Unit 8 Section A （Grammar Focus-4c） 课件 2025-2026学年人教版（2012）英语九年级全册

人教版英语9年级全册培优备课精做课件 Unit 8 Section A (GF-4c) Unit 8 It must belong to Carla. 授课教师: Home . 班 级: 九年级(-)班 . 时 间: . 2026年2月11日 2026年2月11日星期三11时31分59秒 2026年2月11日星期三11时31分59秒 Review Do you still remember who these things belong to? Why? S1: Whose … is it? S2: It must / might be / could be / can’t be … Grammar Focus Read the sentences. 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. 情态动词表示推测 情态动词can, could, may, might, must可以用来表示对发生或存在的事情的推测。这里could和might不是过去时,推测的语气不如can, may强; must表示推测时语气最强,意为“肯定,断定”。 情态动词的推测程度为: may / might表示“有可能;大概”,might的语气比may要弱,相当于perhaps; can / could表示“或许”,其可能性比may / might要小,相当于possibly; must的可能性最强,语气较肯定。 一、 从方框中选词并用其适当形式填空。 1. She bought two _ in the clothes store. 2. Jack felt tired so he _ down on the sofa to have a rest. 二 三 四 五 一 六 七 coats lay 点拨:由句意“杰克感到很累,因此他躺在沙发上休息”可知应该用lie, 由felt可知空格处也应该用一般过去时,故填lay。lie(撒谎)—lied(过去式)—lied(过去分词); lie(躺;位于)—lay(过去式)—lain(过去分词)。 lie, sleep, outdoors, coat, laboratory 中考考法 3. There are two _ in our school. We often do experiments(实验)there. 4. Jack woke up early this morning, so he feels very _ now. 5. It’s really cold _ in winter in the north of China. laboratories 二 三 四 五 一 sleepy lie, sleep, outdoors, coat, laboratory 六 七 outdoors 中考考法 表示对现在及将来状态、动作的推测 1.当表示对现在及将来状态的推测时,一般用can / could, may / might, must + 动词原形。 e.g. Monica can’t be in the classroom. Monica不可能在教室。 You may come here whenever you like. 你想什么时候来就什么时候来。 2.当对现在及将来正在发生的动作进行推测时,一般用can / could, may / might, must + be + doing(动词的进行时)。 e.g. — Where is Cindy? Cindy在哪儿呢? — It’s a fine day. She may / might be enjoying the sunshine on the lawn. 今天天气好,她很可能在草坪上晒太阳呢。 Your sister can’t be touring Nanjing. I saw her just now. 你姐姐根本不可能在南京旅游,我刚刚还看见她呢。 6. Tina lost her favorite pet dog. She _ (can/ must) be worried about it. 7. — Is this red jacket Tony’s? — No, it _ (may/can’t) be his. He doesn’t like red. 8. — Where’s Yuan Bao? — I’m not sure. He _ (could/must) be in the bedroom. 二、根据句意,选择合适的词填空。 must 二 三 四 五 一 can't could 六 七 中考考法 9. — What will the weather be like tomorrow? — It _ (must/might) be windy or rainy. I’m not sure. 10. Alice _ (must/can’t) be working now, because the light in her room is still on. might 二 三 四 五 一 must 六 七 中考考法 表示对过去状态、动作的推测 1.当表示对过去的状态、动作推测时,must / may / might可用在 肯定句中表示肯定的推测,一般用must / may / might + have done(现在完成时)表示。 e.g. The boy may have got lost. It isn’t easy to find this place. 这个男孩可能迷路了,这个地方不好找。 She may have missed the bus. 她也许错过公共汽车了。 2. can / could用在否定句中表示否定的推测,一般用can / could + not + have done(现在完成时)表示对过去的状态、动作 的推测。此外,can / could还可用在疑问句中表示推测。 e.g. He can’t have forgotten. We were talking about it this morning. 他不可能忘了,我们今天早上还说这事了。 There isn’t any water on the road. It can’t / couldn’t have rained last night. 路上一滴水都没有,昨天夜里不可能下雨了。 三、单项选择。 11.[2024 成都中考]Having an ice-cream in the hot summer _ be cool. A. must B. need C. can’t 12.[2024 长春中考]Lili _ be at home. She has gone to the farm to pick apples. A. mustn’t B. can’t C. must D. can A 二 三 四 五 一 六 七 B 中考考法 13. You are not allowed to play with fire in the forest. It _ kill plants, animals and even people. A. might B. might not C. should D. should not 14.[2024 遂宁中考]— Tina, is that our math teacher Mr. Wang? — It _ be Mr. Wang. He has gone to Beijing. A. must B. mustn’t C. can’t D. can A 二 三 四 五 一 六 七 C 中考考法 4a Choose the best way to complete each sentence using the words in the 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 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 must be 4b Complete these responses. 1. A: Many people are wearing coats. B: The weather must be _. 2. A: Sally has been lying in bed all dy. B: She might _. 3. A: This restaurant is always crowed. B: The food _. 4. A: Whenever I try to read this book, I feel sleepy. B: It can’t _. getting colder / cold outside be ill must be delicious be that boring 4c 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. 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. How much can you tell about the person in each room? Share with your partners. We all know that teenagers should have enough 15._ or they’ll feel 16._ at school. Some students even fall 17._ in class because they’re too tired. So it’s necessary 18._ for more than eight hours every day. 四、[微语境练词汇] 用sleep 的适当形式填空。 二 三 四 五 一 sleep 六 七 sleepy asleep to sleep 中考考法 Last Sunday, I went to the cinema. After the movie, I found a smartphone on the seat. It 19._ be an adult’s phone, because there were many cute stickers on it. I thought it 20._ belong to the little boy who sat next to me. He was playing with his phone before the movie. But when I turned it on, I saw a photo of a little girl. So it 21._ be hers. I gave it to the cinema staff to help find the owner. 五、用恰当的情态动词填空完成短文。 couldn't 二 三 四 五 一 六 七 might must 中考考法 六、阅读理解。 二 三 四 五 一 Here’s how to write a message that can only be read by a person who knows the trick to make your words appear. You’ll need Half a lemon A cup with water in it A cotton swab(棉签) White paper An electric lamp Milk 六 七 中考考法 1. Squeeze(挤)lemon juice into water and mix them. 2. Dip(蘸)the swab into the mixture (混合液) and write some words on the paper. 3. Let the paper dry well. Show it to someone and ask if he or she can see a message on it. 4. Hold the paper close to the light bulb to heat it. Can you see the writing now? Lemon juice is clear, but it has chemicals(化学物质) that have carbon (碳). The chemicals are broken down easily when they are heated, and the carbon makes the words have a dark color. 二 三 四 五 一 六 七 中考考法 Repeat the experiment and write with milk on the paper. Does the writing appear when heated? 二 三 四 五 一 六 七 中考考法 22. In which class can you make this experiment? A. English. B. Physics. C. Chemistry. D. Math. 二 三 四 五 一 六 七 C 中考考法 23. What can we do if we want to read the message written in the juice and water mixture? A. Put the paper into water. B. Make the paper dry well. C. Give the paper enough heat. D. Squeeze more lemon juice. 二 三 四 五 一 六 七 C 中考考法 24. What can we learn from the text? A. The carbon helps make the words show up. B. People can also see the secret messages on black paper. C. The chemicals in lemon are difficult to break down when heated. D. We should use the light bulb to heat the lemon juice first. 二 三 四 五 一 六 七 A 中考考法 25. What can be the best title for the text? A. What Amazing Carbon B. Math and the Secret Messages C. The Importance of Making Secret Messages D. What Surprising Secret Messages D 二 三 四 五 一 六 七 中考考法 26. Where can we read this passage? A. In a history book. B. On a movie poster. C. In a science magazine. D. In a book introduction. C 二 三 四 五 一 六 七 中考考法 七、短文填空。 Taos is a small town in New Mexico, the USA. Many people come here for a visit every year. They do not come to see the beautiful scenes( 景色) 27._ eat delicious food. They come to listen to a kind of strange sound: the Taos Hum. or 二 三 四 五 一 六 七 中考考法 Why is the sound strange? 28._ (one), the Taos Hum is quite different. Someone says it sounds like a little bee f lying around you. Others think it sounds like a car 29._ (move) in a faraway place. Secondly, nobody knows 30._ the sound comes from. Joe Mullins, a scientist from the University of New Mexico, 31._ (put) some instruments in places where people could hear the hum, 32._ those instruments couldn’t “hear” any hum! Firstly 二 三 四 五 一 六 七 moving where put but 中考考法 Others who wanted to find the hum failed, too. Many people try their best 33._ (explain) that strange sound. Someone says it is a noise made 34._ insects. Someone believes it must come from some secret projects. Someone says maybe there 35._ (be) an underground UFO base! But no one is sure which is right. to explain 二 三 四 五 一 六 七 by is 中考考法 It might be interesting for 36._ (visit) to listen to the hum, but it is not for people who live in the town. They have to hear the sound all the time. That is really a hard life. visitors 二 三 四 五 一 六 七 中考考法 $