Unit 8 Section A Grammar Focus-4c 课件 2024-2025学年人教版英语九年级全册

Unit 8 It must belong to Carla. Section A GF~4c 3 Master the new words and expressions; 2 Learn to make inferences by using must, might, could, can’t; Learning aims 1 Learn to judge and learn to be grateful. 2 review strange noises outside our windows next-door neighbor feel uneasy feel sleepy in our neighborhood have no idea= don’t know the noise-maker the trouble-maker create fear 奇怪的声音_ 在我们的窗外_ 隔壁邻居_ 感到不安_ 感到困倦_ 在我们周围_ 不知道_ 噪声制造者_ 麻烦制造者_ 制造恐怖_ Lead in My name is Mary. There is a picture of my family. Do you know whose bedroom it is? It _ Mary’s. It _ Mary’s sister’s. It _ Mary’s parents’. may be must be can’t be Guessing Game This football _ be Lily’s. It _ be Li Ming’s. can’t must 此处can’t 表示推断,意为“不可能”。通常与be连用。(否定推测用can't) I’m Li Ming. I like playing football. Warm up Guessing Game I’m Lily. I like dancing. Lily _ be a dancer when she grows up. could/may/might 此处could/might/may表示推断,意为“可能”,通常与be连用。 Fill in the blanks with modal verbs. Presentation Whose volleyball is this? It must be Carla’s. She loves volleyball. Whose hair band is this? It could be Mei’s hair band. Or it might belong to Linda. They both have long hair. What did you see that night? I’m not sure, but it can’t be a dog. It was bigger. I think it might be a bear or a wolf. Whose volleyball is this? It must be Carla’s. She loves volleyball. Whose hair band is this? It could be Mei’s hair band. Or it might belong to Linda. They both have long hair. What did you see that night? I’m not sure, but it can’t be a dog. It was bigger. I think it might be a bear or a wolf. Read Grammar Focus and underline the modal verbs. 语法重点: 情态动词表推测 表示可能、怀疑、允诺、愿望、义务、必要、猜测等的动词就是情态动词。情态动词可以表示说话人的语气或某种情态,也可以表示推测。 英语中表示推测的情态动词主要有 must, can, could, may, might, can’t等。 must > can > could > may > might >can’t 1. must表示可能性最大的肯定推测,意思是“一定、准是”。含有must的句子(表推测)变为否定句时,要用can’t。 must一般疑问句的否定回答用needn’t或don’t have to,而不用mustn’t。 mustn’t意为“不可以,不能”,表示禁止,不许可 He must know the answers. /He can’t know the answers. 2. can可表示能力/允许/可能性/怀疑猜测,意为“可以,会,能”;can’t意为“不会,不能,不可以,不可能” could为can的过去式;could还可用于现在时态中表示委婉客气,相当于can;could也可表示惊讶怀疑,不相信。 He can’t pick her schoolbag up. They can be reading in the library. 3. may / might may, might表示推测“可能性”时,意思是“可能”,“也许”。might不表示过去时态,语气更委婉,可能性更小。may, might表推测时,可用于否定句,但不用于疑问句。 eg:He may / might not be at home, but I’m not sure. 他可能不在家,不过我也不确定。 Grammar Section A Grammar Focus~4c 12 情态动词表示推测可以分为以下几种情况: (1)情态动词+ do 此结构表示对现在或将来情况的推测和判断。 eg: —Do you know where she is now? —I think she might travel in Beijing. (2)情态动词+ be doing 此结构表示对现在或将来正在进行的情况的推测和判断。 eg:At this moment, my father can’t be working in the office. Grammar Section A Grammar Focus~4c 13 Learn to make inference. 程度 肯 否 疑 must √ 一定;肯定/表示有把握的肯定推测 mustn't √ √ 禁止/表示绝对否定 may/might √ 可能/表示不太有把握的肯定推测 may not/might not √ √ 可能不/表示不太有把握的否定推测 can/could √ 可能/表示推测 can’t/couldn't √ √ 不可能/表示有把握的否定推测 不同形式的情态动词表示不同的含义 情态动词+动词原形 表示对现在事情的推测 情态动词+be+动词-ing 情态动词+have+动词的过去分词 表示对正在发生的事情的推测 表示对过去情况的推测 This book must be Jim’s because his name is on it. My mother might be cooking in the kitchen. The ground is wet. It must have rained last night. 注意: can 表示推测通常不用于肯定句 may 表示推测通常不用于疑问句 must 表示推测通常不用于否定句和疑问句 can不肯,may不问,must 不否问 注 意: (1)情态动词表示推测时,无时态区别,只有语气差别。表示推测的情态动词的语气强弱顺序如下(由强到弱): must > can > could > may > might (2)含有must的句子(must表推测)变为否定句时,要用can’t He must be at home. He can’t be at home. 注意:can 表示推测通常不用于肯定句may 表示推测通常不用于疑问句 must 表示推测通常不用于否定句和疑问句 can不肯,may不问,must 不否问 Choose the best way to complete each sentence using the words in brackets. 1. A: Where’s Jean? B: I’m not sure. She _ (is / might be/must be) in the laboratory. 2. A: Everyone is going to the pool after school. B: Really? It _ (must be / can’t be /could be) hot outdoors. might be must be n. 实验室 4a 3. A: That’s the phone. B: Hmm. I wonder who it _ (must be / could be / should be). 4. A: I wonder if these are Jim’s glasses. B: They _ (can’t be / might be / could be) his. He doesn’t wear glasses. 5. A: I hear water running in the bathroom. B: It _ (could be / must be / can’t be) Carla. She was thinking of taking a shower. could be can’t be could be adv. 在户外;在野外 Complete these responses. 1. A: Many people are wearing coats. B: The weather must be _. 2. A: Sally has been coughing a lot. B: She might be _. 3. A: This restaurant is always very crowded. B: The food _. 4. A: Whenever I try to read this book, I feel sleepy. B: It can’t _. getting colder/ cold outside having a sore throat/ ill must be delicious be interesting/ exciting n. 外套 adj. 困倦的;瞌睡的 Grammar 4b Section A Grammar Focus~4c 19 4b Complete these responses. 1. A: Many people are wearing coats. B: The weather must be _. 2. A: Sally has been coughing a lot. B: She might be _. 3. A: This restaurant is always very crowded. B: The food _. 4. A: Whenever I try to read this book, I feel sleepy. B: It can’t _. getting colder/ cold outside having a sore throat/ ill must be delicious be interesting/ exciting n. 外套 adj. 困倦的;瞌睡的 【妙辨异同】 sleepy asleep 形容词,意为“困倦的;瞌睡的”。既可作定语,也可作表语。 形容词,意为“睡着的”,只能作表语,不能作定语。fall asleep 意为“入睡”。 A: It could be a girl’s room because it’s very tidy. B: I guess so. But it might be a boy’s room because the clothes look like boys’ clothes. Look at this picture of a room. How much can you tell about the person who lives here? Is it a boy or a girl? What are his / her hobbies? Discuss your ideas with a partner. Grammar 4c Section A Grammar Focus~4c 21 1. — Who’s singing in the next room? — It _ be her. She has gone to New York. A. can’t B. must C. shouldn’t D. can 2. —Whose T - shirt is this? —It _ be John’s. It’s _too small. A. can’t; much too B. can’t; too much C. mustn’t; much too D. mustn’t; too much 3. — Where are you going this month? — We_ go to Xiamen, but we're not sure. A. needn’t B. must C. might D. mustn't 4. — Have you decided where to go for your summer vacation? — Not yet. We _ go to Qingdao. It's a good place for vacation. A. may B. need C. must D. can 5. — Must I water the flowers now, mum? — No, you _. You _ do it later. A.mustn’t; must B.mustn’t; may C.needn’t; may D.needn’t; must Exercises A A C A C 22 6. — _ 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 7. —Who’s singing in the garden? —It _ be Mr. Brown. He always practices singing at this time. A. must B. can’t C. need D. could 8. I _ follow you. Would you please repeat it? A. can’t B. mustn’t C. needn’t D. shouldn’t 9. —The driver_be hurt badly in the accident. —That's true. Let's send him to the hospital as soon as possible. A. need B. can't C. must D. may not 10. — I can’t find my phone anywhere. — You _ have lost it while shopping. A. may B. can C. should D. would A A A C A 23 中考链接 用情态动词的正确形式填空 After a long walk, you _ feel tired. The man _ be Mr. Li. He went to HK yesterday. My mom _ go to visit grandpa. I am not sure of it. The notebook _ be Mary’s because it has her name on it. must can’t may/might/ could must I. Close your book and try to recite Grammar Focus. 1. 这是谁的排球? _ _ is this? 这一定是卡拉的。她热爱排球运动。 It _ be _. She loves volleyball. must Carla’s 2. 这是谁的发带? _ _ _ is this? 它可能是梅的发带。或者可能属于琳 达。她们两人都是长头发。 It _ be Mei’s hair band. Or it _ belong to Linda. They _ have long hair. could might both Whose hair band Whose volleyball 3. 那晚你看见了什么? _ did you see that night? 我不确定,但肯定不可能是狗。它更大。我想也许是一头熊或一匹狼。 I’m _ _, but it _ _ a dog. It was bigger. I think it _ _ a bear or a wolf. What not sure can’t be might be III.用适当的情态动词填空。 1. — Susan has bought a large house with a swimming pool. — It _ be very expensive. I never even dream about it. 2. — Listen! Is Mr. Green giving a report in the hall? — No, it _ be him. He has gone to Japan. 3. Ann hasn’t come to school today. I think she_ be ill. 4. The guitar _ belong to Alice. She likes playing the guitar. 5. — I wonder if this is Jack’s book. — It _ be his. It has Linda’s name on it. must can’t may/might/could may/might/could can’t 1. must, can /could, may /might等情态动词表推测 肯定推测: must, can / could, may / might都可以表示肯定推测 must 表示把握性极强的推测,意为“肯定、一定” can / could和 may / might表示把握性不大的推测,意为“也许、可能”。 否定推测: can’t 意为“不可能”,表示很有把握的否定推测 may not意为“可能不”,表示把握性不太大的否定推测 Summary THANK YOU $$