必修三 2.7《Unit2 Learning about language & Grammar》课件（新课标人教版－必修3）.ppt
新课标人教版课件系列,高中英语 必修3-2.7,unit 2 healthy eating,Learning about language,Learning about Language (P.12),1 _something that you say is not true 2 _not to be punished for something 3_ uncooked 4_ the strong wish to know about sth. 5_ someone who buys things or services from a shop, company, etc 6_a particular quality that gives someone or something an advantage,lie,get away with,raw,curiosity,customer,benefit,2. Fill in the blanks with words from the left box and paraphrase the italicized parts using the phrases from the right box.,Julie wanted to become thinner. She knew she_ eat more vegetables and fruit but little meat. However, as she was so afraid of being laughed at by her friends, she did not consult a doctor but lived on a_ of rice, _ vegetables, bananas and lemons. Three weeks later, she found she weighed as much as ever. She felt so sad and hopeless about herself and her behaviour changed. She didnt dare to face her boyfriend and she was unwilling to visit her friends any more. Luckily, her best friend Fred came to see her and encouraged her to exercise, eat a_ diet and enjoy life again. Soon Julie became amazingly_ and_! She felt very happy.,ought to,diet,raw,balanced,energetic,slim,become thinner- lose weight being laughed at by her friend -losing face felt so sad and hopeless about herself -lost heart was unwilling to visit any more - lost interest in visiting,Answer key to Exercise 3:,1 pear; ×cream (fat and all the others are fruit) 2 sugar; ×mutton (meat and all the others are energy-giving food) 3 bacon; ×cabbage (vegetable and all the others are meat) 4 strawberry; ×eggplant (vegetable and all the others are fruit),情态动词,modal verb (2),ought to,ought to 用于表示“想必会“(语气较must 弱)： 他们想必已到那儿了。 They ought to be there by now. 2. 他最好不要抽烟了。 He ought to stop smoking. 多数情况下，ought to可与should互换使用。 Ought to的反意疑问句用shouldnt替代。,13. You ought to have helped him with his English, _ you ? A. wont you B. ought not you C. shouldnt you D. wouldnt you,比较had better, should & ought to,三者均表示建议，意为“应该”，“应当”或“最好做”. 三者的语气程度为渐强。 Had better指一般性的建议，最弱。 Should&ought to含义相近，常可互换。区别在于，ought to常指特殊情况下的“应当”。Should则指一般情况。见下页例句。,You ought to help him because he is in trouble now.(语气强，有命令意味。) You should have a rest after finishing your sports.（一般性建议） You ought to call the police when you find something wrong in your house. He should take care of the babies tonight.,have to,have to 表示客观需要去做的事情，意为“必须，不得不。” I have to get the station early to catch the first train. We missed the bus so we had to walk home. We have to overcome all kinds of difficulties.,Have to 有多种时态。常见的有：一般将来时， We will have to gather at the school gate at 7 tomorrow. 一般现在时 I have to take more money with me because my gf has so much to buy. 一般过去时 Finally, we had to give up our idea to hold a picnic outside as it rained for a whole afternoon.,have to （考点）,shall用于第一，三人称疑问句， 征求意见或请求 shall 第二，三人称 陈述句,命令,警告,允诺,威胁 should 表劝告，建议，命令，顺理成章的 ought to 疑问句中常用should代替ought to ought to 表应该，语气should 美语中，ought to用于否，疑句时to 可省,shall , should &ought to,Need I do ? Yes, you must. No, you neednt.,dare & need,Must they do? Yes, they must. No, they neednt/dont have to.,must & have to,must表主观意志，而have to表由于客观因素不得不做完成的事情。 Must没有过去式，除在间接引语中可表示过去的时间。在直接引语中表示过去的时间用had to代替。 I told her that she must give up smoking. She said, “We had to get everything ready that night.”,比较must & have to,注意对need问句的回答: -Need I finish the work today? -Yes, _. No, _. No, _.,you must,you neednt,you dont have to,neednt 对其它情态动词的回答: -Shall I tell John about it? -No, you _. -Must we do it now? -No, you _.,neednt (dont have to),neednt (dont have to),Could I borrow your dictionary?(委婉) - Yes，you can/may. Sure. Go ahead. Please yourself. May I take this seat?(第一人称疑问句) Yes, you may. No, you mustnt.,高考链接 1.-Is John coming by train? -He should, but he _ not. He likes driving his car. (2002高考题） A. must B. can C. need D. may 2.It has been announced that candidates(候选人) _ remain in their seats until all the papers have been collected. (2002上海高考题） A. can B.will C. may D. shall 3.-I heard they went skiing in the mountains last winter. (2002北京高考题） -It _ true because there was little snow there. A. may not be B. wont be C. couldnt be D. mustnt be,Practice 1: 高考考题专练 1. I thought you _like something to read, so I have brought you some books. A. may B. might C. would D. must 2. Where is my pen? I _it. A. might lose B. would have lost C. should have lost D. must have lost 3. I didnt hear the phone. I _asleep A. must be B. must have been C. should be D. should have been,B,D,B,4. -There were already five people in the car, but they managed to take me as well. -It _a comfortable journey A. cant be B. shouldnt be C. mustnt have been D. couldnt have been 5. Its nearly seven oclock . Jack _be here at any moment. A. must B. need C. should D. could,D,C,情态动词考题:,1. -Did the train arrive in time? -No. It _ two hours ago. A. must have arrived B. ought to have arrived C. must arrive D. ought to arrive 2. “Must I drive to his house and pick up the children?“ “No, .“ A. you shouldn't B. you might not C. you needn't D. you mustn't,B,C,3. We didn't see Tom at the meeting yesterday. He it. A. mustn't have attended B. cannot have attended C. needn't have attended D. would have not attended,B,4. You _ such a long composition. The teacher only asked for 300 words. You have written 600. A. mustnt have written B. couldnt have written C. neednt have written D. do not have to write,C,5. There is someone knocking at the door. it be Tom? A. can B. must C. should D. ought to 6. Two years ago, my husband bought me a bicycle. If you live in town, it is often faster than a car and you worry about parking. A. must not B. may not C. should not D. don't have to0,A,D,Discovering useful structures (P.13),Answer key for Ex.1: 1.Then usually by lunchtime they would all be sold. (Possibility) 2.What could have happened ? (Possibility) 3.Nothing could be better (Possibility) 4.Something terrible must have happened if (Guessing),5. He could not believe his eye. (Ability) 6. Perhaps he should go to the library and find out. (Duty) 7. He could not have Yong Hui getting away with telling people lies ! (Intention) 8. He had better do some research ! (Duty) 9. Even though her customers might get thin after eating Yong Huis food (Possibility) 10.They would become tired very back. (Ability),. ought/oughtnt to should/shouldnt mustnt neednt (dont) have to will can/cant,2. Choose suitable modal verbs below to complete the following dialogues. There may be more than one possibility,1 SAM: How can I grow thinner, Mum? MUM: Well, you _ eat food with plenty of fibre that helps you digest better. And you_ stop drinking cola or eating sweet food. SAM: Does it mean I_ eat. my favourite fried chicken any more? MUM: Not exactly, if you love fried chicken, you _ give it up. Just eat it less often. You_ worry too much: a little fried chicken_ do you good!,have to,should,shouldnt,neednt,dont have to,will,2 DOCTOR: You are sick because youve eaten poisonous mushrooms. Where did you get them? LUCY: I picked them in the forest. I know we_ eat fresh vegetables. DOCTOR: Oh, you_ eat them until youre sure they are not poisonous. LUCY: Thank you, doctor. Ill be more careful next time. 3 CHARLES: I wish I could see things clearly in the dark. TOM: Eating carrots_ help you see better. You_ eat some every day.,have to,mustnt,ought to,should,Using Structures (P.50),Answer key for Ex.1 1. have to, should, need to 2. ought to, should 3. mustnt, would 4. have to, need to 5. cant, cant,Assignment,1. Summarize the rules of the modal verbs in your own way. 2. Finish the exercises of “Using words and Expressions P.49,goodbye,
