Grammar Healthy eating 三者都可用来提建议，其中三者都可用来提建议，其中had better语气最弱，语气最弱，should, ought to 语气最强。他们的否定式分别是：语气最强。他们的否定式分别是：had better not, should not, ought not to。 情态动词情态动词had better, should, ought to 的用法的用法 1. had better 意思是意思是“最好最好”, 表示表示说话人希望对方做什么说话人希望对方做什么,后接动词原形。后接动词原形。had better not则表示说话人希望对方则表示说话人希望对方最好不要做什么。最好不要做什么。 Youd better not say that. 你最好别说那样的话。你最好别说那样的话。 Hadnt we better take an umbrella? 我们最好带一把伞吧？我们最好带一把伞吧？ I had better (I think I should) begin by introducing myself. 我最好（我想我应该）先作一下自我介我最好（我想我应该）先作一下自我介 绍。绍。 2. should 用以表示建议或劝告用以表示建议或劝告 Children should obey their parents. 儿童应该服从他们的父母。儿童应该服从他们的父母。 He should stop smoking. 他应该戒烟。他应该戒烟。 You shouldnt leave a baby alone in the house. 你不应该把小孩子一个人留在家中。你不应该把小孩子一个人留在家中。 They should have called the police.他们本应该叫警察的。他们本应该叫警察的。 He should have known that the police would never allow this sort of thing. 他本应知道这样的事情警察是决不允他本应知道这样的事情警察是决不允 许的。许的。 3. ought to 1) 常用来表示因为有责任、义务，常用来表示因为有责任、义务， 而应该做某事，通常与而应该做某事，通常与should意意 思相近。思相近。 The students ought to obey the school rules 学生们应遵守校规。学生们应遵守校规。 Oughtnt we to give him a chance to try? 我们难道不应该给他一个尝试的我们难道不应该给他一个尝试的 机会吗机会吗? 2) ought to也常用来表示劝告或建也常用来表示劝告或建议，意思是议，意思是“应当应当”，“宜于宜于”。 There ought to be more buses during the rush hours 在上下班乘客拥挤的时刻，公共在上下班乘客拥挤的时刻，公共 汽车应当多一点。汽车应当多一点。 3) ought to还可表示猜测，意思还可表示猜测，意思是是“理应理应”，“总应该总应该”。 If he started at seven, he ought to be here now 要是他七点钟出发，这会儿总应要是他七点钟出发，这会儿总应该到了。该到了。Read the following Read the following sentences: sentences: You had better get some rest. (=Youd better get some rest.) You had better not eat fruit that isnt ripe. (=Youd better not eat fruit that isnt ripe.) You should/ought to be careful with fruit. You should not/ought not to eat too much junk food. (=You shouldnt/oughtnt to eat too much junk food.) 1. You have a bit of fever. You _. 2. You _ if you want to be healthy. 3. If you are sick, you _ _.Exercise 1 on P5had better drink more waterought not to eat junk fooda good restshould have4. Before you eat an apple, you _.5. You dont look well, you _. 6. You have a bad cough, you _. should wash it first or peel ithad better take a good resthad better take some medicine 7. This medicine will make you sleepy, you _ _. 8. There is nothing seriously wrong with your knee, but you _.ought not to drive after youshould be carefultake the medicine 1. First, you ought to talk to your friend about it before the dinner. 2. But if you dont want to ask her, then you had better do what she does at the table. Exercise 2 on P6 3. Of course, you should try all the food you are offered.4. However, you shouldnt be too nervous. After all, youre her guest and she will try her best to make you feel comfortable. Practice1. - Write to me when you get home. - _. A. I must B. I should C. I will D. I canC2. - Will you stay for lunch? - Sorry, _. My brother is coming. A. I mustnt B. I cant C. I neednt D. I wontB3. - Did you scold him for his carelessness? - Yes, but _. A. Id rather not to B. Id rather not have done C. I shouldnt do D. Id better not doB4. You didnt go to the party yesterday, or I _ you.A. would see B. could seeC. might have seen D. might see 5. Look what you have done. You _ have been careful.A. should B. can C. must D. mayCA6. The cat _ hibernate(冬眠冬眠) in winter. A. dont need B. doesnt need to C. needs not to D. needs not C7. Put on more clothes. You _ be feeling cold with only a shirt on. A. can B. could C. would D. must8. The plant is dead. I _ it more water. A. will give B. would have given C. must give D. should have givenBD9. I didnt hear the phone. I _ asleep. A. must be B. must have been C. should be D. should have been10. He was busy or he _ her more help. A. had given D. would give C. could have given D. giveBCMay I take your order?Yes. Id like ，please.What does that come with?It comes with and What would you like to drink?What do you recommend?Anything else?Id like to try ，please. At the restaurant Waitress: Can I help you? Student A: Yes, er, what would you like ? Student B: I have no idea. Student A: Well. would you like something to drink? What about a glass of milk? ExampleStudent B: No, thanks. I think Id like a bottle of orange. What about you?Student A: Id like a cup of coffee . How about something to eat ? Student B: Some cakes , please. Students: Then we would like a cup of coffee , a bottle of orange , and four cakes , please . Waitress: Ok. Please just wait for a moment . 1. Write Exercise 3 on Page 74 in your exercise-books after class. 2. Talking on Page 72. Practise ordering food as the waiter/waitress and customer. Homework同学们来学校和回家的路上要注意安全同学们来学校和回家的路上要注意安全