Unit 13 Section A 1a-3c课件2024-2025学年人教版九年级英语

Unit 13 Section A 1a-3c Here are some words related to different kinds of pollution. Write them in the box below. Then add more words. 1a Listen and complete the sentences. What was the problem? The river was _____________. Even the bottom of the river was full of _________. There were no more ______ for fishermen to catch. really dirty rubbish fish 1b What caused the problem? People are throwing _______ into the river. Factories are putting ______ into the river. How should the problem be solved? We should write to the ____________ and ask them to ___________ the factories. Everyone should help to __________ the river. litter waste government close down clean up Listen again and answer the following questions. What does Tony want to do later this afternoon? He wants to go swimming with Mark in the river later this afternoon. Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a. 1c Mark: The river was dirty. Even the bottom of the river was full of rubbish. Tony: But it used to be so clean! Mark: Yes, but people are throwing litter into the river. Tony: Everyone in this town should play a part in cleaning it up! Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about. land pollution B. air pollution C. noise pollution D. water pollution 2a Listen again and complete the sentences. 1. The air is badly polluted because there are ___________ on the road these days. 2. Factories that burn coal also ________ the air with a lot of black smoke. more cars pollute 2b 8 3. There is also too much rubbish and waste. People _________________ things every day. 4. People are also littering in ______________ like parks. This is turning beautiful places into ugly ones. are throwing away public places Use the information in 2a and 2b to role-play conversations between Jason and Susan. 2c Jason: The air has become really polluted around here. I’m getting very worried. Susan: Yes, I used to be able to see stars in the sky. Jason: The problem is that ... What should we do to save the earth? Turn off the lights when you leave a room. Stop riding in cars. Stop using paper towels or napkins. n. 餐巾, 餐巾纸 Interviewer: Jason and Susan, what are your ideas for solving these problems? Jason: Well, to cut down air pollution, we should take the bus or subway instead of driving. Susan: Yeah, or ride a bike. There are other advantages of bike riding . It’s good for health and it doesn’t cost anything! Role-play the conversation. 2d Interviewer: Great ideas! What about waste pollution? Susan: Mmm, I think simple things like bringing a bag to go shopping can help. I started doing that a year ago. Jason: Me, too. Also, I never take wooden chopsticks or plastic forks when I buy takeaway food. I use the ones at home. Susan: And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone. Interviewer: So together, our actions can make a difference and lead to better future! Complete the chart. Problems Solving problems air pollution waste pollution take the bus, subway or ride a bike instead of driving bring a bag to go shopping use chopsticks or forks at home throw rubbish in the bins 1.We’re trying to save the earth! 我们正在竭尽全力拯救地球! try to do = try one’s best to do 努力去做某事 e.g. We’ll try to finish the work in a week. 我们将努力在一周内完成这项工作。 Language points 2.Here are some words related to different kinds of pollution. be related to 与……有关 e.g. Is the driver related to the accident? 司机和这起事故有关吗？ 3. Even the bottom of the river was full of rubbish. Yes, but people are throwing litter into the river. litter和rubbish都可指“垃圾”，用作不可数名词。 litter指“（室内或公共场所）乱扔的废物（纸屑、不要的包装纸、废瓶等）”还可回收。 rubbish指“没用的东西（被扔或将要丢弃的无用的东西）”不可回收。 e.g. Throw the rubbish out. 把垃圾扔出去。 The room is full of rubbish. 房间里堆满了垃圾。 Pick up your litter after a picnic. 野餐后将废弃物收拾好。 4.Everyone in this town should play a part in cleaning it up! play a part in 在……方面起作用 e.g. A good diet plays a large part in helping people live longer. 健康的饮食在帮助人们长寿方面起着非常 大的作用。 5. It’s good for health and it doesn’t cost anything! cost v. 花费；使付出，指花费金钱，主语通常是物。cost的过去式和过去分词均为cost。 e.g. The new shirt cost Mr Wang 200 yuan. 王先生花了200元买了新衬衫。 How much does the new computer cost? 新电脑花了多少钱？ take, spend, pay & cost take，spend，pay和cost都可以表示“花费”， 但它们的用法各有不同。 take多表示花费时间 常用于It takes sb. some time to do sth.句型中， 其中it作形式主语。 e.g. It usually takes me 40 minutes to cook the dinner. spend多表示花费时间和金钱，主语常是人， 常用于sb. spend(s) some time / money on sth. sb. spend(s) some time / money (in) doing sth. 两种句型。 e.g. David spent 2,000 yuan on the new machine. My father spends an hour (in) watching the news on TV every day. pay多表示花费金钱，主语通常是人，常用于 sb. pay(s) some money for sth.句型。 e.g. Tommy paid 20 yuan for his breakfast yesterday. cost多表示花费金钱，主语通常是物，常用于 sth. cost(s) (sb.) some money.句型。 e.g. The new dress cost Linda 88 yuan. 根据句意用take, spend, pay或cost的适当形式填空。 1. That new car ________ them lots of money. 2. Mona __________ 50 yuan on the books just now. 3. It usually _______  me an hour to do my homework. cost   spent  takes 【运用】 4. You should __________  some time practising your pronunciation. 5. My brother _______ 6, 000 yuan for the new computer yesterday. spend paid Exercises bin, cost, coal, fisherman, takeaway 1. A hot ________ fell out of the fire and burnt the carpet (地毯). 2. A __________ is hot cooked food that you buy from a shop or restaurant and eat somewhere else. coal takeaway Ⅰ.根据句意，从方框中选择恰当的单词填空， 有的需要变换形式。 3. Do you want this or shall I throw it in the ________? 4. Writing such a long novel ________ much time and patience.　 5. Look! Some ____________ are catching fish over there. costs fishermen bin Ⅱ.根据汉语意思完成英语句子。 1. 工人们正在竭尽全力降低事故率。 The workers are doing all they can ___________ the accident rate. 2. 左边第二个房间里堆满了书。 The second room on the left is _________________ books. to cut down full of / filled with 3. 你应该向那些参与挽救病人的医生道谢。 You should say thanks to those doctors who have _________________ saving the patient. played a part in 4. 拉里将去开会，而不是我。 Larry will go to the meeting __________ me. instead of 5. 我的目的是把这件坏事变成好事。 My purpose is to ________ this bad thing ________ a good one. 6. 保持教室干净是我们的责任。 It’s our duty to ________ the classroom _______. turn keep into clean 7. 我们小区的噪音污染很严重。 The _________________ in our neighborhood is very serious. noise pollution Ⅲ.汉译英。 我尽量今天晚上完成工作。 他在工作中起重要作用。 这些问题都是密切相关的。 I will try to finish the work this evening. He plays an important part in the work. These problems are closely related. Many jobs require people who are good at English. If your English is good, you will have one more ______ when searching for jobs.  method B. interest C. advantage D. examination 中考链接 句意为“很多工作要求擅长英语的人。如果你的英语很好，在找工作的时候会拥有又一个优点。” 方法 优点 兴趣 考试 —The teenagers clean up the city park every Saturday. —Sometimes small things can make a _______.    A. promise            B. conversation          C. difference         D. discussion 中考链接 句意为“那些青少年每周六都打扫城市公园。有时候一些小事也会产生（好的）影响。” 承诺 不同 对话 讨论 Can you share something about how to protect our environment? Problem: air pollution, waste pollution... Solutions: recycle books and paper, stop driving cars... Let students review what they have learnt. 39 We should take the bus or subway instead of driving. Yes, or ride a bike. It’s also good for our health. For the waste pollution, I never use wooden chopsticks in restaurant. And throw rubbish in the bins. 40 What do you know about these animals? Do you think they are endangered? Why? Have ever heard of the sharks? adj.濒危的 鲨鱼 Let students talk about what are they first. 41 Look at the picture and the topic , What’s the main idea of this passage? Can you guess? A.The shark fin soup is famous and expensive. B.The numbers of the sharks have fallen very fast. C.The sharks are endangered in the world. √ Guess what does the passage talk about. 42 While-reading 43 Paragraph 1 help save the sharks Paragraph 2 the sharks are endangered Paragraph3 the shark fin soup Read the passage quickly. Then match each paragraph with the main idea. 44 Where shark fin soup is popular Number of sharks caught and traded every year How government can help Two environmental groups against “finning” southern China 70 million develop laws to stop the sale of shark fins WildAid and the WWF (鱼)鳍 Read the passage about sharks and complete the fact sheet below. 3a 1. Many people do not realize they are killing a whole shark ______ they enjoy a bowl of shark fin soup. 2. Sharks are at the top of the food chain, ____ if their numbers drop, the ocean’s ecosystem will be in danger. when Read the passage again and fill in the blanks with the words in the box. 3b so although if but when so 在…的顶端 食物链 生态系统 46 3. Many think that sharks are too strong to be endangered, _____they are wrong. 4. _________ there are no scientific studies to support this, a lot of people believe that shark fins are good for health. 5. Sharks may disappear one day ___ we do not do something to stop the sale of shark fins. but Although if adj.科学的 Some people like to eat shark's fin soup, especially in_______ China. But getting the shark's fin is very_____. When people catch sharks, they____ _____their fins and throw the sharks back into the ocean. The shark slowly dies because it can’t_______ without the fin.And it is also________to environment. Shark are at the_____of the food chain. If the________of sharks drops too low, it will break the balance of nature. Please say no to eating the shark fin soup, and take action to save the sharks! southern cruel cut off swim harmful top numbers 采取行动 Fill in the blanks. Post-reading 49 No shark fin, fish every year! Save the animals! Save ourselves! Save the earth! What attitude should we take towards sharks? 50 What can we do to save ourselves? Because of Novel coronavirus, we Chinese have had a special Spring Festival.  Nobody wants to get the disease, but how should we prevent NCP and protect ourselves? 51 There is no doubt that hunting wild animals has a bad influence. For one thing, it causes the imbalance of our ecosystem. For another, it leads to the spread of infectious diseases from animals to us human beings, such as SARS and Novel coronavirus. We should never have wild animals for food. Let students read this just for reference. 52 [观察1] When people catch sharks,they cut off their fins and throw the sharks back into the ocean. [探究] cut off 切掉；切断 The electricity has been cut off again. 又停电了。 Let students guess the meaning of the words in red. 53 [观察2] This is not only cruel, but also harmful to the environment. [探究] 1. cruel adj.残酷的；残忍的 we shouldn’t be cruel to the animals. 我们不应该虐待动物。 2. be harmful to ...对...有害，其同义短语be bad for... The air pollution is harmful to our health. 空气污染不利于身体健康。 Let students guess the meaning of the words in red. 54 [观察3] Without a fin,a shark can no longer swim and slowly dies. [探究] no longer 不再；强调时间和动作不再持续相当于not...any longer She no longer lives here. =She doesn’t live here any longer. 她不再住在这儿了。 Let students guess the meaning of the words in red. 55 [观察4] But in fact, around 70 million sharks are caught and traded in this industry every year. [探究] 1.in fact事实上；实际上 In fact, the word salary comes from the word salt. 事实上，薪水这个词来自于盐这个词。 2.Industry n.工业；行业。既可以做可数名词也可以做不可数名词，heavy/light industry重、轻工业 We need to develop local industries. 我们需要发展地方工业。 Let students guess the meaning of the words in red. 56 [观察5] The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years. [探究] the numbers of ...的数量；是the number of 的复数形式。此处，numbers 表示不同种类鲨鱼的数量。 The numbers of different kinds of trees are growing quickly. 不同种类的树的数量正在快速增长。 Let students guess the meaning of the words in red. 57 the number of ...的数量 a number of 一些；若干 +可数名词复数做 主语时，谓语动词 用单数 [辨析] the number of 与a number of +可数名词复数做 主语时，谓语动词 用复数 [观察6] They have even asked governments to develop laws to stop the sale of shark fins. [探究] law n.法律；法规。 lawyer n.律师 obey the law遵守法律 break the law违法 He is a lawyer and he always tell us that everyone should obey the law. 他是一名律师并且总是告诉我们要遵守法律。 Let students guess the meaning of the words in red. 59 [观察7] So far, no scientific studies have shown that shark fins are good for health, so why eat them? [探究] so far 到目前为止；迄今为止。 常用于现在完成时 I wasn't too happy with what I'd written so far. 我对于目前已写完的这些并不太满意。 Let students guess the meaning of the words in red. 60 1.They ______their fins when people catch sharks.(切掉）  2.Mr.Li is _________ a music lover.(不再） 3.He was standing ____________the stairs.(在...顶端） 4._______, he doesn’t like English.(实际上） 5.Now,this kind of car ________20 percent.(下降了） Exercise  根据汉语意思完成下面的句子 cut off no longer at the top of In fact falls by 61  1. —Why not ask Bob to join us in the trip to the zoo tomorrow? —Everyone in our group loves animals, but he always seems ____. A.anxious B.personal C.cruel D.careless 2.Greenhouse gases are_____to the environment. A.good B.better C.harm D.harmful C D  3.A number of visitors ____visiting the West Lake and the number of the visitors___ increasing. A. are; is B. is; are C. are; are D. is; is 4.The writer is so popular that he ____more than 200,000 books so far. A. sell B. sold C. has sold D. have sold A C 1.Pollution is _______ (harm) to all the life on earth. 2.The environment is getting worse. We should stop___________(cut down) trees at will(随意）. 3.The number of the students in our school ____(be) two hundred. 4.So far, no _________(科学的）studies have shown that shark fins are good for health. scientific harmful is cutting down  用括号里单词的适当形式填空 Summary Para.1 shark fin soup is popular in southern China. Para.2 cruel: harmful: endangered: cut off their fins and throw the sharks back into the ocean. bring danger to all ocean life The numbers of some kinds of sharks have fallen by over 9percent in the last 20 to 30years. 65 $$