习10情态动词学案【学习目标】1. 掌握情态动词在一般疑问句中的问与答。

2. 掌握情态动词表示猜测的用法。

【重点难点】情态动词can, may, must, ought to , will, shall, should, would , need, dare的用法【知识铺垫】情态动词表示说话人对某一动作或状态的态度,或表示主观设想。

情态动词有自己的词义,但不能单独作谓语,必须和不带to的动词不定式(ought除外)连用,没有人称和数的变化。

常用的情态动词有can, may, must, ought to , will, shall, should, would , need, dare。

【课堂探究】探究1 must和have to两者都表示“必须”的意思,但must含有说话人主观上的看法、态度；have to则表示客观上的需要。

【针对练习】When traffic lights are red. We _________stop and wait.A. mayB. canC. mustD. might.探究2 can和could 两者都可用来表能力, 意为“能够,会”；可用来表示许可(常用在口语中)或表示怀疑、惊异、不相信等态度(常用于否定句、疑问句或感叹句中)。

【针对练习】－Could I borrow your dictionary? －Of course you ____________.A. canB. mustC. shouldD. will探究3 shall用于第一、三人称疑问句表示征求对方意见；用于第二、三人称肯定句或否定句表示说话人给予对方的“禁止、命令、警告、允诺或威胁等”。

should用来表示建议、责任、义务时,可译为“应该,应当”,此时可用ought to替换；可用来表示惊讶、忧虑、赞叹等不满情绪(用在疑问句中)；还用来委婉地陈述自己的意见。

【针对练习】Schools _________allow students at least one hour a day for sports.A. wouldB. mightC. shouldD. could探究4 had better和would rather “had better+动词原形”意为“最好做……”,否定句式为had better not。