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1、Unit 2,In England, you usually drink tea with milk.,We must open a gift later.,We must accept a gift with both hands.,We must use red paper for hongbao.,we mustnt do any cleaning on the first day of the Spring Festival.,We d better not have our haircut during the Spring Festival month.,We mustnt bre
2、ak anything.,some differences between China and the US,China,the US,They can open the gift immediately.,They neednt wait.,They neednt accept a gift with both hands, they can use one hand.,some differences between China and England,China,England,greetings,manners at the bus stop,They must say Mr or M
3、rs when they meet someone for the first time. When they meet friends, they can use their first names.,We may shake hands or smile at each other when we meet for the first time.,They must stand in a lineand wait their turn.,They mustnt push their way onto the bus.,We may push our way onto the bus.,用法
4、:,1.表示请求或允许 :,May I go home，please?,注意：在疑问句中不用于第二人称,2. 表示可能性 :,You may be right.,No, you _,may / might,Yes, you may.,注意： might为may的过去式，但也可以代替may， 语气较为婉转客气或更加不肯定。,mustnt / you cant.,情态动词may, might, can, must, need 的用法,用法:,1. 表示能力 :,He can speak a little English.,Can you fly?,3. 表示请求或允许 :,Can I help y
5、ou?,2. 表示猜测 :,That can not be our English teacher, because she has gone to Shanghai .,注意：could也可表示请求，语气委婉，主要用于疑问句， 不可用于肯定句，答语应用can。,Could I come to see you tomorrow?,Yes, you can. （否定答语可用No, Im afraid not.）,can,情态动词may, might, can, must, need 的用法,多用于否定句,用法:,2.表示推测“肯定，一定” :,1.表示必须或命令 :,You must come
6、early tomorrow, Must I finish my homework first?,They must be at home. The light is on., Yes, you must. No, you dont have to/ neednt .,注意：must开头的疑问句，其否定回答通常用 dont have to 或neednt ，而不用mustnt .,3.否定时表示 “禁止” :,You mustnt smoke here.,must,mustnt,情态动词may, might, can, must, need 的用法,注意在表示客观需要时一般用have to (
7、不得不)，而不用must。 Its raining heavily so we have to stay at home and do some reading. 在表示能力时，can可以和be able to互换,后者有人称变化和更多的时态变化。 He was able to mend the machine at 18.,My brother was very ill, so I ( ) call the doctor in the middle of the night. He said that they ( ) work hard.,had to,must,Exercises:,用法
8、:,既可以做情态动词, 也可以做实义动词,2.实意动词 (need to do sth) :,1. 情态动词 (need do sth),Do I need to buy a big house ?,He needs to buy a big house.,Need I buy a big house ?,Yes, you must.No, you neednt / dont have to. (不必要),Yes, you do. /- No, you dont.,need,情态动词may, might, can, must, need 的用法,( )1. Whos singing in th
9、e next room? It _ be her . She has gone to New York. (2011浙江湖州) A. cant B. must C. shouldnt D. can,A,中考链接,( )2. - Dad, the bread is not enough. I am still hungry. _ I have something more? - But theres nothing in the fridge now. (2011四川绵阳) A. Must B. Need C. Will D. Can,D,( )3. I cant stop smoking, d
10、octor. For your health, Im afraid you _. (2011贵州安顺) A. may B. can C. have to D. need,C,( ) 4. _ I swim here?Im sorry. Children _ swim alone here. (2012年广东省) A. Must , cant B. May , must C. Can, mustnt D. Cant can,C,（ ）5. You _ there today. A. neednt going B. neednt to go C dont need to go D. dont ne
11、ed going,C,（ ）6. The book _ be Linglings. Look , heres her name on the book. A. must B. may C. can D. need,A,1. A: Can you drive a car at the age of seventeen in England? B: Yes, we . How about China? A: No, we .2. A: Can you open a gift immediately after you receive it in England? B: .What about Ch
12、ina? A: No, we usually dont.,1 Complete the conversations with can or cant.,can,cant,Yes, we can,3. A: Can you push your way onto a bus in England? B: .How about China? A: No, we either.4. A: Can you drive on the right-hand side of the road in England? B: .What about China? A: Yes, we must.,No, we c
13、ant,cant,No, we cant,3 Underline the correct words.,It is important to know what you must and must not do when you meet people from a different country. You (1) may / must not ask Westerners “How old are you?” because it is not polite. You (2) might / can know someone well, but (3) you must / need n
14、ot ask “How much money do you make?” He (4) may / can never speak to you again!,In public places, you (5) must / can ask people before you take photos of them, and you (6) must not / might not eat or drink in shops or museums. In some countries you (7) cannot / can go into someones house with your shoes on. You (8) need not / must not take them off. But in some other countries you (9) might / must not wear shoes in the house.,
