【最新】人教版高中英语必修三Unit1 情态动词精品学案
新课标人教版高中英语必修三 Unit1 精品学案
必修三Unit 1 Festivals around the world 单元要点一、根据句子的意思翻译或按要求填词。
1. take place / happen / occur / come about / break outtake place表示“发生、举行、举办”，一般指非偶然性事件“发生”，有某种原因或事先安排。
happen作“发生、碰巧”解，一般用于偶然或突发性事件。
occur作“发生、想到、突然想起”解，其意义相当于happen。
come about表示“发生、产生”，多指事情已经发生了，但还不知道为什么，常用于疑、否break out意思为“发生、爆发”，常指战争、灾难、疾病、火灾或者争吵等事件的发生1). Great changes have __taken place__ (发生) in our hometown during the past ten years.2). It occurred to me that (我突然想起) I saw him on my way home yesterday.3). I happened to see (碰巧看见) your sister crying on my way to school yesterday.I was in such a hurry that I had no time to ask what had happened to (介词) her?4). When the Second World War broke out (爆发), Tom was only a newborn infant.5). I’ ll never understand how it came about (发生) that you were late three timesa week.2. celebrate / congratulatecelebrate“庆祝”，后面跟某个节日或物。
高中必修选修学案必修BOOK3 UNIT 1语法导学案
You oughtn´t to smoke so much.你不应该抽这么多烟。
2）表推测，暗含很大的可能，语气较弱。
Han Mei ought to know his telephone number.韩梅该知道他的电话号码。
He may be at home.他可能在家。
She may not know about it.她可能不知道这件事。
He was afraid they might not agree with him.他担心他们可能不同意他的意见。
They might be having a meeting, but I´m not sure.他们有可能在开会，不过我不肯定。
4. shall
1）表征询意见，用于第一、第三人称疑问句。
Shall I get you some tea?我给你点茶好吗？
Shall the boy wait outside?让那男孩在外面等吗？
What shall we do this evening?我们今晚做什么？
2）表说话人的意愿，有“命令、允诺、警告、决心”等意思，用于第二、第三人称陈述句。
You mustn´t smoke while you´re walking around in the wood You could start a fie.在林子里走时勿吸烟，那样可能会引起火灾。
3）表示允许。
Can I have a look at your new pen?我可以看一看你的新钢笔吗？
He asked whether he could take the book out of the reading—room.
2020年人教版高中英语必修三Unit1语法导学案 无答案
2020学年人教版高中英语必修三Unit1 Festivals around the worldGrammar——The usage of Modal Verbs编写人: 审核：全体英语组编写时间：【学习目标】学习情态动词的用法：——can\could, may\might, will\would, shall\should, must\can’t 【学习重点】掌握并使用情态动词【学习难点】如何在不同的语境中学会使用不同的情态动词【学法指导】①注意仔细观察所给例句的结构②通过反复练习掌握掌握其用法Learning Procedures:Step1 Lead-inEnjoy a song again and again, and then fill in the blanks using the proper model verbs.I want to be with youThere are things that be done That are not yet begunThings that I doWhen I want to be with youAlthough we be far apart You be with be in my heart No one else doI just want to be with youI want to be with youyou hear me?I need you near meI want to be with you I need you near me, my loveThe two of us be one Mother of my sonNo one else doI just want to be with youI want to be with you_____ you hear me?I need you near meI want to be with youI need you near me, my loveStep2 What is Modal Verb?1.定义：情态动词本身有一定的意义，表示说话人的某种感情或语气，对某动作或状态的某种态度，表示“需要”，“可以”，“必须”，“应当”等意义。
必修3第一单元Grammar,课文学案
必修3第⼀单元Grammar,课⽂学案第五课时语法学案--- 情态动词（I）（Modal verbs）学习⽅法learning method：根据所给例句发现情态动词所表⽰的不同语⽓，从⽽在不同的语境下学会使⽤适当的情态动词。
Step I 情态动词概述1.情态动词本⾝具有词义，表⽰主语或说话⼈的语⽓或对事物的态度。
但它不能单独作谓语动词，只能和⾏为动词或系动词连⽤，构成谓语。
2.情态动词都没有⼈称和数的变化。
常见的情态动词有：Step II Discovering useful structuresFind the sentences in the reading passage that use modal verbs. Underline them.Step III summing up总结⼏个主要情态动词的⽤法：学法指导：从下⾯的例句和意思总结出情态动词的不同⽤法切记：⼀定要先认真研读例句和汉语意思1.can 和could 的⽤法(1) 表⽰有“能”，“会”的意思。
She can speak English．The young man can’t carry the big stone．(2) 表⽰允许。
常译为“可以”(could⽐can语⽓更委婉客⽓)。
Can I help you?You can go now．But he can’t go．Could you do me a favour?注意：以上三句中的could不表过去，could和can没有时间上的差别。
(3) 表⽰，意思是“可能”，“也许”，“或许”(主要⽤于或)---- Can she be in the reading-room?---- No，she can’t be in it．---- Where could(can)he be now?----He could go to the cinema．(could⽐can可能性更⼩)※Can和be able to 的区别〔Eg: I haven’t been able to drive a car.We will be able to finish the task soon. 〕2．may和might的⽤法(1)表⽰回答⽤或〕You may go now．He said that I might use the telephone．---- May l watch TV after supper?---- Yes，you may/can．／No，you mustn’t/can’t．(2)表⽰She may come tomorrow．He might be English．(3)may⽤于祈使句中表⽰。
【人教高一英语】必修三 unit 1 教案
必修三unit 1 Festivals around the world 适用学科英语适用年级高一适用区域全国课时时长（分钟）2课时知识点1、本单元重点词汇；2、情态动词的用法。
教学目标1、让学生掌握本单元所出现的词汇的用法。
2、通过本单元的学习，要求学生熟练掌握情态动词may/ might，can/could，will/would，shall/should，must/can的各种语用功能。
教学重点通过上下文来教词汇、语法，并引导学生分析长句、难句和复杂句。
教学难点总结语言材料中有关情态动词用法和功能并加以应用。
教学过程一、课堂导入要求学生以小组形式完成一个表格填充，列出中国的五个节日和这些节日的时间、庆祝的内容以及节日里人们的所作所为。
激发学生的阅读兴趣，为本单元Reading部分的世界节日做好铺垫。
二、复习预习以提问学生方式复习上节课所学习知识。
同时以习题形式预习新课。
三、知识讲解考点/易错点1 重点单词与短语学习mean n.意义，意思v. 意味；想要(回归课本P1)Festivals are meant to celebrate important times of year.[归纳拓展]mean to do 打算做某事be meant to do 被要求做…mean doing 意味着….eg. I never meant him to work for us.Passing the entrance examination means being admitted into college.take place发生(回归课本P1)Discuss when they take place, what they celebrate and what people do at that time. [归纳拓展] take place/happen/occur/break out/come about(1)take place 其“发生”是按意图或计划进行，无偶然性，无被动语态。
高中英语Unit1 情态动词Ⅰ学案含解析新人教版必修3
Unit 1 Festivals around the worldSection Ⅲ Grammar ——情态动词(Ⅰ)[思维导图] 情 态 动 词Ⅰ⎩⎪⎪⎪⎨⎪⎪⎪⎧ 基本特征⎩⎪⎨⎪⎧ 有词义，但不能单独作谓语一般无人称和数的变化否定结构：情态动词＋not 后接动词原形基本用法⎩⎪⎨⎪⎧ can 与 could may 与 might will 与 would shall 与 should must[语法精讲]一、基本特征1．情态动词有一定的词义，不能单独作谓语，需和实义动词或系动词一起作谓语。
She can speak English though she is six.尽管她才6岁但她会说英语。
2．情态动词一般无人称和数的变化，个别情态动词有现在时和过去时两种时态变化。
They must be in the classroom.他们一定在教室里。
3．构成否定句时，not 放在其后面。
The young man can't carry the big stone.这个年轻人搬不动那块大石头。
4．情态动词后接动词原形。
You should do as I told you.你得照我说的去做。
He said I could use the computer.他说我可以用这台电脑。
We should study hard for our motherland and ourselves.为了我们的祖国和我们自己，我们应该努力学习。
二、基本用法1．can 和 could 的用法(1)表示能力。
She can ride a bike though she is only eight.尽管她才8岁但她会骑自行车。
I managed to find the street, but I couldn't find her house.我想办法找到了那条街，但没找到她的房子。
(注：could 用于否定句时可以表示过去特定的能力)(2)表示猜测，主要用于疑问句或否定句。
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”。
人教版高中英语必修三Unit1 情态动词精品学案(精修版)
人教版英语精品资料（精修版）情态动词精品学案一、情态助动词的词法和句法特征：1. 情态动词只能接不带to的不定式：We used to grow beautiful roses.I asked if he would come and repair my television set.2. 情态助动词用于第三人称单数现在时的时候，没有词形变化，即其词尾无-s形式：She dare not say what she thinks.3. 情态动词没有非限定形式，即没有不定式、-ing分词和-ed分词形式：Still, she needn’t have run away.二.、情态助动词的意义和用法1. can和could的用法1). 表示能力或客观可能性，还可以表示请求和允许。
如：Can you finish this work tonight?Man cannot live without air.— Can I go now? — Yes, you can.①could也可表示请求，预期委婉，主要用于疑问句，不可用于肯定句，答语应用can（即could不能用于现在时态的简略答语中）。
如：Could I come to see you tomorrow?Yes, you can. （否定答语可用No, I’m afraid not.）②can表示能力时，还可用be able to代替。
如：I’ll not be able to come this afternoon.2)．表示惊异、怀疑、不相信的态度。
（主要用在否定句、疑问句或感叹句中）Can this be true?How can you be so careless!This cannot be done by him.3)．“can(could) + have + 过去分词”的疑问或否定形式表示对过去发生的行为怀疑或不肯定。
如：He cannot have been to that town.Can he have got the book?2. may和might的用法1)．表示许可。
人教版高中英语必修三全套教案
Module3 Unit 1 Festivals around the worldTeaching aims and demands1.topic: 1>Festivals2> how festivals begin3>how to celebrate festivals2.function: 1>RequestEg: Could you please…?Could I have …? I look forward to doing…2>ThanksEg: It‘s a pleasure. /Don‘t mention it.It‘s very kind of you to…I‘d love to …Thank you very much./Thanks a lot.You are most welcome.3.vocabulary:4.grammar:Jin can speak English well. (ability)Could you please show me the way to …? (request)May we see the awards for the team? (permission)She might give you … (possibility)The whole family will come for dinner. (promise)Often he would dress up like a rich man. (pass habit)We would be there with our friends. (promise)II.Key pointsPeriod 1-2 Warming up and fast reading1.Greetings2.Warming upStep 1 discussing the following questionsa.How was your holiday/spring festival?b.Did you go traveling?c.How much pocket money did you get?Step 2 talking1). Name some festivalsSpring Festival Dragon Boat Festival Lantam Festival Mid-Autumn Festival Army Day May Day Teachers‘ Day New Year National Day Mother‘s Day Children‘s Day Father‘s Da y Christmas Day Halloween carnival Easter Valentine Day Oben2).Ss work in groups of four and list five Chinese festivals and siscuss when theytake place , what they celevrate and one thing that people do at that time. Festivals Time of year/date Celebrate for Things to do Mid-Autumn DaySpring FestivalDragon Boat DayTomb sweeping DayLantern Festival3.Pre-reading1) What‘s your favourite holiday of the year? Why?2) What festivals or celebration do you enjoy in your city or town? Do you likespending festivals with your family or with friends? What part of a festival doyou like best—the music, the things to see, the visits or the food?4. Fast reading and find the answers to the following questions.A.What did ancient festivals celebrate?B.What are festivals of the dead for ?C.Why are autumn festivals happy events ? three things people do at spring festival ?Period 3-4 Intensive reading1.Read the passage paragraph and find the main ideas of each paragraphParagraph 1: All kinds of celebration in ancient time.Paragraph 2: The purpose to honour the dead and three examplesFestivals Time Things people doObenDay of the DeadHalloweenParagraph 3: The reasons Why we honour peopleFestivals Who does it celebrate ?Dragon Boat FestivalsClumbus DayIndian National FestivalParagraph 4: Autumn festivals are happy eventsParagraph 5: How people celebrate in spring festivals2．Language pointsa.They would starve if food was difficult to find…starve （v.）饿死；挨饿eg. Millions of people starved to death during the war.Starve for sth 渴望…Eg. The homeless children starve for love.Starvation (n.) 饿死Eg. Die of starvationStarvation wages 不够维持基本生活的工资b.The most ancient festivals would celebrate the end of the cold weather, plantingin spring and harvest in autumn.Celebrate (vt./vi.) 庆祝，赞颂，赞美，举行（仪式）Eg.We celebrate the new year with a party.Their courage was celebrated in all the newspaper.Celebrated (adj.) = famous 著名的，驰名的c. …because they thought these festivals would bring a year of plenty.days/years/…of plenty :富裕（尤指事物和钱）的日子，年月，生活等。
人教必修三unit语法情态动词学习教案
3. dare & need
eedn’t.
情态动词
实义动词
dare 否，疑，条 dare not do 不用于肯定句
否,疑don’t dare to do don’t dare do
肯：dare to do
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第二页，共35页。
2. ought to 的否定句形式是oughtn’t to , 一般疑问形式是将ought 置于主语 (zhǔyǔ)前.
eg: We ought not to start so late.
3.在反意疑问句中常常省略to,用 oughtn’t 或是shouldn’t.
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第十一页，共35页。
2. --May I pick a flower in the garden? -- ____C____. A. No, you needn’t B. Not, please. C. No, you mustn’t D. No, you won’t
第11页/共35页
第2页/共35页
第三页，共35页。
You ought to have helped him with his English, ________ ?
A. won’t you B. ought not you
C. shouldn’t you D. wouldn’t you
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第四页，共35页。
第9页/共35页
第十页，共35页。
1. Johnny, you _____B_ play with the knife, you
______ hurt yourself.
A. won’t ; can’t
高中英语必修三Unit1精品教案
高中英语必修三Unit1精品教案Unit 1 Festivals around the World 教学目的和要求（Teaching aims and demands）Period 1 Warming up & pre-readingDate: _________________ Name:___________________Teaching targets:Knowledge and ability objectives:1.To learn about festivals in different parts of the world and compare them2.To get more words about festivals and customs3.To talk about festivals and express ideas by using the wordsStrategy objectives:By means of task-based language teaching, students can participate in pair and group work to get more information about festivals around the world and think more about the topic Moral objectives: By comparing and contrasting the cultures in China and other countries, students can understand the cultural differences between countries, show respect for other culture and customs andlove Chinese culture.Important points：To talk about the festivals around the worldDifficult points：To know about the reasons for the celebrationsTeaching aids ：MultimediaTeaching procedure:Task 1 BrainstormingWork in groups and list below Chinese festivals or holidays that you know.Chinese festivals & Holidays:1.Spring Festival2. The Lantern Festival3. Tomb Sweeping Day4.The Dragon Boat Festival5.The Double Seventh Festival6.The Mid-Autumn Festival7.The Double Ninth Festival8.New Year’s Day(元旦)9.International Women’s Day 10.International Labour Day11.Childre n’s Day12.National Day……Task 2 BrainstormingWork in groups and list below Western festivals that you know.Western festivals:1.Valentine’s Day2.Easter(Mar--April)3.April Fool’s Day4.Mother’s Day (in May)5.Father’s Day (June)6.Halloween (Oct.31)7.Thanksgiving Day (November)8.Christmas9. 10. ……Task 3: DiscussionFestivals are meant to celebrate important times of year. Then work in groups to discuss about when they take place, what they celebrate and what people do at that time.Task 4: Reading《三维设计》P2。
必修3unit1情态动词导学案
Unit1 Festivals round the World (Grammar)主编：李树辉审核：张静静编号：07姓名：班级：学习目标：训练学生的思维，学生能够根据上面阅读文章的内容写一个与文章结尾不同的结局，学生通过思考写出自己的思想、自己的做法，尝试自己解决问题。
重点： The meaning and correct use of each pair of modal verbs: can and could, may and might, will and would, shall and should, must and can’t难点：How to use proper modal verbs according to the concrete and authentic situation. 语法聚焦情态动词 ( modal verbs)：表说话人的某种感情或语气，对某一动作或状态的某种态度。
表示“需要、可以、必须、应当”等。
一、can 与could1.表能力1) Some of us can use the computer now, but we couldn’t last year.2) The new-built theatre can seat 1500 people.2. 表示推测，意为“可能”“或许”，用于疑问句或否定句3) Can she be in the computer center?4) I though what he said could not be true.3. 表示“请求”“允许”(表请求时，口语中常用could 代替 can 使语气更委婉，回答时用can)5) Can/Could I use your dictionary?6) Could you lend me a hand?4. 表示“许可”，可与may 换用。
You can go home now.5. can 用于疑问句或否定句中时，表惊异、不相信等，意思是“可能、能够”。
人教版高中英语必修三Unit1Modelverbs学案学案
人教版高中英语必修三Unit1Modelverbs学案学案人教版高中英语必修三Unit1 Model verbs学案Step 1. Lead inWatch a video and fill in the blanks.1. ______ it be the shadows' call will fly away. 我祈祷，阴暗之影烟消云散( )2. _______ it be your journey on to light the day. 我祈祷，你的旅程照亮白昼3. We ______ as well (还是------的好) be strangers in another town.4. My make up _______ be fading but my smile still stays on. 残妆已褪，微笑依然( )5. I just _______ get you out of my head. ( )6. I know I ________ be what we want to be. ( )7. You ________ sigh and you ________ cry. ( )8. The show_________ go on. ( ) 9. ________ I stay or_________ I go? ( )What are the model verbs here used for? (You may refer to your textbook in P5.) Step 2. Learn some important model verbs. What are the model verbs used for in the following sentences? Write your answers in the blanks. 1. may and might1. What award did you get for the sports competition. May I have a look? ( )2. Our football team didn't play very well today, but we mightdo better tomorrow. ( )3. Nobody knows where the Ambor Room have gone. They_________ have been stolen.归纳：may / might 可以表示 __________ _________ ___________.may/might表示推测时, 常用于_________, 表示可能性较 _______。
高一英语人教版必修三第一单元语法学案设计：情态动词
Book3 Unit1 Festivals around the world语法：情态动词一、归纳总结can/could 的用法。
1.I can swim. / He can speak English very well.归纳总结: .2.Can I come in? / You can watch TV.归纳总结：___ _.3.He couldn’t have left, for his bike is still here.归纳总结：___ .4.My sister has one shortcoming. She can be stubborn.归纳总结：___ .5.（了解）How could you do such a silly thing? （could 为过去式）归纳总结：用于疑问句、否定句和感叹句中表示惊讶、怀疑等感情色彩。
6.can/could 的固定短语:can’t but do___ can’t be too..._ _can’t help doing___ _ can’t be...enough___as...as one can/possible___ _can’t wait to do..___ _①*每当我看到这张照片，我就禁不住想起您为我们做的事情。
__②*我们有必要尽可能的经常锻炼身体。
__③*你最好尽可能的多与老师交流。
__④*他如此伟大，我们怎么表扬也不过分。
__⑤*当我听到他的故事时，我不得不钦佩他的胆量。
__⑥*我迫不及待的邀请你担任这次英语演讲比赛的评委。
__ __7.be able to 与can① *I’m sorry to tell you that I won’t be able to attend the lecture tomorrow.② *In this way ,you may be able to pay attention to what the teacher says.③ I could climb trees when I was younger.He was able to go to the party yesterday in spite of the heavy rain.归纳总结：be able to 与can: ___①“In the 1960s we were all a little wild and couldn’t get away from home far enough or fast enough to prove we could do it on our own,” says Christine Crosby. (翻译)____ (persuade) into buying ② While shopping, people sometimes can't helpsomething they don't really need.③She can't help ____ _ (clean)the house because she's busy making a cake.二、归纳总结may/might 的用法No, you mustn’t1.You may take this seat if you like. May I …?Yes, please. / Sure, go ahead.归纳总结：___ .2.Your math teacher may be in his office.—What has happened to George? —I don't know. He may have got lost.归纳总结：___ .3.May you succeed!归纳总结：__ _.4.What you say may/might well be true.It’s not far, so we might/may as well go on foot.归纳总结: may 短语___ __.三、归纳总结must 的用法。
新课标人教版高中英语必修三 Unit1 精品学案(教师版)
必修三Unit 1 Festivals around the world 单元要点一、根据句子的意思翻译或按要求填词。
1. take place / happen / occur / come about / break outtake place表示“发生、举行、举办”，一般指非偶然性事件“发生”，有某种原因或事先安排。
happen作“发生、碰巧”解，一般用于偶然或突发性事件。
occur作“发生、想到、突然想起”解，其意义相当于happen。
come about表示“发生、产生”，多指事情已经发生了，但还不知道为什么，常用于疑、否break out意思为“发生、爆发”，常指战争、灾难、疾病、火灾或者争吵等事件的发生1). Great changes have __taken place__ (发生) in our hometown during the past ten years.2). It occurred to me that (我突然想起) I saw him on my way home yesterday.3). I happened to see (碰巧看见) your sister crying on my way to school yesterday. I was in such ahurry that I had no time to ask what had happened to (介词) her?4). When the Second World War broke out (爆发), Tom was only a newborn infant.5). I’ ll never understand how it came about (发生) that you were late three times a week.2. celebrate / congratulatecelebrate“庆祝”，后面跟某个节日或物。
高中英语人教版必修三Unit 1 Grammar Modal verbs导学案 Word版缺答案
必修三Unit 1 Grammar Modal verbs I（情态动词）情态动词的语法特征1. 情态动词有一定的意义.2. 没有人称和数的变化，即情态动词第三人称单数不加-s。
3. 不能独立使用，它和后面的动词构成谓语。
4. 情态动词除ought 和have 外，后面只能接不带to 的不定式。
5. 情态动词没有非谓语形式，即没有不定式，分词，等形式。
can/could1.can /could “C an’” 表示能力，意为“能会”表示推测，意为“可能”，常用于否定句和疑问句中表示请求，允许，意为“可以”“could”can 的过去式，意为“能、会”，表示过去的能力在疑问句中表示委婉请求can 的用法（1）表示能力、许可、可能性。
表示能力时一般译为“能、会”，即有种能力，尤其是生来具备的能力，此时may 和must 均不可代替它。
如：She can swim fast, but I can’t . 她能游得很快，但我不能。
I can see with my eyes. 我用眼睛看。
（2）表示可能、能够。
如：I can finish it in an hour. 我能在一小时后完成它。
（3）表示许可，常在口语中。
如：You can use my dictionary. 你可以用我的字典。
（4）表示推测，意为“可能”，常用于否定句和疑问句中，此时can’t 译为“不可能”。
如：Can the news be true? 这个消息会是真的吗？It’s so late. Ca n Tom be reading? 这么晚了，汤姆还在看书吗？It can’t be Mary. She has fallen ill.这个人不可能是玛丽，她生病了。
----Can it be our teacher?那个人有可能是我们老师吗？----No, it can’t be our teacher. He is on a visit to the Great Wall.不可能。
英语人教版必修3学案：Unit 1 Section Ⅲ Grammar—情态动词(Ⅰ)
Section_ⅢGrammar—情态动词(Ⅰ)语法图解探究发现①Festivals can also be held to honour famous people.②Some festivals are held to honour the dead or to satisfy the ancestors, who might return either to help or to do harm.③Most ancient festival would celebrate the end of cold weather, planting in spring and harvest in autumn.④For the Japanese festival Obon, people should go to clean graves and light incense in memory of their ancestors.[我的发现]以上四个句子都使用了情态动词。
其中，第①句中的can表示许可，意为“可以”；第②句中的might表示推测，意为“可能会”；第③句中的would表示过去习惯性动作，意为“过去常会”；第④句中的should表示劝告或建议，意为“应该”。
一、基本特征1．情态动词有一定的词义，不能单独作谓语，需和实义动词或系动词一起作谓语。
She can speak English though she is six.尽管她才6岁，但她会说英语。
2．情态动词一般无人称和数的变化，个别情态动词有现在时和过去时两种时态变化。
They must be in the classroom.他们一定在教室里。
3．构成否定句时，not放在其后面。
The young man can't carry the big stone.这个年轻人搬不动那块大石头。
4．情态动词后接动词原形。
You will do as I told you.你得照我说的去做。
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最新教学资料·人教版英语情态动词精品学案一、情态助动词的词法和句法特征：1. 情态动词只能接不带to的不定式：We used to grow beautiful roses.I asked if he would come and repair my television set.2. 情态助动词用于第三人称单数现在时的时候，没有词形变化，即其词尾无-s形式：She dare not say what she thinks.3. 情态动词没有非限定形式，即没有不定式、-ing分词和-ed分词形式：Still, she needn’t have run away.二.、情态助动词的意义和用法1. can和could的用法1). 表示能力或客观可能性，还可以表示请求和允许。
如：Can you finish this work tonight?Man cannot live without air.— Can I go now? — Yes, you can.①could也可表示请求，预期委婉，主要用于疑问句，不可用于肯定句，答语应用can（即could不能用于现在时态的简略答语中）。
如：Could I come to see you tomorrow?Yes, you can. （否定答语可用No, I’m afraid not.）②can表示能力时，还可用be able to代替。
如：I’ll not be able to come this afternoon.2)．表示惊异、怀疑、不相信的态度。
（主要用在否定句、疑问句或感叹句中）Can this be true?How can you be so careless!This cannot be done by him.3)．“can(could) + have + 过去分词”的疑问或否定形式表示对过去发生的行为怀疑或不肯定。
如：He cannot have been to that town.Can he have got the book?2. may和might的用法1)．表示许可。
表示请求、允许时，might比many的语气更委婉一些，否定回答时要用mustn’t 表示“不可以”、“禁止”、“阻止”之意。
如：You may drive the car.— Might I use your pen? —No, you mustn’t.用May I ... 征询对方许可在文体上比较正式，在口气上比较客气。
在日常口语中，用Can I ... 征询对方意见在现代口语中更为常见。
2)．用于祈使句中表示祝愿。
如：May you succeed!3)．表示推测、可能（疑问句不能用于此意）。
He may be very busy now.4)．“may(might) + have + 过去分词”表示对过去发生的行为的推测。
如：He may not have finished the work.3. must和have to的用法1)．表示必须、必要。
如：You must come in time.回答must引出的问句时，如果是否定的回答，不能用mustn’t，而要用needn’t或don’t have to。
— Must we hand in our exercise books today?—Yes, you must. (No, you don’t have to.)2)．“must be + 表语”的结构表示推测，它的否定或疑问式用can代替must。
This must be your pen.3)．“must + have + 过去分词”的结构常用在肯定句中，表示对过去发生的行为的推测。
它的否定或疑问式用can代替must。
He must have been to Shanghai.4)． have to的含义与must相似，两者往往可以互换使用，但have to有各种形式，随have的变化而定。
must与have to有下列几点不同：① must表示的是说话人的主观看法，而have to则往往强调客观需要。
如：The play is not interesting. I really must go now.I had to work when I was your age.② must一般只表现在，have则有更多的时态形式。
③二者的否定意义不大相同。
如：You mustn’t go. 你可不要去。
You don’t have to go. 你不必去。
④询问对方的意愿时应用must。
如：Must I clean all the room?4. dare和need的用法1)． need表示“需要”或“必须”，作情态动词时，仅用于否定句或疑问句中，在肯定句中一般用must, have to, ought to,或should代替。
如：You needn’t come so early.— Need I finish the work today?— Yes, you must.needn’t + 不定式的完成式“表示本来不必做某事而实际上做了某事”。
如：You needn’t have waited for me.2)． Dare作情态动词时，主要用于疑问句、否定句和条件从句中，一般不用在肯定句中。
如：How dare you say I’m unfair.He daren’t speak English before such a crowd, dare he?3)． 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。
如：I dare to swim across this river.He does not dare (to) answer.Don’t you dare (to) touch it!I wondered he dare (to) say that.He needs to finish it this evening.5. shall和should的用法1)． Shall用于第一人称，表示征求对方的意愿。
如：What shall we do this evening?2)． Shall用于第一、第三人称疑问句中，表示说话人征求对方的意见或向对方请示。
如：Shall we begin our lesson?When shall he be able to leave the hospital?3)． Shall用于第二、第三人称，表示说话人给对方命令、警告、允诺或威胁。
如：You shall fail if you don’t work harder. （警告）He shall have the book when I finish reading. （允诺）He shall be punished. （威胁）4)． Should表示劝告、建议、命令，其同义词是ought to；在疑问句中，通常用should代替ought to。
如：You should go to class right away.Should I open the window?Should的含义较多，用法较活，现介绍三种其特殊用法。
请看下面的句子：① I should think it would be better to try it again. 我倒是认为最好再试一试。
② You are mistaken, I should say. 依我看，你是搞错了。
③ I should advise you not to do that. 我倒是劝你别这样做。
④ This is something I should have liked to ask you. 这是我本来想问你的。
从以上例句可以看出：情态动词should用于第一人称时可以表示说话人的一种谦逊、客气、委婉的语气。
Should还可以用在if引导的条件从句，表示一件事听起来可能性很小，但也不是完全没有可能。
相当于“万一”的意思。
从句谓语由should加动词原形构成，主句谓语却不一定用虚拟语气。
如：⑤ Ask her to ring me up if you should see her. 你万一见到她，请让她给我打个电话。
⑥ If you should change your mind, please let us know. 万一你改变主意，请通知我们。
⑦ Should I (If I should) be free tomorrow I will come. 万一我明天有时间，我就来。
此外，Why(or How) + should结构表示说话人对某事不能理解，感到意外、惊异等意思。
意为“竟会”。
如：⑧ Why should you be so late today? 你几天怎么来得这么晚？⑨— Where is Betty living? —贝蒂住在哪里？— How should I know? —我怎么会知道呢？⑩I don’t know why you should think that I did it. 我真不知道你凭什么认为这件事是我干的。
5)．“should + have + 过去分词”结构一般表示义务，表示应该做到而实际上没有做到，并包含一种埋怨、责备的口气。
如：She should have finished it.I should have helped her, but I never could.You should have started earlier.6. will和would的用法1)．表示请求、建议等，would比will委婉客气。
如：Would you pass me the book?2)．表示意志、愿望和决心。
如：I will never do that again.They asked if we would do that again.3)．用“will be”和“will(would) + have + 过去分词”的结构表示推测，主要用于第二、三人称。
前者表示对目前情况的推测，后者表示对已经完成的动作或事态的推测。
如：This will be the book you want.He will have arrived by now.The guests would have arrived by that time.I thought you would have finished this by now.4)． Would可表示过去反复发生的动作或某中倾向。