必修三 Book3 Unit2 healthy eating 语法grammar
英语：必修3_Unit2_Healthy_eating-Grammar课件(新人教版)
Without health no pleasure can be tasted by man. 没有健康就没有乐趣。 Good health is over wealth. 健康是最大的财富。
e.g. Young people should learn how to use computers.
Every citizen ought to obey law. You ought not to go.
must
1.must表示“必须 ，应该”。
—Yes, you must. e.g.— Must I finish all assignments at a time?
3.-Must I be home before eight o'clock, mum? -No,you __________. A. must B. mustn't C. need not D. have to
4.-Ought he to see the doctor? -No,he_________. A. ought not to B.ought to C. should D. should not to
must一般只用在肯定句中，来表推测意义的 “一定，必定”
1. The floor is so clear.It must be cleaned.
2. The ground is wet.It must rain just now.
have to
1.表示“必须，不得不”，在这个意义上与 must很接近。 2.否定形式：don't have to 3.have to 与must的比较： eg. (1). You must finish this task today. (2). Every students will have to know how to use computers. must表示的是说话人的主观看法 have to 表示的却是客观需要 have to 比must有更多的形式
必修3 unit 2 Healthy eating Grammar简案
Unit 2 Healthy eatingGrammar：Modal verbs IIImportant points：1.Get students to review and consolidate the use of can, could, may, might, will, would, shall, should, must, can’t.2.Let students learn the use of ought to.Difficult points：Enable students to learn how to use ought to correctly.Knowledge goals：1.Get students to know more about modal verbs.2.Let students learn the use of ought to.Ability goals：Enable students to use modal verbs correctly and properly according to the context.Emotional goals：1.Get students to become interested in grammar learning.2.Develop students’ sense of group cooperation.Teaching procedureI. Warming-upTopic：Health is the biggest wealth.Discussion：What should/shouldn’t we do to keep healthy?What kind of food must we eat to be strong?What ought we to eat to stay slim?II. Lead-inFill in the blanks and talk about functions of modal verbs.(Intention Promise Duty Possibility Guessing)III. LearningTask 1.Read the text and find out the sentences containing modal verbs and explain the meaning of the modal verbs.1. By lunchtime they would all be sold.2. His restaurant ought to be full of people.3. What could have happened?4. Nothing could have been better?5. Something terrible must have happened.6. I will take all that fat off you in two weeks.7. He could not believe his eyes.8. He wondered if he should go to the library to find out.9. He couldn’t have Yong Hui getting away with telling people lies.10. He had better do some research.11. After eating in the restaurant people would become fired very quickly.Task 2. Summarize the usage of should/ought to, must/have to through doing some exercises.the usage of ought to&should：When you are trying to advise someone about what to do or what not to do, you can use should/ought to or should not/ ought not to. Ought to is stronger than should in tone.the usage of have to&must：When you want to say that it is necessary for someone to do something, you can use must. Must can be only used in present tense and future tense. The negative form of must is mustn’t which means 禁止. You can use have to when someone else thinks it is necessary or there seems to be no other choice. Have to can be used in any tense. The negative form of have to is not have to which means needn’t. You can use have got to instead of have to.IV. After learning (Test&Exercises)：Step 1.Choose a proper phrase according to the situations.Step 2.Group work：use modal verbs in your dialogue.Possible questions are：1.Do you know what you have to do when you borrow books from the library?2. Do you know what to to do when you teeth ache?3. Do you know what to do if you need to meet someone you don’t know at the airport?4. Do you know what to do if you want to get a discount in a shop?5. Do you know what you should do when you meet the hostess in your friend’s home?Some hints：1.I have to take the book to the librarian’s desk. Then I need to give her my card so she can register the book on her computer. I have to return the book before the date stamped on the cover.2.I must go to the dental hospital and see the dentist. Of course I have to make an appointment first. Then I should clean my teeth before I go into the dentist’s surgery. It will be more thoughtful for him/her if I can do this.3.First , I ought to arrive in good time at the airport. Second, I must write the name of the person I don’t know on a name board and display it so everyone can see it. Finally, I have to wait until the flight have appeared. If I still have not seen him/her I should go to the information centre and ask them to make an announcement.4.To get a discount in a shop I need to find out the original price. Then it is important to laugh and wonder aloud if this price is a joke or not. Finally I should offer a lower price and argue with the salesperson until they offer me a more reasonable price. If the price I still too high I don’t have to accept it. I can always walk away. Sometimes if the salesperson is keen to make a sale he/she will offer me a more reasonable price.5.When you meet the hostess in your friend’s home, you ought to greet her politely. You should spend a few minutes talking to her. For example you can thank her for inviting you but you don’t need to compliment her on her dress or her house. However , you ought not to speak to her too long as she will be busy and have many people to greet. At the end of the party you must thank her for a lovely evening.V. ConsolidationChoose the best answers.(discover the useful structure：Modal verbs + have done)。
高考英语 Unit2《Healthy eating》知识与要点课件 新人教必修3
【答案】 A
4．strength n．[U]力气，力量；[C]强项，长处；优点 归纳拓展 (1)strong (adj.)强壮的→strength (n.)力量→strengthen (v.) 加强；增强→strengthless (adj.)无力的 (2)相关短语 build up one's strength增强实力/体力 at full strength满员，满额 in (great) strength人多势众地
He kept his balance with his arms on top of the wall. 他在墙上用双臂保持平衡。 I think on balance I prefer the new system. 总的说来，我觉得自己更喜欢新体制。 You should balance the advantages against the disadvantages before your final decision. 在作出决定之前，你一定要权衡利弊。
重点 短语
be/go on a diet，ought to，lose weight，get away with，tell a lie/lies，win...back，in debt，spy on，cut down，before long， earn one's living，put on weight，glare at，benefit from
【链接训练】
①The boy ________ on the ground ________ that he had
seen a cock ________ an egg.
A．laying；lay；lay
B．lying；lie；lie
Book3 unit2 Healthy eating 句型学习
Book3 unit2 Healthy eating--------重点句型学习一、复习重点单词和短语（在横线上写出正确的单词和短语）1．vt. 平衡；n. 天平；平衡→adj. 平衡的2．n．好奇心→adj.好奇的→adv.好奇地3．n．强项；长处；力量→vt.增强；巩固→adj.强壮的4．vt. 限制；限定n.界限；限度→adj.有限的→adj.无限的5．n．利益；好处vt.& vi.有益于有助于→adj.有益的；有利的6. n．缺点，虚弱，弱点→vt. & vi.使变弱→adj.虚弱的7．体重减轻；减肥8．被放过；(做坏事)不受惩罚9．对某人说谎10．赢回；重新获得11．靠…..谋生12. 欠债13．使…..之间保持平衡14．削减；删节15．把A和B结合起来16．增加体重17．怒目而视某人18____________________对……….感到好奇19___________________对....有益20. 应当，应该做某事二、单元重点句型学习：1．Wang Peng sat in his empty restaurant feeling very frustrated.王鹏坐在他那空荡荡的餐馆里，感到十分沮丧。
[句型结构] feeling very frustrated是现在分词短语作伴随状语，表示状语的动作伴随着主句谓语动作发生而同时发生的，属于主动关系。
若属于被动关系则用过去分词。
(非谓语动词)Eg, He stood there, staring at me curiously.The little girl is standing there singing and dancing happily.( When) looking at the photo, I couldn’t miss my old friend.即学即练：1. She sat at the table__________(read) China Daily.2. They went into the classroom,_________________ . (又说又笑)3. ________________(站在顶楼)，you can see the whole school.4. The dog entered the room,______________(follow) his master.5. I came here______________(run) all the way.7. The master entered the room, following by his dog. (改错题)2. “Nothing could be better，” he thought.他想：“再没有比这些更好的了。
Unit2Healthyeating-Grammar教案(新人教版必修3)
Unit 2 Healthy eatingPart 1 Teaching Design第一部分教学设计Period 2 A sample lesson plan for Learning about Language(Modal verbs: ought to / ought not to / have to / don’t have to/ mustn’t / needn’t)IntroductionIn this period students will be first helped by the teacher to warm up by having a dictation. Then they go on to discover useful words and expressions and learn about grammar. Some ready used materials for Modal verbs: ought to / ought not to / have to / don’t have to / mustn’t / needn’t will be offered.ObjectivesTo learn about Modal verbs: ought to / ought not to / have to / don’t have to / mustn’t / needn’t To discover and learn to use some useful words and expressionsTo discover and learn to use some useful structuresProcedures1. Warming up by reading aloud the text COME AND EAT HERE (1)We promote reading aloud to students and by students in order to encourage a love of English books and a desire to become a fluent English speaker. So Read aloud the text before we learn about the grammar.2. Discovering useful words and expressionsIn pairs do the exercises on page 12. You must finish them in 5 minutes.3. Reading and identifyingRead the text COME AND EAT HERE (1), discovering all the sentences which contain any of the modal verbs: ought to / ought not to / have to / don’t have to / mustn’t / needn’t.4. Consolidating by doing exercisesTo consolidate your understanding you will be given 10 minutes to go overexercises on page 13. You may just write in your text book. I mean thestudent’s b ook you are working by.5. Reading the r eady used materials for Modal verbs: ought to / ought not to / have to / don’t have to / mustn’t / needn’t（用原版）For reference: （用原排版）。
高中英语人教版必修3Unit2HealthyeatingGrammar教案（系列一）
高中英语人教版必修3Unit2HealthyeatingGrammar教案（系列一）必修三Unit 2 Healthy eatingPeriod3 GrammarⅠ.Knowledge aims :Teaching goals:1. Get students to know more about modal verbs.2. Let students learn the use of ought to、should、must、have to.Abilities goals:Enable students to use modal verbs correctly and properly according to the context.Emotion goals:1. Get students to become interested in grammar learning.2. Develop students’ sense of group cooperation.Ⅱ.Teaching importance：1.The usage of each pair of the modal verbs.2.The sameness and difference among these pairs of the modal verbs.3.Correctly understand the change the modal verbs bring to the sentence, that is , their functions. Ⅲ.Teac hing difficulties: Enable students to learn how to use ought to correctly.IV. Teaching methods:1 Task-based teaching and learning2 ExplanationV. Teaching Procedures:Step 1 Leading-inT: Look at some proverbs.The first wealth is health .An apple a day keeps the doctor away.Early to bed and early to rise makes a man healthy , wealthy and wise.Without health no pleasure can be tasted by man.Good health is over wealth. Ask the students to discuss the following questions. If you’d like to give advice or opinions, you can use the modal verbs.what should/shouldn’t we do to keep healthy?What ought we to do to keep healthy?What kind of food must we eat to be strong?Step 2 Grammar learning1.What is called the modal verbs?--Modal verbs help other verbs express a meaning or an idea. Words like should, can, have to, must, and a f ew others are called modals.2. What modal verbs have you learned?can/ couldmay/ mightwill/ wouldshall/ shouldmust/ have toought to / need3. Thinking and discussinga. Let students think over and discuss with a partner how each of these modal verbs is being used in the situ ations.Intention Duty Permission Possibility Guessing Abilityb. Use the function words below to explain the meaning of the modal verbs. If students have some difficulty, give them a hand.1).By lunchtime they would all be sold.2). His restaurant ought to be full of people.3). Nothing could have been better?4).I will take all that fat off you in two weeks.5).He could not believe his eyes.6).He wondered if he should go to the library to find out.7).He couldn’t have Yong Hui getting away with tes and fill in the blanks according to the Chinese.You _ought to_______ go and see the doctor.你应当去找医生看看病。
人教版高中英语必修三：Unit2 Healthy eating-语法篇(学生版)
Unit2 Healthy eating语法篇__________________________________________________________________________________ __________________________________________________________________________________要求学生掌握本单元的重点语法----情态动词表示推测的用法。
一、情态动词表推测：1. 大多数情态动词（除表‘能力、许可、意志’外），都可以表示推测，其程度有差异。
按可能性程度的高低排列为：must ﹥will ﹥would ﹥ought to ﹥should完全肯定完全可能很可能﹥can ﹥could﹥may ﹥might可能有可能2. 区分情态动词的否定含义：may not或许不、可能不might not可能不can’t 不可能mustn't不许、禁止shouldn’t不应该needn’t 不必3. 情态动词表推测具体运用：情态动词可以对现在、进行、过去推测。
4. 表示反劝的特殊的表推测形式5. 注意：二、情态动词表推测的反意疑问句1.情态动词表推测的反意疑问句，简单来说，就是以情态动词后的时态为淮，如句子里有明确的时间状语，则以其为准。
2.以must 为例：Eg.1. You must be hungry now，aren’t you?2. He must be watching TV，isn’t he ?3 Tom must have lived her for a long time，hasn’t he ?4. She must have arrived yesterday，didn’t she?注：如选择题中（以She must have arrived yesterday，didn’t she？为例）既有didn’t she又有hasn’t she则以didn’t she？为最佳答案。
人教版本高中英语必修三Unit2Healthyeating语言点
高中英语学习资料madeofjingetieji目知要点:diet,balance,offer,serve,discount,glare,consider,operate,combine,tired,hurry,frustrate,limi t要点短:cutdown,indebt,earnone’sliving要点句型nothingcouldbebetter⋯Whydon'tyoudo...？havesb.doingsth.知解要点【高清堂：要点】balance要点例句：Whatwillhappentoyouifyoudon ’tbalancedeatdiet？balance(n.)[U]均衡lose/keepone ’sbalancebeoffbalancesenseofbalance(2)[U,sing]均衡;均衡Pesticidesseriouslyupsetthebalanceofnature.balance[C]天平，秤Weighitonthebalance.(4)[Cususing]进出差，余Mybankbalanceisn’tgood.2)(v.)(1)(vt./vi.) （使⋯)保持均衡Howlongcanyoubalanceononefoot?Balancingmycupofcoffeeinonehand,Imanagedtoopenthedoor.(2)(vt.) 算tobalanceanaccountupset要点例句：Idon’twanttoupsetyou,butIfoundyourmenusolimitedthatIstoppedworryingandstartedadvertisi ngthebenefitsofmyfood.upset(upset,upset,upsetting)(adj.)不快的，心慌意乱的，烦忧的beupset(withsb.)(by/about/atsth.)Shewasreallyupsetaboutthewayherfathertreatedher.(2)(vt.)(upset,upset)弄翻；使心慌意乱Don’tdoanythingthatwouldupsethim.Heupsetabowlofsoup.benefit要点例句：Idon’twanttoupse tyou,butIfoundyourmenusolimitedthatIstoppedworryingandstartedadvertisi ngthebenefitsofmyfood.benefit(1)(vt.) 有利于sth.benefitsb.Thesefacilitieshavebenefitedthewholetown.(vi.)得益，获得好sb.benefitfromsth.Hehasn'tbenefitedfromtheexperience.(n.)好，益，帮助beofbenefitto=bebeneficialto ⋯Thenewregulationswillbeofgreatbenefit(=behighlybeneficial)tousall.forthebenefitof=forthebenefitofsb.Themoneyistobeusedforthebenefitofthepoor.diet【原句回放】Everybodyhastoeat，butdoyoueatahealthydiet?(P9)每一个人都必吃，但是你吃得健康?【点】dietn. 食，食be/goonadiet在食dietsb. ＝putsb.onadiet限制某人的食dietaryn. 定食(法)dieteticadj. 食的ThedoctorsaysI’vegottogoonadiet．医生我必食。
高一英语人教新课标必修三 Unit2Healthy Eating Grammar
--No, you __________. needn’t
--No, you ____________. don’t have to
(3)dare做情态动词时多用于疑问句，否定句， 条件状语从句以及表示怀疑的名词性从句中， 表示"敢..." e.g. 夜间我不敢在小树林里走。 I____ the woods at night. dare ____ not _____through walk 你敢当面跟他这么说么？ speak __him to ___ ___ ___ Dare you ____ face to ____ face ？
（1）没有人称,数和时态的变化，后接动词 原形可以表示现在、将来或过去将来，由时 间状语或上下文决定
e.g. You ought to take care of yourself.
They ought to come tomorrow.
He thought that they ought to take part in the
（I dare say…为固定习语:我敢说, 我相信, (我想)可能, (我想) 是这样）
shall&should
shall的用法 (1)用于第一、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等。 e.g. Shall we go out for dinner? Shall Lily return to her hometown? (2)用于第二、三人称的陈述句，表示说话人给 对方的命令、警告、允诺或按规定做某事 e.g.You shall have a new bicycle next weekend. Students shall wear uniforms at school.
人教版高中英语必修三Unit2 Healthy eating语法篇同步讲义
Unit2 Healthy eating语法篇__________________________________________________________________________________ __________________________________________________________________________________要求学生掌握本单元的重点语法----情态动词表示推测的用法。
一、情态动词表推测：1. 大多数情态动词（除表‘能力、许可、意志’外），都可以表示推测，其程度有差异。
按可能性程度的高低排列为：must ﹥will ﹥would ﹥ought to ﹥should完全肯定完全可能很可能﹥can ﹥could﹥may ﹥might可能有可能2. 区分情态动词的否定含义：may not或许不、可能不might not可能不can’t 不可能mustn't不许、禁止shouldn’t不应该needn’t 不必3. 情态动词表推测具体运用：情态动词可以对现在、进行、过去推测。
4. 表示反劝的特殊的表推测形式5. 注意：二、情态动词表推测的反意疑问句1.情态动词表推测的反意疑问句，简单来说，就是以情态动词后的时态为淮，如句子里有明确的时间状语，则以其为准。
2.以must 为例：Eg.1. You must be hungry now, aren’t you?2. He must be watching TV , isn’t he ?3 Tom must have lived her for a long time, hasn’t he ?4. She must have arrived yesterday, didn’t she?注：如选择题中（以She must have arrived yesterday, didn’t she？为例）既有didn’t she又有hasn’t she 则以didn’t she？为最佳答案。
人教版高中英语 Book3 unit2 healthy eating单元知识点总结
Book3 unit2 healthy eating一、知识点总结1）diet作名词，表示“日常饮食”。
be/go on diet节食作动词，表示“节食“。
2）区别energy，strength，power和force：energy主要指人的精力，工作或活动的能力，自然界的能等。
power主要指做一件事情所依靠的的能力，功能，人或机器等事物所潜在的或所发挥出来的力量，职权，权力或政权。
force主要指自然界中的力量，暴力，势力，说服力，压力，法律，道德或情感的力量，军事的力量。
strength指一人或一物所含的内在的力量，能用以从事，忍受，或抵抗很多事物。
3）balance作名词，表示“天平，秤；平衡，平稳“。
be/hang in the balance不确定的，尚未决定的;keep one’s balance保持平衡;on balance考虑周全，总的来说;strike a balance找出折中办法，妥协; 作动词，表示“权衡，平衡”；balance A against B权衡利弊。
4）sign 作名词，表示“记号，符号，标志，标记，手势，迹象，指示牌”等。
作动词表示“签名，签署，示意，做手势”。
in sign of作为……的记号；表示……的。
sign for签约应聘或受雇 ;sign for sth签收某物;sign sb on/up使某人签约受雇5）sigh ：sigh over为……叹息；sigh for想念，思念；sigh out/forth sth边叹息边说出……6）slim 作形容词，表示“苗条的，纤细的，小的”。
作动词，表示“变细，减肥”。
slim down 减肥，缩减。
7）lie 作名词，表示“谎言，谎话，假象”是可数名词。
若表示说谎，只能tell lies或者tell a lie。
a white lie无恶意的谎言；throw a lie in sb’s face当面斥责某人说谎8）rid ：rid sb/sth of，使某人或某物摆脱……，get rid of摆脱，除出；be rid of=rid oneself of 除去，摆脱9）debt ：be in debt欠债；be out of debt不欠债；get/run into debt负债；be deep/deeply/heavily in debt负债累累；pay/back/repay one’s debt偿还债务10）区别glare，gaze，stare，glance： glare指怒视，强调敌对或者威胁的态度。
人教版高中英语必修三：Unit2 Healthy eating-语法篇(教师版)
Unit2 Healthy eating语法篇__________________________________________________________________________________ __________________________________________________________________________________要求学生掌握本单元的重点语法----情态动词表示推测的用法。
一、情态动词表推测：1. 大多数情态动词（除表‘能力、许可、意志’外），都可以表示推测，其程度有差异。
按可能性程度的高低排列为：must ﹥will ﹥would ﹥ought to ﹥should完全肯定完全可能很可能﹥can ﹥could﹥may ﹥might可能有可能2. 区分情态动词的否定含义：may not或许不、可能不might not可能不can’t 不可能mustn't不许、禁止shouldn’t不应该needn’t 不必3. 情态动词表推测具体运用：情态动词可以对现在、进行、过去推测。
4. 表示反劝的特殊的表推测形式5. 注意：二、情态动词表推测的反意疑问句1.情态动词表推测的反意疑问句，简单来说，就是以情态动词后的时态为淮，如句子里有明确的时间状语，则以其为准。
2.以must 为例：Eg.1. You must be hungry now，aren’t you?2. He must be watching TV，isn’t he ?3 Tom must have lived her for a long time，hasn’t he ?4. She must have arrived yesterday，didn’t she?注：如选择题中（以She must have arrived yesterday，didn’t she？为例）既有didn’t she又有hasn’t she则以didn’t she？为最佳答案。
人教版高中英语必修三Unit2Healthyeating课文知识点解析
高中英语学习材料madeofjingetiejiUnit 2 Healthy eating 课文知识点解析Reading:Come and Eat Here(Ⅰ)1.Wang Pengwei sat in his empty restaurant feeling very frustrated.王鹏伟坐在他空荡荡的餐馆里，感觉很失落。
feeling现在分词，作伴随状语。
e.g.Standing on the top of the hill，you can have a better view of the city.站在山顶上，你能更好地看到这个城市.Jeff shouted，seizing her arm.杰夫抓住她的胳膊，喊叫着。
Seeing from the top of the hill，we can see the whole city. 从山顶上我们可以看到整个城市.2.He thought of his mutton kebabs and fatty pork cooked in the hottest，finest oil.他想到了他的在热的最好的油里炸出来的烤羊肉和肥肉。
cooked 过去分词短语，作后置定语(被动)。
e.g.I know a girl called Mary.我认识一个叫玛丽的女孩。
English is a language spoken all around the world.英语是全世界都说的一种语言。
3.His fried rice was hot but did not taste of fat.他的热而不腻的米饭。
taste of sth. 有某种味道e.g.It tastes strongly of mint.它有挺重的薄荷味。
taste 能辨别(味道）；尝出，品出。
(不用于进行时，常与can连用）e.g.I can’t taste.I’ve got a cold.我得了感冒，尝不出味来。
人教版高中英语新课标必修三M3 Unit 2 Grammar
M3 Unit 2 Healthy eatingGrammar: Modal Verbs（Ⅱ）Motto: Eat to live,but do not live to eat. 吃饭是为了活着,但活着不是为了吃饭.I.Learning aims:1.Master the usage of Modal V erbs.2.Master the usage of modal verbs+ have done.Ⅲ. ConsolidationLevel A Complete the task with proper words.1.You ______________ go there alone; it’s too dangerous .(mustn’t/needn’t)2.I ________________ here in time but I met an friend of mine.I stopped and talked him for some time.(could have come/must have come)3.—Shall I leave the room so that you two can talk? —No,you__________________. (mustn’t/needn’t)4.He __________________have missed the train; he arrived at the train station two hours early.(can’t/needn’t)5.We’ll be very glad if you_________________ joining us in going camping.(can/may)6.They _________________ stay in the office last night because of the snowstorm.(have to /must )7.We ____________________ have helped him;in that case,he would have been able to finish the work.(should/can)8.From what you said,she __________________ have told you all about it.(can/must)9.Immediate actions ___________be taken ,like stopping cutting down trees,to better the environment.(may/ought to) Level B Complete the sentences.1.You ______________ private phone calls in work time. 在工作时间你不应该打私人电话。
人教课标英语必修3 Unit 2 Healthy eating Grammar 课件
be angry.
Review
复习下列情态动词： ought to / ought not to / have to / don’t have to / mustn’t / needn’t
Ⅰ. 用ought to, ought not to, have to, don’t have to, mustn’t, needn’t填空。 1. You _o_um_g_uh_stt_nn_’o_tt_/t_o go across the road when the traffic light is on red. 2. You __n_e_e_d_n_’_t _/ _ buy a gift, but you can if you wdaonnt’ttoh.ave to 3. As students, we ___o_u_g_h_t_t_o____ put
Intention Duty Permission Possibility Guessing Ability
possibility
possibility guessing
possibility
intention
intention
ability
duty intention
Modal vedurtbys are usedpotsosibeilxitypress the speaker’s meaning of ipnotsesinbtiliitoyn, duty,
Henry ought to be there by now. He left home at six.
【拓展】 ought to have done对已发生的情况表示“责 备或不满”，表示“本应该做某事”。
You ought to have told him not to go alone. ◆ 否定式为oughtn’t to或ought not to。
人教版高一英语必修三unit2《healthyeating》大课文重点短语及句子分析课件(14张ppt)
5. It cost more than a good meal in his own restaurant. cost 表示某物值…花费.. sth cost …. spend 指人花费... sb spend sth on sth/in doing sth take 指某物/人花费或需要多少时间, it takes sb/ sth to do.. pay 付款买.. pay for
• How much does it cost? • She spent a lot of money on books. • She spent a lot of money in buying books. • It takes her 20 minutes to go to school. • = she takes 20 minutes to go to school. • She paid him 10 yuan for the shirt.
He bought the car at a 20% discount. /at a discount of 20%. （2）win … back : 赢回,重新获得
How can I win back their support ?
do 看见事情全经过 see+宾语+ doing 看见事情正在进行
1) When I looked out of the window, I saw Daisy crossing the road . (正在过马路)
2) I saw her cross the road (过了马路) and disappear around the corner.
7. Perhaps with a discount and a new sign he could
金老师教育培训人教版高中英语必修3 专题2.3 Unit 2 Healthy eating Gram
Unit 2 Healthy eatingGrammar：情态动词(2)一、特殊情态动词need和dare的用法1. 用作情态动词，主要用于否定句和疑问句。
☛You needn’t telephone him now. 你不必现在就给他打电话。
☛She dare not go out alone at night. 她晚上不敢独自出门。
2. 用作实义动词，可用于各种时态。
☛You don’t need to do it yourself. 你不必自己做这件事。
☛The table needs painting (=to be painted). 桌子该喷漆了。
☛We should dare to give our own opinion. 我们应该敢于说出自己的意见。
☛He did not dare (to) look up. 他没敢往上看。
☛I dare say he’ll come again. 我敢说他会再来的。
二、难点突破1. 情态动词+ have + done(1)must have +done sth.对过去时间里可能发生的事情的推测，语气较强，表示＂肯定已经……＂。
☛Since the road is wet, it must have rained last night. 因为路是湿的，所以昨晚肯定下雨了。
(2)can’t have done 表示＂不可能已经……＂。
☛He can’t have lost his way. I drew him a map.他不可能迷路了。
我给他画了地图。
(3)could / may / might have done推测过去某事＂也许＂发生了；也可表示虚拟，意为＂本可能，本能够＂。
☛I can’t f ind my keys. I may / might have left them at the school yesterday. 我找不到钥匙了。
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3．(2010·陕西，23)—May I take this book out of the reading
didn去没必要干某事而实际上也 没有干。
①She needn't have come yesterday. 她昨天本不必来。(实际上来了) ②She didn't need to come yesterday. 她昨天不必来。(实际上也没来)
二、难点突破 情态动词＋have done的用法
意思是“也许已经做了某事，可能已经做了某事”，多用在肯 定句中，用might时表示语气更加不肯定。 She might have taken it home. 她可能把它带回家了。 5 ． needn't have done 表示“本不必做某事而实际上做 了”。 He needn't have gone there yesterday. 他昨天其实不必去那儿的。(却去了)
(2) 作为实义动词，同其他实义动词一样，可用于各种句
式，有时态、人称、数的变化，构成否定句和疑问句时要借助 于助动词do。 ①We need to help him. 我们得帮助他。
②We don't need to tell him the truth.
我们不必告诉他真相。
名师点拨 当need作“需要”讲时，其后跟不定式的被动形式相当于 跟 v.-ing 的主动形式 ，在这一点上，与 want 和 require 作“需 要”讲时一样。 v.-ing 的主动形式表被动含义， need 的动作执
一、基础点拨
1．ought to的用法 (1)ought to“应该”。与should相比较ought to语气重，偏重
“责任，义务，道德，法律”等方面。如：
To keep fit, we ought to learn more about our body. 为了保持健康，我们应该多了解我们的身体。 (2)ought to还可表示可能性。如： It ought to be a close game.
B．would express
C．could have expressed D．must have expressed 答案：C 表示过去本可以做到某事，应用could have done 结构。
9．—What sort of house do you want to have？Something big? —Well, it________be big—that's not important.
行者是动词-ing形式的承受者，因此必须是及物动词的 -ing形
式，若为不及物动词其后应跟介词。 The house needs/wants/requires repairing/to be repaired. 这所房子需要修葺。
易混辨析
needn't have done 表示过去本来没必要干某事而实际 上却干了。
你不该责备他。
(4)在附加疑问句中，ought(n't) to中的to要省去。在美语中 常用shouldn't代替oughtn't。 We ought to go now, oughtn't/shouldn't we? 我们现在该走了，是吧？
2．have to的用法 have to“不得不”。有时态、人称和数的变化，其否定形式 和疑问形式需要借助助动词do。如：
His mother is ill. He has to stay at home to look after her.
他妈妈病了，他得待在家里照顾他。 易混辨析 have to must 侧重客观需要；有时态、人称和数的变化 说话人的主观看法
①I have to go now, for my mother is ill.
他们没有必要担心核辐射。 ②You mustn't come here without permission. 未经允许，你不能来这儿。
3．need的用法 (1)need作情态动词时，后跟动词原形，表示“需要，有必 要”，无人称和数的变化，多用于否定句、疑问句或条件句 中。如：
①You needn't go there now. 你现在不必去那儿。
现在我不得不走了，因为我妈妈生病了。
②I must stop smoking. 我一定要戒烟。
名师点拨 have to的否定式为don't have to，表示“没有义务或没有必 要做某事”，意为“不必”，常可以回答must提问的一般疑问 句。而must的否定式mustn't表示“禁止”。
①They don't have to worry about the nuclear radiation.
示某种行为不该发生却发生了。
①They ought to have been more careful. 他们本该更小心些。(却没有) ②You ought not to have told him the bad news. 你本不该告诉他这个坏消息。(却告诉了他)
4．may/might have done表示对过去发生的事情的推测，
那很可能是场势均力敌的比赛。
名师点拨 用 ought to表示推断时，语气较肯定，通常指的是一种合 乎逻辑的可能性 ( 与 should 表推断时相似 ) ，有时可译为“准 是”(但语气比must要弱)。 (3)ought to的否定形式为ought not to或oughtn't to，其一般 疑问句形式是将ought置于主语前。 You oughtn't/ought not to scold him.
2．(2012·江苏，35)—Happy birthday!
—Thank you! It's the best present I ________ for. A．should have wished B．must have wished C．may have wished
D．could have wished
Unit 2
Healthy eating
Unit 2
第二课时 Learning about Language
情态动词(Ⅱ)
观察句子，写明情态动词的用法。 ①By now his restaurant ought to be full of people. 应该 ；此处指____________ 按理应当如何 ，具有一定 (ought to意义：____ 的针对性)
②Need I go there now? 我现在需要去那儿吗？ 名师点拨
由need引导的一般疑问句的肯定回答常用must或have to，
否定回答常用needn't或don't have to。 —Need I hand in my paper now? 我现在需要交上论文吗？ —Yes, you must./No, you needn't (don't have to)． 是的，你必须。/不，你不需要。
答案：B
考查情态动词。句意：既然Suzie不和我们一起
吃饭，那么我们本不必买那么多食物。needn't have done本不必 做……；may not have done 或许没有做……；can't have done不 可能做……；must have done过去肯定做了……。
7．(2010·山东，25)I________have watched that movie—it'll give me horrible dreams. A．shouldn't C．couldn't B．needn't D．mustn't
答案：A
考查情态动词。句意：我不该看那部电影的，
那 会 让 我 做 噩 梦 。 shouldn't“ 不 应 该 ” ； needn't“ 不 必 ” ； couldn't“不可能”；mustn't不与have done连用。
8 ． He did not regret saying what he did but felt that he ________ it differently. A．could express
答案：D
句意：杰克把父亲描述成一个意志坚强的人，
父亲多年前一定是个勇敢的男孩。表示对过去情况的推测，要 用must have done结构，故选D。
5．(2010·辽宁，26)Doctors say that exercise is important for health, but it______be regular exercise. A．can C．must B．will D．may
room? —No，you________.You read it in here. A．mightn't C．needn't B．won't D．mustn't
答案：D
合句意 。
句意“我可以把书带出阅览室吗？”“不，不
可以，你应在这里读”。由句意知，mustn't “禁止，不许”符
4．(2010·安徽，32)Jack described his father, who______a brave boy many years ago, as a strong-willed man. A．would be C．must be B．would have been D．must have been