英语语法大攻克--情态动词

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英语语法情态动词

情态动词也叫语气动词，表示说话人对所说动作的看法，认为它"可能"、"应当"、"必要"等。

情态动词不能单独作谓语动词，只能和动词原形一起构成谓语动词。

英语里的情态动词主要有：can (could), may (might), must, shall, will, would, need, dare, should, ought to。

情态动词在任何主语后没有人称和数的变化。

1. can 和could⑴表示能力Whales cannot live on land.A computer can't think for itself. 计算机不会独立思考。

He hurt his foot and couldn't play football.◆be able to 可用于多种时态，can和could只用于现在时和过去时。

He will be able to go with us this afternoon.I haven't been able to see the difference yet.◆如果表示"做到"，"设法干成了某事"，常用be able to …来表达（相当于managed to do sth. 或succeeded in doing sth. ）,而不用can /could。

With the firemen, they were able to escape from the burning house.We were able to get there before the meeting began.⑵表示可能性can表示可能性时，常用于疑问句和否定句中。

Can this be true? Can it be Mr. Black?He can't be at home. 他不可能在家。

英语语法讲义：情态动词

第四章情态动词（一）情态动词表示说话人对动作或状态的各种观点和态度，如需要、猜测、意愿或怀疑等。

情态动词有词义，但不完全，是所谓的“辅助性”动词，在句中不能单独充当谓语。

一、情态动词的特征和形式A. 情态动词的各种形式见下表：情态动词maymightcancouldmusthave toought towillwouldshallshouldneeddareused to否定式may notmight notcannot/can notcould notmust notdo not have toought not towill notwould notshall notshould notneed notdare notused not todid not use to简略否定式mayn't（老式英语，现在不常见）mightn'tcan'tcouldn'tmustn'tdon't have tooughtn't to （否定句中to可省略）won'twouldn'tshan't （只用于英国英语）shouldn'tneedn'tdaren'tusedn't todidn't use toB．情态动词除ought to, used to等外，后面只接不带to的不定式。

1．情态动词+doYou shouldn't be so careless. 你不该这样粗心大意。

Jessica told him yesterday she might not go on the trip.杰西卡昨天告诉他，她可能不去旅行了。

Difficulties can and must be overcome.困难能够而且必须克服。

2．情态动词+be doingShe must be listening to pop music.她肯定在听流行音乐。

英语语法大攻克--情态动词练习题

情态动词练习题( ) 1 John___ come to see us tonight, but he isn't very sure yet.A. mayB. canC. has toD. must( ) 2 They ___ do well in the exam.A. can be able toB. be able toC. can able toD. are able to( ) 3 -May I take this book out?-No, you___.A. can't B. may not C. needn't D. aren't( ) 4 You___ go and see a doctor at once because you're got a fever.A. canB. mustC. dareD. would( ) 5 -Can you speak Japanese?-No, I____.A. mustn't B. can't C. needn't D. may not( ) 1 -He___ be in the classroom, I think.-No, he ___ be in the classroom. I saw him go home a minute ago.A. can; may notB. must; may notC. may; can'tD. may; mustn't( ) 2 -Shall I get one more cake for you, Dad?-Thanks, but you___, I've had enough.A. may notB. must notC. can'tD. needn't( ) 3 Even the top students in our class can't work out this problem, so it be very difficult.A. mayB. mustC. canD. need( ) 4 He isn't at school. I think he ___ be ill.A. canB. shallC. mustD. has to( ) 5 ___ I take this one?A. MayB. WillC. AreD. Do( ) 1 The children___ play football on the road.A. can'tB. canC. mustn'tD. must( ) 2 You ___ be late for school again next time.A. mustn'tB. needn'tC. don't have toD. don't need to( ) 3 -Must I do my homework at once?-No, you___. A. needn't B. mustn't C. can't D. may not( ) 1 His arm is all right. He___ go and see the doctor.A. has not toB. don't have toC. haven't toD. doesn't have to ( ) 2 He had to give up the plan, ___ he?A. didB. didn'tC. doesD. doesn't( ) 3 They had to walk here, ___ they?A. mustn'tB. didC. didn'tD. hadn't( ) 1 He had better stay here, ___ he?A. didn'tB. don'tC. hadn'tD. isn't( ) 2 You'd better___late next time.A. not to beB. not beC. won't beD. don't be( ) 3 You'd better ___ your hair ___ once a month.A. had; cutB. had; cuttedC. have; cutD. have; cutted( ) 4 You___ ask that man over there. Maybe he knows the way.A. had better not toB. had not betterC. had betterD. had better not ( ) 1 -Shall we go and visit the History Museum next Sunday?A. Here you areB. Sorry, I can'tC. Yes, pleaseD. Let me try ( ) 2 -Why don't you ask Mike to go with us?-Thanks, ___.A. I will B. I won't C. lean D. I may( ) 3 -___ I take the newspaper away?-No, you mustn't. Y ou____read it only here.A. Must; canB. May; canC. Need; mustD. Must; must( ) 1 Excuse me. ___ you please pass me that cup?A. DoB. ShouldC. WouldD. Must( ) 2 ___ you like to have another try?A. CouldB. WillC. WouldD. Do( ) 3 -Would you like to go boating with us?-Yes, ___.A. I'd like B. I want C. I'd like to D. I do( ) 1 You___ worry about your son. He will get well soon.A. needn'tB. can'tC. mustn'tD. have to( ) 2 The poor man needs our help, ___ he?A. needB. needn'tC. doesD. doesn't( ) 3 -Must we do our homework first?-No, you___. You may have a rest first.A. mustn'tB. needn'tC. may notD. can't参考答案：1. 1-5 A D A B B2. 1-5 C D B C A3. 1-3 C A A4. 1-3 D B C5. 1-4 C B C C6. 1-3 B A B7. 1-3 C C C8. 1-3 A D B。

初中英语语法大全——情态动词

初中英语语法大全——情态动词情态动词用来表示说话人对某一个动作成状态的看法，态度，即说话人认为某事“可能、或许、应该“发生等。

情态动词和助动词一样不能单独作谓语，后面只他跟动词原形，没有人称和数的变化。

有些情态动词有过去式，但是它们并不完表示时间上的概念，有时只是表示某种语气。

常见的情态动词如下所示:used to ①过去习惯②习惯于can/could ①能力②可能③许可④推测had better 忠告may/might ①许可②推测③能力④祝愿⑤请求need 必要will/would ①将来②意愿③提议④习惯⑤推测ought to 义务shall/should ①意志②许可、命令③法律及规则④义务dare 敢于must ①责任、义务等②意志③推测④惊讶eg: He goes to hospital.他去医院看病了。

(表示一般事实)eg: He should go to hospital. 他应当去医院着病。

eg: He should not go to hospital. 他不应当去医院看病。

一、can/could的用法1.表示可能性(1) 表示说话者主观猜测的可能性时, can/could常用于否定句和疑问句中。

could 既可以表示过去的可能性，又可以表示现在的可能性，其语气更弱一些。

Who's the man over there? Is it Mr. Black? 那边那个男人是谁?是布莱克先生吗?--- It can't be him. He's much taller.不可能是他。

他更高一些。

(表示推测时用于否定句)eg: Could he still be alive after all this time? 过了这么长时间，他还可能活着吗? (表示推测时用于疑问句)(2)can用于肯定句中时表示理论上的可能性，即从理论上看有可但实际未必会发生。

有时指一时的情况，常意为“有时会”。

英语语法掌握情态动词

英语语法掌握情态动词情态动词是中国英语学习者的难点，情态动词误用也是中国英语学习者最常犯的四大错误之一。

不过，从现在开始，所有有缘看到这篇文章的朋友，从此将再没有情态动词使用上的烦恼。

小编在这里整理了相关知识，快来学习学习吧!英语语法掌握情态动词OP法是一种面向使用、面向功能的英语入门教程。

所有语言点的讲解、练习的设置都以真实使用为准则，以实现功能为导向。

这套教程结合了语料库语言学(corpus linguistics)、系统功能语法(systemic functional linguistics)、文体分析(genre analysis)和认知语言学(cognitive linguistics)的最新成果。

在对这些研究成果精心选择和编排的基础上，书先生和路夫人制作了这一套快速入门的教程。

本篇文章是OP教程的一小部分，目的是让朋友们一窥OP法在语言点解释上的威力。

在讲解中，我尽量避免使用专业术语，但熟悉语言学的朋友应该能看到系统功能语法和认知语言学的影响。

如果你看完这篇文章，对情态动词的用法能够恍然大悟，那你就应该相信OP法的也能够让你轻松学会英文其它语言点。

虽然创造这套教程用了我们好几年的功夫(仅仅是花在阅读各个领域经典著作的时间就是个惊人的数字，更不用说要从中抽取出适合学习者的内容并加以精心编排)，但如果能够让中国的英语学习者从此不再觉得英语是个难题，我们也算为中国的英语教育做出了贡献。

情态动词是干什么的?情态实际上是谓语动词的组成部分。

一个完整的谓语动词由三部分构成：情态+时态+语态，顺序也按此排列。

其中时态和语态是必须的(compulsory)，情态是可选的(optional)。

比如下句：It should have been finished long ago.在这个句子中，should是情态动词，have been表示动词为完成时态，而been done表明是被动语态。

请注意have been和been done的重合部分been，那是时态和语态的结合处。

英语语法大攻克--情态动词和系动词

2010中考英语真题分类汇编：单选情态动词和系动词(2010 .河北省卷,31. 1) -Do we have to finish our homework this afternoon? -Yes, you ________.A. mustB. canC. mayD. need【答案】A(2010湖南省娄底市5. 1) -Must I be in hospital for a week，Doctor? ?-No，you . You can go back home tomorrow.?A.mustn'tB.needn'tC. must?【答案】B(2010湖南省娄底市7. 1) -What do you think of the cake??-I like it very much. It tastes .?A.goodB.terribleC. well【答案】A(2010.江苏省盐城市3.1)The desk is not dirty.You_______clean it.A.mustn'tB.shouldn'tC.needn't C.can't【答案】C(2010.四川省内江市23. 1)-What is your mother going to do this Saturday?--I'm not sure.She_____go to see my grandmother.A.canB.mustC.may【答案】C(2010.四川省自贡市31. 1)-May we leave the classroom now?--No,you _________.You_________to leave until the bell rings.A.must;are allowedB.can't ,aren't supposedC.needn't ;aren't allowed【答案】C(2010山东省潍坊市20. 1)The cookies_______good .Could I have some more?A.tasteB.smellC.feelD.sound【答案】A(2010山东省潍坊市23. 1)-Is Jessica giving us a speech this evening?--No,it________be her.She________to Japan.A.mustn't ;has goneB.mustn't ;has beenC.can't ;has goneD.can't ;has been【答案】C(2010江苏省南京市6. 1)It's the library!So you________know shouting is not allo wed here.A.canB.mustC.needD.may【答案】B(2010.浙江省衢州市18. 1) - Shall we go for a picnic in the park this Saturday?- Oh, that _______ good.A. feelsB. looksC. tastesD. Sounds【答案】D(2010.浙江省衢州市24. 1) Boys and girls . don't forget your report . It ______ t oday .A. can't finishB. can't be finishedC. should finishD. should be finished【答案】D(2010.江苏省无锡市.8. 1)-Mr Smith must have been to your home this morning.--No,he______,because he didn't know my address.A.couldn'tB.can'tC.mustn'tD.may not【答案】A(2010.江苏省无锡市.9. 1)Though his grandmother lives ______,she never feels_ _______.A.alone;aloneB.lonely;lonelyC.alone;lonelyD.lonely;alone【答案】C(2010江苏省宿迁市9. 1)This piece of music _______ beautiful.A. looksB. soundsC. tastesD. smells【答案】B(2010年上海市36. 1)Is this a photo of your danguter?She looks _____in the pink dress!A.lovelyB.quietlyC.politelyD.happily【答案】A(2010年上海市45. 1)Everyone________go through the security check(安检)whe nenteri ng the World Expo Park.A.canB.mayC.mustD.ought【答案】C(2010·湖北省黄冈市，33，1)-Which T-shirt do you prefer?--The red one .It______more comfortable.A.tastesB.smellsC.feelsD.sounds【答案】C(2010.湖南长沙25. 1)-Must I finish my homework at school?--______.You can do it at home and hand it in next week.A.Yes,you mustB.No,you needn'tC.Yes,I can【答案】B(2010·江苏省扬州市，11，1)-Must I mop up the follr now?--No,you________.A.needn'tB.can'tC.shouldn'tD.mustn't【答案】A(2010四川省成都市33. 1)-The lake is said to be dry.Is that ture? --It _______.Look ,some kids are swimming in it.A.must be trueB.can't be trueC.may not be true【答案】B(2010·浙江省湖州市，19，1)-Is the man over there Mr. Brown? --It_____be him.He's much shorter.A.mustB.can'tC.needn'tD.may【答案】B(2010·山西省，26，1)______your American friend eat with chopsticks? -Yes, but he can't use them well.A. CanB.ShouldC. Must【答案】A(2010·湖北省武汉市，31，1)-Look at that girl! Is it Susan?--No, it _______ be her. She has gone back to her hometown.A. mustn'tB. can'tC. needn'tD. wouldn't【答案】B(2010·河南省，34，1)( )-It's such a long way! What shall I do?一You--take my car if you wantA willB mustC mayD shall【答案】C(2010·陕西省，26，1)-Must I finish my homework at school?--No,you_________.You can do it at home.A.can'tB.mustn'tC.needn'tD.won't【答案】C(2010·广西省梧州市，43，1)This is a secret between you and me.You_______tell it t o others.A.shouldB.mustn'tC.canD.may【答案】B(2010·山东省聊城市，28，1)-Dean,I hear you've got a set of Canadian stamps._______ _I have a look?--Of course .I'll fetch them for you.A.MayB.MustC.ShouldD.Need【答案】A(2010·湖北省十堰市，29，1)-Where's Jeff?--I'm not sure. He ______be playing football on the playground.A.needB.mightC.mustD.can【答案】B(2010·广西省梧州市，39，1)Song Zuying's voice is very sweet and her songs_____ver y beautiful.A.tasteB.soundC.smellD.feel【答案】B(2010·新疆省阜康市，25，1)( )-The winner of the race is a tall and thin boy with gl asses.--Then it_____be my friend,Mike,who looks like very fat.A.mightB.can'tC.don'tD.should【答案】B(2010·山东省莱芜市，30，1)--Listen! Is it Linda singing in the next room?--No, it __________ be her. She is still in Shanghai.A.can'tB.couldn'tC.may notD.might not【答案】A(2010·贵州省铜仁市，24，1)__This pair of shoes ____ belong to Jack. He likes this kind very much.- It ____ be his. It's too large for him.A. can; can'tB. may; needn'tC. must; mustn'tD. must; can't【答案】A(2010·福建省福州市，34，1)-Dad,must I do my homework now?--No.You________play games with your friends for a little while.A.wouldB.needn't D.may【答案】C(2010·湖北省黄石市，31，1) Teachers think students needn't do so much homework , but they _______ mal students do a lot in the past.A. have toB. mustC. had toD. Should【答案】C(2010·湖北省荆门市，29，1) You __▲ ____ smoke. You are only 14 and it isn't all owed.A. mustn'tB. don't have toC. needn'tD. won't【答案】A(2010·湖北省荆门市，30，1)The skirt is made of silk. It __▲ ____so soft, I like it.A. washesB. is washedC. is feltD. feels【答案】D(2010·湖北省襄樊市，34，1)- Can I go to the movie , Mum ?- Certaninly , But you ________ be back by ten o'clock .A. canB. mayC. mightD. must【答案】D(2010·黑龙江省鸡西市，34，1)( )―Can I take the magazines out?-No, sir. They ______ out of the reading-room. It's a rule.A. needn't be takenB. can't takeC. mustn't be taken【答案】C(2010·广西省定西市，22，1)( )--Who's that man? Is he Mr. Brown?--That be Mr. Brown. He never walks this way.A. can'tB. mustn'tC. mustD.can【答案】A(2010·广西省定西市，四，1)( )1.--Must I leave the room now?--No，you .A. needn'tB. can'tC. mustn'tD. couldn't【答案】A(2010·广西省桂林市，34，1)--- _____ I use your ruler, Lingling? --- Sure. Here you are.A. MayB. WouldC. NeedD. Must【答案】A(2010福建三明26. 1)-Whose jacket is it?--It_______be Wu Lei's .I saw him wear it just now.A.can'tB.mustC.may【答案】A(2010广西南宁33. 1)-Something ________terrible.What goes bad in the kitchen? --The meat.A.looksB.tastesC.smellsD.feels【答案】C(2010四川达州21.1) -Must I finish my homework right now?-No, you .A. needn'tB. may notC. mustn'tD. can't【答案】A(2010四川达州25. 1)This kind of paper soft.A. feelsB. tastesC. smellsD. sounds【答案】A(2010·天津市，44，1)-Can I wear any cothes I like to school?--No,you can't .You________wear a uniform.A.mightB.mustC.willD.would【答案】B(2010·青海省，宁夏，22，1)( ) ---Must I do the work today?---No, you _______. You may do it tomorrow.A. can'tB. mustn'tC. shouldn'tD. needn't【答案】D(2010·辽宁省沈阳市，9，1)Trees ____ fight air pollution.They are natural air conditio ners.A.shouldB.mustC.needD.can【答案】D(2010·江苏省镇江市，3，1)( )They _________ play football last Friday because Simon forgot to bring his football here.A. couldB. couldn'tC. can'tD. can【答案】B(2010·湖北省咸宁市，24，1) - Wow! You look different! You wear glasses.- Yes, I did. But now I am wearing contact lenses(隐形眼镜).A. couldB. mustC. used toD. would【答案】C(2010·江苏省连云港市，3，1)---__________ I have a ticket , please?---Sorry,sir. All the tickets were sold out ten minutes ago.A. MayB.NeedC.MustD.Should【答案】A(2010·浙江省杭州市，22，1)I'm feeling much better now so you ______ call the doct or.A. couldn'tB. wouldn'tC. can'tD. needn't【答案】D(2010·甘肃省兰州市，38，1)-May we leave the classroom now?-No, you ______. You ______ to leave until the bell rings.A. mustn't, are allowedB. don't have to, are supposedC. needn't, aren't allowedD. can't, aren't supposed【答案】D(2010·四川省眉山市，32，1)-- Can I tell Peter about the news?-- No, I don't want anyone else to know it. You keep it to yourself.A. mustB. needC. canD. may【答案】A(2010·四川省巴中市，42，1)You______be tired after playing sports for a long time wi thout a rest.A.mustB.needC.can't【答案】A(2010·江苏省苏州市，12，1)-I don't care what my teachers think.-Well，you________.A.couldB.wouldC.shouldD.might【答案】C(2010·浙江省东阳市，18，1)( ) 18. -Whose shirt is this?--It _______ be Li Lei's. It is too big for him.A. couldB. mustC. can'tD. might【答案】C(2010·台湾省，2，1)I put the fish in the ice box to keep it .(A) fresh (B) full (C) new (D) young【答案】A(2010·广东省，22，1)It doesn't look like rain, so you bring your umbrella with you.A. shouldn'tB. mustn'tC. can'tD. needn't【答案】D。

2022高考英语语法金点拨-情态动词

2022高考英语语法金点拨-情态动词一．情态动词的语法特点1）情态动词除ought 和have 外，后面只能接不带to 的不定式。

2）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。

二．情态动词的用法（Can/could、May/ might、Must、Shall/should、will/would、Dare、Need、ought to）（一）. Can1.差不多用法1）表示能力The parrot can speak three languages.2）表示要求/承诺Can/Could I borrow the book from the library.Yes.I can/No.I can’t。

(Could 不表过去式；只表语气更委婉，表要求只用于疑问句)3）表示可能性Shanghai can be very cold in March.2. Can 与be able to1）can could 表示能力；可能(过去时用could)2）表示过去成功地做了某事时，只能用was/were able to，不能用could。

He was able to flee Europe before the war broke out.= He managed to flee Europe before the war broke out.3）在否定结构中，二者能够互换。

3. can/could + have +p.p1）在否定、疑问句中表示“对过去发生行为的可能性推测。

The door was lacked. She couldn’t have been at home.2）在确信句中表示“本来能够做而未做” You could have been more careful.4.习语：cannot / can’t（never/hardly）do…too …“越……越好，如何也只是分”。

You cannot be too careful when you drive a car.驾车时候，越小心越好。

情态动词知识点

情态动词知识点情态动词（Modal Verbs）是英语中的一类特殊动词，用于表示说话人的态度、观点、意愿、能力、推测等。

了解和正确使用情态动词对学习英语语法和提高语言表达能力非常重要。

本文将介绍情态动词的基本知识点，包括定义、用法及常见情态动词的具体用法和表示的含义。

一、情态动词的定义和用法情态动词是一类特殊的助动词，常用的情态动词有can、could、may、might、must、shall、should、will、would等。

情态动词有以下几个特点：1. 情态动词本身没有词义，不能单独用作谓语，后面需加动词原形来构成句子。

2. 情态动词本身没有人称和数的变化。

3. 情态动词没有时态的变化，表示的是一种情态或态度，并不表示动作的时间或进行的状态。

情态动词主要用于以下几个方面的功能：1. 表示能力和可能性：can、could、may、might、must；2. 表示推测和可能性：may、might、could；3. 表示意愿和请求：will、would、shall、should；4. 表示命令和建议：shall、should、will、would；5. 表示义务和必要性：must、should。

二、常见情态动词的具体用法和含义1. can/could:- 表示能力、技能：I can speak English fluently.- 表示允许：Can I use your computer?- 表示请求：Could you please help me carry this bag?- 表示推测：He could be at home.2. may/might:- 表示允许、请求、建议：May I come in? Might I suggest a different approach?- 表示推测、可能性：She may be busy. It might rain later.- 用于虚拟语气：If I had more time, I might go on vacation.3. must:- 表示必须、肯定：You must follow the rules.- 表示推测、非常有可能：He must be tired.- 表示责任、命令：You must finish the report by tomorrow.4. shall/should:- 表示建议、意愿、命令：Shall we go for a walk? You should see a doctor.- 表示期望、推测：The train should arrive soon.5. will/would:- 表示意愿、决心：I will help you with the project.- 表示请求、邀请：Would you like to join us for dinner?- 表示推测、意愿、假设：She would probably be upset if you didn't go.三、注意事项1. 情态动词后面的动词原形不带to。

情态动词英语语法讲解

情态动词英语语法讲解情态动词英语语法讲解本文题目：高考英语语法复习讲解：情态动词英语语法讲解根据以往英语取得高分同学的经验和海文英语辅导名师的建议，他们都一致认为英语语法和词汇是学好、考好英语的重要基础，其实完形填空是对语法、词汇的综合考查，但更关键的是学好此部分有助于对英语句子结构的分析和理解，有助于学生掌握灵活多变的句式，这样不仅有助于学生做好阅读理解，而且有助于学生做好英译汉，写好作文。

因此，我们在此编写了有关重点语法的知识点，并将陆续登出，同时将刊登一些试题。

希望同学们认真掌握，切不可因不靠它们而忽视了对英语基础知识的掌握。

(一)情态动词一.情态动词的现在完成式的用法情态动词现在完成式主要有两个功能：表示已经发生的情况和表示虚拟语气。

在这两个方面must/mustn’t,;can/cann’t;need/needn’t;may/mayn’t;might/ mightn’t;should/shouldn’t;ougtht等情态动词+完成式表示的意思是有一定区别的1.表示已经发生的情况。

1)musthave+过去分词，表示对已发生情况的肯定推测，译为“(昨天)一定……”。

如：MypainapparentthemomentIwalkedintotheroom,forthefirstman Imetaskedsympathetically:”Areyoufeelingallright?”[A]mustbe[B]hadbeen[C]musthavebeen[D]hadtobe(答案为C)2)can’t/couldn’thave+过去分词，表示对已发生情况的否定推测，译为“(昨天)一定没……”。

如：Marymyletter;otherwiseshewouldhaverepliedbeforenow.[A]couldn’thavereceived[B]oughttohavereceive d[C]hasreceived[D]shouldn’thavereceived(答案为A)3)may/mighthave+过去分词，表示对已发生的事情做不肯定、可能性很小的推测，或事实上根本没发生，译为“也许……”。

初中英语语法大全：情态动词

初中英语语法大全：情态动词I. 情态动词基本用法：在英语中主要的情态动词有can (could), may (might), must, have to, need , ought to, dare (dared), shall (should), will (would) .1．情态动词的特征（1）情态动词本身有词义，但词义不完成，因此不能单独作谓语，只能和其他的动词原形一起构成谓语。

（2）情态动词后接的动词不定式一律不带to。

（3）情态支词不随人称变化而变（即不管是何人称，后面接的情态动词都一样）。

（4）含有情态动词的否定都是由“情态动词+not”构成的，如：can-can not may-may not need-need not (5)含有情态动词的疑问句的构成May I come in?我可以进来吗？Can you lend me some money?你能借给我一些钱吗？注意：含有have to 的句子变成疑问句时不同。

如：I have to go today,今天我必须走，Do you have to go today?你今天必须走吗？2．情态动词的用法（1）Can的用法①表示体力或脑力方面的“能力”Can you drive?你会开车吗？Can you speak English?你会说英语吗？Can you lift heavy box?你能将这个重箱子拎起来吗？②表示客观条件允许You can skate on the lake.(The ice is thick enough.)你可以在湖面上滑冰了（冰层够厚的了）The airplane can take off now.(The storm has stopped.)飞机可以起飞了（暴风雨停了）You can’t park your car here.你不能在此停车③can用在否定句和疑问句中时，有时表示说话人的怀疑，惊异、猜测或不肯定：no, no, it can’t be true.不，不，这不可能是事实How can you be so careless!你怎么会这么粗心He can’t be in the library。

情态动词英语语法知识点汇总

情态动词英语语法知识点汇总情态动词(Modal verbs)本⾝有⼀定的词义，表⽰语⽓的单词。

但是不能独⽴作谓语，只能和动词原形⼀起构成谓语。

!以下是店铺为⼤家编辑的情态动词英语语法知识点汇总，希望⼤家喜欢。

1 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。

1 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。

2 ⽐较can 和be able to1)can　could 表⽰能⼒;可能 (过去时⽤could),只⽤于现在式和过去式(could)。

be able to可以⽤于各种时态。

They will be able to tell you the news soon. 他很快就能告诉你消息了。

2)只⽤be able toa. 位于助动词后。

b. 情态动词后。

c. 表⽰过去某时刻动作时。

d. ⽤于句⾸表⽰条件。

e. 表⽰成功地做了某事时，只能⽤was/were able to，不能⽤could。

He was able to flee Europe before the war broke out.= He managed to flee Europe before the war broke out.注意：could不表⽰时态1)提出委婉的请求，(注意在回答中不可⽤could)。

--- Could I have the television on?--- Yes, you can. / No, you can't.2)在否定，疑问句中表⽰推测或怀疑。

英语语法大攻克--to do与doing

下列动词或词组后面都可以接doing:admit 承认appreciate 感激avoid 避免complete完成consider认为delay 耽误deny 否认detest 讨厌endure 忍受enjoy 喜欢escape 逃脱fancy 想象finish 完成imagine 想象mind 介意miss 想念postpone推迟practice 训练recall 回忆resent 讨厌resume 继续resist 抵抗risk 冒险suggest 建议face 面对include 包括stand 忍受understand 理解forgive 宽恕keep 继续admit to、prefer…to 、be used to 、lead to 、devote oneself to 、object to stick to 、no good 、no use 、be fond of 、look forward to 、be proud ofbe busy 、can't help 、be tired of 、be capable of 、be afraid of 、think of burst out 、keep on 、insist on 、count on 、set about 、put off 、be good at take up 、give up 、be successful in需要省略to的不定式的情况有：1）情态动词（除ought 外）后。

2）使役动词let, have, make后，感官动词see, watch, look at, notice , observe, hear, listen to, smell, feel, find 等后。

注意：被动语态中不能省去to。

例如：I saw him dance. 我看见他跳舞。

=He was seen to dance.The boss made them work the whole night. 老板让他们整夜干活。

初中英语语法专题讲座06——情态动词

如果表示将来具备的能力，要用will be able to。例如：If I have a good sleep, Iwill be able todo the problem.假如我睡个好觉，我就能做那道题目了。
⑵表示许可，主要用于口语，书面语一般用may。例如：Canwe go home now, please? — No, youcan’t.我们可以现在就回家吗？——不可以。Youcanonly smoke in this room.你只能在这间房间里抽烟。Youcan’tkeep the library books for more than a month.图书馆的书借期不可超过一个月。
6.had better的基本用法：
had better常略作’d better。现代语法认为它是一个助动词，因为它后接不带to的动词不定式。had better do sth意思是“最好做某事；还是做某事比较好”。例如：Wehad betterstart at once.我们最好马上出发。You’d betterget some sleep.你最好睡一会儿。You’d better notdo that again.你最好别再做那件事。Whathadwebetterdo now?我们现在怎么做才好呢？Hadn’twebettertell her the truth?我们是否最好不告诉她真相?
8.could, should, would, might表示推测：
①. must多用于肯定句中表示把握性极大的推测,意思为“一定、肯定”。如:You have worked hard all day. You must be tired.你已辛苦工作一整天了,一定累了。The book must be his. His name is on the cover.这本书一定是他的,封面上写着他的名字。

情态动词英语语法知识精讲

情态动词英语语法知识精讲情态动词(modal verb)本身有词义，表示说话人的语气或情态，但词义不完全，不能单独用作谓语动词，一般只能和动词原形一起构成谓语动词。

小编在这里整理了相关资料，希望能帮助到您。

特征1)情态动词(modal verb)本身有词义，表示说话人的语气或情态，但词义不完全，不能单独用作谓语动词，一般只能和动词原形一起构成谓语动词。

2)情态动词所表示的情态有：命令、允诺、请求、拒绝、愿望、愿意、义务、必要、可能、能力、敢于、需要等。

3)情态动词(ought 除外)和助动词 shall，will，should，would 一样，后面的动词不定式一般皆不带。

形式变化1)没有人称和数的变化，第三人称单数的现在时也无变化。

如：I can We canYou can You canHeThey canShe canIt2)有些情态动词有过去式，有少数过去式和它的原形相同。

a)有过去式的情态动词有：may -- wouldcan ―― couldmay ― ― nigh tshall -- shouldhave to -- had tob)过去式不变的情态动词有：must - must (或 had to)ought to - ought toneed---needdare - dare(亦可用 dared)3)大多数情态动词后面可用动词的进行式、完成式和被动形式，如：can(may，must)be doing，can(may，must) have done，can(may，must)be done 等。

否定式情态动词和助动词一样，后面可直接跟否定词not。

现将情态动词的否定式及其否定式的简略式(简略式用于口语中)列举如下：shall not--shan't [FB:nt]will not---won't [wEunt]can not-can't [kB:nt]must not-mustn't [5mQsnt]should not-- shouldn'twould not-- wouldn'tcould not-- couldn'tdare not- daren't [dZEnt]need not-- needn't在疑问句中的用法情态动词在疑问句中的用法和助动词相同。

高考英语语法专攻-《情态动词》-考点归纳+针对性练习

高中英语语法专攻-《情态动词》【考点1-can&could】·can和could 表推测对现在或将来的推测，两者均可用，但can 通常只用于否定句或疑问句中，一般不用于肯定句，而could则可用于肯定句、否定句和疑问句；对过去的推测，应在can,could 之后接动词的完成式，且此时can仍只用于否定句或疑问句，不用于肯定句；而could 则可用于各种句型。

如：Can [Could] this be true? 这能是真的吗Where can [could] he have gone? 他能到哪里去了呢She can’t [couldn’t] have left so soon. 她不可能走得这么早。

He could have gone home. 他可能已回家了。

【注：could后接动词的完成式，除表示对过去的推测外，还可表示过去没有实现的可能性（即某事本来可以发生，却没发生），或委婉地责备某人过去应该做某事而没有去做（此时不用can）。

】如：You could have started a little earlier. 你本可早点动身的。

You needn’t have co oked it. We could have eaten it raw.你其实可以不煮熟（它），我们（本来）可以生吃。

·can和could表允许表示现在的允许时，若是请求别人允许自己做某事，两者均可用，但用could 语气更委婉；若是自己允许别人做某事，一般只用can，而不用could。

如：Can [Could] I come in? 我可以进来吗“Could [Can] I use your pen? ” “Yes,of course you can.”“我可以借用你的钢笔吗?”“当然可以。

”（不能说Yes,you could.)表示过去的允许时，若表示过去一般性允许（即表示某人随时都可以做某事），用could；若表示在过去某一特定情况下允许进行某一特定的活动，则不用could。

英语语法大攻克--情态动词

情态动词常见的情态动词有：can 能may 可以will，would （表意愿）need 需要dare 敢must 必须have to 不得不shall，should 应该（表义务）ought to 应该1.can，could 的用法1.1表能力，有“能”、“会”、“能够”的意思例如：Can you drive a car? 你会开车吗？-----Yes, I can. 我会。

-----No, I can't. 我不会。

1.2表允许，在口语中代替may，有“可以”的意思例如：Can I use your bike?我可以用你的自行车吗？1.3表示可能性，常用于否定句和疑问句例如：Can it be true?那会是真的吗？Today is Sunday. He can't be at school.今天是星期天。

他不可能在学校里。

1.4过去式could表示的语气更加委婉、客气例如：Could I come to see you tomorrow?明天我可以来见你吗？1.5 can 和be able to 的比较1) can 只有一般现在时和一般过去时两种时态(could)，其他时态要用be able to的形式例如：I haven't been able to get in touch with her.我一直没能和她联系上。

2) 通常can 和be able to 可以互换例如：He will come if he can.如果可能的话，他一定会来。

2.may，might的用法2.1表示许可或征求对方的许可，有“可以”的意思。

例如：You may go now.你可以走了。

May I use your computer?我用一下你的电脑可以吗？2.2回答以may开头的疑问句有如下表达法：例如：May I smoke here? 我可以在这儿抽烟吗？-----Yes, you may.-----Yes, please.------No, you can't.------No, you mustn't.------No, you'd better not.2.3表示猜测，通常只用于陈述句例如：You may be right.你可能是对的。

英语语法：情态动词

英语语法：情态动词情态动词(Modal verbs)本身有一定的词义，表示语气的单词。

但是不能独立作谓语，只能和动词原形一起构成谓语。

情态动词用在行为动词前，表示说话人对这一动作或状态的看法或主观设想。

小编在这里整理了相关知识，快来学习学习吧!英语语法：情态动词一、can和could1、can的用法(1)表示体力和脑力方面的能力。

(2)表示对现在的动作或状态进行主观的猜测，主要用在否定句和疑问句中。

(3)表示可能性，理论上的可能性，意为“有时候可能会”，可用于肯定句。

(4)表示允许，意思与may接近。

(5)表示说话人的推测、怀疑、惊异、猜测或不肯定等，主要用于否定句、疑问句或感叹句中。

(6)can的特殊句型cannot…too / enough表示“无论怎么。

也不过分”。

“越。

越好”。

cannot but+ do sth.表示“不得不，只好”。

2、could的用法(1)表示能力，指的是过去时间。

(2)表示允许，指的是过去时间。

(3)表示可能，可以指过去时间，也可以指现在时间，表示语气缓和。

(4)委婉客气地提出问题或陈述看法，指的是现在时间。

主要用于疑问句，回答时用can。

3、can与could的区别can表推测时只用于否定句和疑问句(could无此限制)。

couldn’t的可能性比can’t小。

4、can与be able to的区别(1)现在时：无区别，但后者不常用。

(2)完成时;can没有完成时，此时要用have(has,had)been able to。

(3)将来时：can没有将来时，要用will be able to。

(4)过去时：could表示一般能力，was/were able to 表示在具体场合通过努力成功做成某事的能力。

二、may 和might1、may的用法(1)表示询问或说明一件事可不可以做。

(2)表示一件事或许会发生或某种情况可能会存在，通常用在肯定句和否定句中。

注意：表示可能性时，can’t语气强，表示“不可能”，may not语气弱，表示“可能不”。