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1、Unit 8 It must belong to Carla,Section A Grammar Focus-4c,九年级（全）,It could be _. It also might be _.,Can you guess what it is?,three birds,a beautiful face,Can you guess what it is? It could be _. It also might be _.,a white vase,two faces,It could be _. It also might be _.,Can you guess what it is?,
2、a dog,two girls,Could A be bigger than B? In fact, A and B must be _.,Which one is bigger, A or B?,A,B,the same size,No.,Grammar Focus,grammar,Use “must” to show that you think something is probably true. Use “might” or “could” to show that you think something is possibly true. Use “cant ” to show t
3、hat you are almost sure something is not true.,表示推测的情态动词有must, may, could, might, can。 must表示说话人对事物的推测可能性的程度非常大，意为“一定；准是”；表示有把握的否定推测时用cant，意为“不可能”。如： 1. I cant find my keys. I must have left them at home. 2. - Is she Mary? - That cant be her. Shes in hospital., can表示“可能”，常用于否定句、疑问句中。could为can的过去式，表示
4、推测的语气较can弱。如： - Can the man there be our math teacher? - He may be, but I am not sure. may意为“也许”。might为may的过去式，表示说话人对现在或将来不太确定的可能性的推测。如： Li Ming might get here in time, but I am not sure.,1. I didnt hear the phone. I _ asleep. A. must be B. must have been C. should be D. should have been 2. Mary _ b
5、e in Paris. I saw her in town only a few minutes ago. A. mustnt B. shouldnt C. cant D. may not,Choose the best answer.,3. Peter _ come with us tonight, but he isnt very sure yet. A. must B. may C. can D. will 4. I thought you _ like something to read, so I have brought you some books. A. may B. migh
6、t C. could D. must,5. Whos singing in the next room? It _ be her. She has gone to New York. A. cant B. must C. shouldnt D. can 【解析】考查情态动词表推测。表示否定推测时，用cant，意为“一定不”。must表示推测时，意为“一定”，用于肯定句；根据答语“她已经去了纽约”可知是否定推测，故选A。,6. Whose T-shirt is this? It _ be John s. Its _ small for him. A. cant; much too B. cant
7、; too much C. mustnt; much too D. mustnt; too much 【解析】情态动词的用法。根据句意“它不可能是约翰的，对他来说太小了。”故排除C、D，too much为“太多”的意思，much too为“太”。故选A。,7. Where are you going this month? We_ go to Xiamen, but were not sure. A. neednt B. must C. might D. mustnt 【解析】 neednt (不必)表建议； must (一定)表猜测的可能性很大； might (可能，也许)表不是很肯定的猜测
8、。 mustnt(不允许)表命令。句意：-这个月你们将去哪？-我们或许去厦门，但还不确定。,C,8. - Have you decided where to go for your summer vacation? - Not yet. We _ go to Qingdao. Its a good place for vacation. A. may B. need C. must 【解析】句意：- 你已经决定到哪里过暑假了吗？- 还没有呢，我们也许去青岛，那是个度假的好地方。情态动词表示推测时，may表“可能”，must表“一定”，cant表“不可能”。,A,9. Must I water
9、the flowers now, mum? No, you _. You _ do it later. A. mustnt; must B. mustnt; may C. neednt; may D. neednt; must 10. _ I know by what time you want the project to be done? By the day after tomorrow. _ you finish it on time? A. May; Can B. Must; Need C. Could; Must D. Need; Would,C,A,11. Whos singin
10、g in the garden? It _ be Mr. Brown. He always practices singing at this time. A. must B. cant C. need 12. I _ follow you. Would you please repeat it? A. cant B. mustnt C. neednt D. shouldnt,A,A,1. A: Wheres Jean? B: Im not sure. She _ (is / might be / must be) in the laboratory. 2. A: Everyone is go
11、ing to the pool after school. B: Really? It _ (must be / cant be / could be) hot outdoors.,Choose the best way to complete each sentence using the words in the brackets.,4a,might be,must be,3. A: Thats the phone. B: Hmm. I wonder who it _ (must be / could be / should be). 4. A: I wonder if these are
12、 Jims glasses. B: They _ (cant be / might be / could be) his. He doesnt wear glasses. 5. A: I hear water running in the bathroom. B: It _ (could be / must be / cant be) Carla. She was thinking of taking a shower.,could be,cant be,must be,Complete these responses,1. A: Many people are wearing coats.
13、B: The weather must be_ . 2. A: Sally has been coughing a lot. B: She might be_ . A: This restaurant is always crowed. B: The food _ . A: Whenever I try to read this book, I feel sleepy. B: It cant _.,4b,be interesting,cold,ill,must be delicious,Look at this picture of a room. How much can you tell
14、about the person who lives here? Is it a boy or a girl? What are his/her hobbies? Discuss your ideas with a partner.,A: It could be a girls room because its very tidy. B: I guess so. But it might be a boys room because the clothes look like boys clothes.,4c,Exercises,1. Excuse me. Is this the right
15、way to the Summer Palace? Sorry, I am not sure. It _ be. A. might B. will C. must D. can,Choose the correct answer.,2. Isnt that Anns husband over there? No, it _ be him Im sure he doesnt wear glasses. A. cant B. must not C. wont D. may not,3. You _ be tired youve only been working for an hour. A. must not
