Unit13Section B 3a-3c 课件 2025-2026学年人教版英语九年级全册

Unit13 We're trying to save the earth! SectionB 3a-Self check 语言能力： 复习并巩固本单元所学词汇，复习后缀构词法。 文化意识 了解环境问题的现状，起因以及解决方法，激发学生强烈的社会责任感和对未来发展的思考。 思维品质： 通过问题-原因-措施的思维框架开展写作，提高写作的逻辑性和结构性。 学习能力： 能结合本单元的环境问题和环保措施，完成写作任务。 能熟悉写作流程，掌握写作要领（问题-原因-措施）， 积累高分高频表达方式，提高写作水平。 Objectives Answer the questions 1.What kind of pollution is it? 2.What cause it in the video? Plastic(white) pollution (白色污染) People throw plastic waste into the ocean. They also throw it on the beach. 3.What are the influences of the pollution? A lot of ocean lives die because of it. If people eat the seafood,it will be harmful to their health. throw waste and rubbish in the bins. learn how to sort garbage bring a recyclable bag to go shopping instead of plastic bags. never take plastic boxes and forks when we buy takeaway food 1 3 2 4 How can we solve it? for the public tell the public about the damage(危害) of plastic pollution How can we solve it? for the government make strict rules to publish(惩罚) the people who litter everywhere. 3b Write a letter to the city mayor about the problems and your suggestions. In your letter, describe the environmental problems in your town/city. What are the problems? Where are they? What or who is causing these problems? Then, give suggestions or possible ways to solve the problems. I think that ... We should/could ... I suggest ... 市长 what why how 体裁 话题 人称 时态 Analyze the question 应用文(书信) 环境保护 一般现在时 第一人称为主 Analyze the structure beginning body ending self-introduction writing purpose what (pollution) why (reasons) how (solutions) show hope and resolutions Dear city mayor， I’m Li Hua, a student who is worried about the environment in our city. I’m writing this letter to share my ideas about how to improve our environment. As we all know,there is more and more plastic pollution in the ocean,on the beach,in the street....almost everywhere!That’s because people use too many things made of plastic and don’t throw them in the correct bins. It has made a big difference to ocean life and is even harmful to human health.We can’t afford to wait any longer to take action!Here is my advice.First,I suggest that the government should organize some activities to teach people the damage(危害) of plastic pollution. It’s also a good idea to fine(罚款) people for littering.Second, to cut down plastic pollution, we had better not take plastic boxes and forks when we buy takeaway food.Last but not least,we must learn how to sort garbage and throw waste and rubbish in the correct bins. I hope my suggestions can be useful. All these small things can add up and become big things that can improve the environment. Yours sincerely， Li Hua self-introduction writing purpose what (pollution) why (reasons) how (solutions) show hope and resolutions Dear city mayor， I’m Li Hua, a student who is worried about the environment in our city. I’m writing this letter to share my ideas about how to improve our environment. As we all know,there is more and more plastic pollution in the ocean,on the beach,in the street....almost everywhere!That’s because people use too many things made of plastic and don’t throw them in the correct bins. It has made a big difference to ocean life and is even harmful to human health.We can’t afford to wait any longer to take action!Here is my advice.First,I suggest that the government should organize some activities to teach people the damage(危害) of plastic pollution. It’s also a good idea to fine(罚款) people for littering.Second, to cut down plastic pollution, we had better not take plastic boxes and forks when we buy takeaway food.Last but not least,we must learn how to sort garbage and throw waste and rubbish in the correct bins. I hope my suggestions can be useful. All these small things can add up and become big things that can improve the environment. Yours sincerely， Li Hua transition linking Dear city mayor， I’m Li Hua, a student who is worried about the environment in our city. I’m writing this letter to share my ideas about how to improve our environment. As we all know,there is more and more plastic pollution in the ocean,on the beach,in the street....almost everywhere!That’s because people use too many things made of plastic and don’t throw them in the correct bins. It has made a big difference to ocean life and is even harmful to human health.We can’t afford to wait any longer to take action!Here is my advice.First,I suggest that the government should organize some activities to teach people the damage(危害) of plastic pollution. It’s also a good idea to fine(罚款) people for littering.Second, to cut down plastic pollution, we had better not take plastic boxes and forks when we buy takeaway food.Last but not least,we must learn how to sort garbage and throw waste and rubbish in the correct bins. I hope my suggestions can be useful. All these small things can add up and become big things that can improve the environment. Yours sincerely， Li Hua give advice Good expressions beginning body ending I’m ..., a student who is worried about/care about.... I’m writing this letter to share..with you/tell....to you. As we all know,there is more and more....pollution ....pollution is becoming more and more serious That’s because/why.... make a big difference to;be harmful to;can’t afford to... suggest that sb.(should)do sth. should/can/must/had better(not) do sth. It’s a good idea/important to.. All these small things can add up and become big things that can improve the environment. I hope my advice/suggestions can be helpful. what pollution? air pollution Why the reasons The air is badly polluted because there are a lot of cars on the road these days. Factories that burn coal also pollute the air with a lot of black smoke. ride a bike and take the bus or subway instead of driving. How solutions solutions Governments should close down the factories that pollute the air with a lot of black smoke. Governments can encourage people to use cars that run on electricity. Dear city mayor， I’m Li Hua.I’m glad to write this letter to you. I’d like to talk about the environmental problems in our city. As we can see,the air is badly polluted because there are plenty of cars on the road these days.What’ worse,factories that burn coal also pollute the air with a lot of black smoke.It has had a bad influence on the quality of air(空气质量) and is even harmful to human health.We can’t afford to wait any longer to take action!Here is my advice.First,I suggest that we should ride a bike and take the bus or subway instead of driving. What’s more,governments can encourage people to use cars that run on electricity,At last,It’s necessary for governments to close down the factories that pollute the air with black smoke. I hope my suggestions can be useful. Everyone should play a part in saving our home.Our actions can make a difference and lead to a better future! Yours sincerely， Li Hua Sample2 项目 标准 自我评价 同伴评价 教师评价 结构 （1-3分） 段落合理(3段)，结构完整 衔接自然 内容 （6-7分） 要点：1.________________________ 2.______________________________ 3.______________________________ 语言 （3-4分） 句法正确，语言优美,内容丰富 卷面 （1分） 书写工整 介绍自己+写信目的 污染-原因-措施 希望&决心 时态： 文体： 人称： 一般现在时为主 书信 第一人称为主 Self Check 1. Write different forms of the words. Then add more to each group. v. — n. n. — adj. pollute— fame— act— wood— protect— science— inspire— health— build— south— create— care— pollution famous action protection inspiration building creation creativity wooden scientific healthy southern careful adj. — n. adj. — adv. different— slow— important— wide— sudden— real— difference importance slowly widely suddenly really Add more words to each group. v.—n.: educate—education, meet—meeting, paint—painting n.—adj.: wool—woolen, north—northern, wind—windy adj.—n.: silent—silence, patient—patience, absent—absence adj.—adv.: actual—actually, quick—quickly, sure—surely 2. Match each statement with the grammar structure. Statement Grammar The river used to be so clean. Present progressive We have seen many changes in the environment. Modal verbs People should take public transportation more. Passive voice The river is polluted by factories. used to The air pollution is getting worse and worse. Present perfect ; 3. Write ways to cut down on these kinds of pollution. Kinds of pollution Ways to cut down water pollution land pollution noise pollution air pollution Kinds of pollution Ways to cut down water pollution land pollution noise pollution air pollution ask factories not to put waste into the rivers; try not to use plastic bags when shopping build airports away from places where people live encourage people to use public transportation instead of driving Lavf58.46.101 $