人教新课标高一必修三英语课件：Unit 1 Festivals around the world Period 4.ppt

1、 Modal Verbs (1) can, will, may, must-modal verbs Ability: 1 He can speak English now. 2 He couldnt speak English a year ago. 3 Im not able to come to the game on Friday. Permission: All passengers may now board. We can board now. Obligation: You must fasten your seat belts. (strong) You should pay

2、attention. (weak) You ought to pay attention. Possibility: 1 It may rain. 2 How could I forget an important thing like that? 3 He cant /couldnt have known the result. P 5 Ex 2 ability; advice; agreement; guessing; past habit; necessity; permission; possibility prediction; promise; request Quite unsu

3、re-quite sure 1. He might be in the classroom. 2. He may be in the classroom. 3. He could be in the classroom. 4. He should be in the classroom. 5. He must be in the classroom. Use of modal verbs in the text 1. Most ancient festivals would celebrate the end of cold weather, planting in spring and ha

4、rvest in autumn 2. Some festivals are held to honor the dead or to satisfy the ancestors, who might return either to help or do harm. 3. They also light lamps and play music because they think that this will lead the ancestors back to earth 4. These carnivals might include parades, dancing in the st

5、reets day and night, loud music and colorful clothing of all kinds. 5. For the Japanese festival Obon, people should go to clean graves 6. It is now a childrens festival, when they can dress up and go 7. Festivals can also be held to honour famous people 8. Harvest an Thanksgiving festivals can be v

6、ery happy events. 9. In European countries, people will usually decorate and will get together 10. At the Spring Festival in China, peoplemay give children lucky money in red paper. 11. It was Valentines Day and Hu Jin had said she would meet him at the coffee shop after work. 12. She said she would

7、 be there at seven oclock and he thought she would keep her word When you are very sure of something, you use must in positive sentences and cannot or cant in negative sentences. e.g. You must be Jeanne. Im Mathilde Loisel. We used to know each other very well. It cant be true! I dont believe it. Wh

8、en you are quite sure about something, you use can. e.g. Attending a ball can be exciting. When you think that something is possible, but you are not very sure, you use could, may or might. e.g.You could borrow some jewellery from your friend Jeanne, who is married to a rich man. You may not know th

9、at the necklace I returned is not the one that I had borrowed. Dont you have a friend who might lend you some jewellery? 表示推测表示推测情态动词的重要用法情态动词的重要用法. 1. You must be Mr Smith-I was told to expect you here. 2. He must have known what we wanted. 3. We may have read the same report. 4. He cant have slept

10、 through all that noise. 5. Theres someone outside-who can it be? 6. What can they be doing? 7. These pills might help to cure your disease. 8. You could be right, I suppose. Must , can/could, may/might 的用法的用法 must 1.Must 表示推测时，表示推测时， 只能用于只能用于肯定句。肯定句。 这个电脑肯定出了问题。这个电脑肯定出了问题。 There must be something w

11、rong with the computer. 你努力学了一整天，你努力学了一整天， 一定累了吧一定累了吧 You have worked hard all day. You must be tired. 2.Must +be doing/do 表示对表示对现在的动作现在的动作进行肯定推测进行肯定推测 他现在一定在看小说他现在一定在看小说 He must be reading novels now. 他们买了一辆新车。他们买了一辆新车。 他们一定很有钱他们一定很有钱 They have bought a new car. They must have a lot of money. 3.Mus

12、t +have done 表示对表示对过去发生的事情过去发生的事情作出的肯定作出的肯定 判断判断 他们在玩篮球，他们在玩篮球， 他们一定完成了作业。他们一定完成了作业。 They are playing basketball, they must have finished their homework. 路是湿的。昨天晚上一定下雨了。路是湿的。昨天晚上一定下雨了。 The road is wet. It must have rained last night. can/could 1. can /could 表示推测时，只能用在表示推测时，只能用在否定句或疑问句否定句或疑问句 中中。 Its

13、 so late. Can Tom be reading? 这么晚了，汤姆还在看书吗？这么晚了，汤姆还在看书吗？ 这个人不可能是玛丽，这个人不可能是玛丽， 她生病了。她生病了。 It cant be Mary. She has fallen ill. 她不可能在说谎。她不可能在说谎。 She couldnt be telling lies. 2. can/could have done 对对过去发生过去发生行为的可能性进行行为的可能性进行 推测推测: 刚才我还看见他了，刚才我还看见他了， 所以他不可能出国的。所以他不可能出国的。 I saw him just now so he couldnt

14、 have gone abroad. 门是锁着的，门是锁着的， 所以她不可能在家。所以她不可能在家。 The door was locked. She couldnt have been at home. 3. can/could have done “本可以，本来可能已经本可以，本来可能已经”用”用 于于肯定句肯定句中，表示对中，表示对过去发生的事情过去发生的事情做出的判断，做出的判断， 你本来可以考的更好。你本来可以考的更好。 You could have had a better mark. may/might 1.May/might表示推测时，只能用于陈述句，表示对现表示推测时，只能用

15、于陈述句，表示对现 在或将来要发生的动作把握不大。在或将来要发生的动作把握不大。 她们明天可能会到这里来。她们明天可能会到这里来。 They may come here tomorrow. 他们可能还在等我们呢。他们可能还在等我们呢。 They may be still waiting for us. 2.might 可用于可用于指过去的行为或者表示可能性更小指过去的行为或者表示可能性更小。 他也许在作功课吧。他也许在作功课吧。 He might be doing his homework now. 我问他我是否可以离开。我问他我是否可以离开。 I asked him if I might l

16、eave. I asked him “May I leave now?” 3.might/may have done,表示对表示对过去发生的动作过去发生的动作进行进行 可能性推测，可能性推测， 他可能去医务室了。他可能去医务室了。 He may have gone to the clinic. 他可能已经从报纸上知道这个消息了。他可能已经从报纸上知道这个消息了。 He might have read about the news in the newspaper. Will /Would you do? 表请求表请求 表意志，愿望，决心表意志，愿望，决心 would表过去反复发生得动作或某种倾

17、向表过去反复发生得动作或某种倾向 “总是“总是,总要”总要” used to表过去常常（现在已没有这种习惯）表过去常常（现在已没有这种习惯） “过去常常”“过去常常” used to 可于状态动词连用可于状态动词连用 would不可以不可以 eg. He used to be a quiet boy. ( ) He would be a quiet boy. ( ) will/would - I would never come to this restaurant again. The food is terrible! - _ . ( 2004全国全国 ) A. Nor am I B. Neither would I C. Same with me D. So do I 答案答案B B。第一个句子使用了。第一个句子使用了would, would, 用用 neitherneither表示附和的意义时，助动词应与上表示附和的意义时，助动词应与上 文一致。文一致。 B Assignment 导引导引