Unit 2 Saving the Earth Topic 2 Section A 课件2025-2026学年仁爱科普版（2012）英语九年级上册

该初中英语课件聚焦“沙暴成因及树木重要性”，涵盖sand, sandstorm等词汇，change into, stop...from...等短语及As a result...句型。课堂通过词汇导入（Lead-in）、对话情境（Kangkang等对话）搭建支架，结合听力理解、图片排序等活动，帮助学生逐步掌握主题内容。 其亮点在于融合语言能力与思维品质培养，通过听力任务（如Listen to 1a选主旨）、思维地图（复述树木功能）及小组问答，提升听辨、表达及分析能力。渗透环保意识（如“The Green Great Wall”案例），落实文化意识中的社会责任感。学生能在实践中巩固技能，教师可借助结构化活动提升教学效率。

Unit 2 Saving the Earth Topic2 All these problems are very serious Section A Learning aims 1. Learn some new words and phrases: sand, sandstorm, desert, although, change into, human being, stop...from... 2. Learn some useful sentences: (1)As a result, a lot of rich land changed into desert. (2)Trees can stop the wind from blowing the earth away. 3. Know the importance of trees. 4. Cultivate students’ awareness of caring for nature. Lead-in sandstorm n.沙暴 sand n.沙 New words A lot of rich land ____________ desert because people have cut down too many trees. changed into =turn into转换成，变成 It’s a desert. n. 沙漠 People deserted the houses. v.废弃，遗弃 New words As a result, s_________ come into being. andstorms Listen, look and say. (Kangkang, Maria and Jane are talking in a room. The wind outside is blowing strongly.) Maria: What a strong wind! Kangkang: Yes. But it’s better than the last few years. There were sandstorms before. While I was walking down the street, I couldn’t see anything. The sand really hurt my face. Maria: Why was the weather so bad? Jane: People cut down too many trees. As a result, a lot of rich land changed into desert. Trees can stop the wind from blowing the earth away. Kangkang: And a lot of water can be saved by forests. Jane: Trees can also stop the water from washing the earth away. Maria: Cutting down the trees affects the weather so much. Kangkang: Yes. It is harmful to human beings, animals and plants. Although there were sandstorms before, now we have built “The Green Great Wall”. Our environment has become much better. → We can change grapes into the wine. A lot of rich land has changed into desert. → 转换成，变成 Listen to 1a and choose the best answer. The boy and girls are talking about _______. different types of sandstorms the reasons for sandstorms sandstorms in different cities Focus on the main idea of the conversation when you listen for the first time. √ the last few years as a result blow...away wash...away cut down be harmful to=do harm to stop/prevent/keep...from doing sth walk along the street Activity 2: 单词闪现，快读快译。 单词闪现，快读快译。 Pre-listening ( ) ( ) ( ) ( ) ( ) ( ) 4 1 5 3 6 2 wash the earth away many trees change into desert forests gone sandstorms come into being cut down trees Do you know how sandstorms come into being? Listen to the tape and number the pictures. D E C B A Participatory Learning While-listening The boy and girls are talking about _______. different types of sandstorms the reasons for sandstorms sandstorms in different cities √ Listen to 1a and choose the best answer. Focus on the main idea of the conversation when you listen for the first time. Task 1 Read the tape and finish the thinking map. Trees can stop the wind from blowing the earth away. stop the water from washing the earth away. save a lot of water What’s the weather like today? What causes these sandstorms? It’s bad. The wind is so strong. And the sand really hurts people's faces. People have cut down too many trees. As a result, a lot of rich land has changed into desert. Listen again and answer the questions. Task 2 While-listening Listen again and answer the questions. Do we need to do something to protect the environment? How? Yes, we do. Although there were sandstrom, now we have built “The Green Great Wall”. although=though While-listening Retell the trees` functions to your partner according to the thinking map. You can do it like this: Trees can stop.... Trees also can save.... What`s more, trees can prevent.... 1.刚才 2.变成/转换成 3.阻止某人做某事 4.对......有影响 5.把......冲掉/洗掉(吹走，带走） 6.许多（谓语v.用复数） 7.......的数量（谓语v.用单数） 8.灭绝 9.砍倒 10.结果 11.对...有害 12.开始存在，产生 13.处于(…的)危险中 14.开始/逐渐做某事 15.足够的，大量的 1.just now = a moment ago 2.change/ turn --- into --- 3.stop sb. from doing sth..（prevent/keep) 4.have an effect on = affect 5.wash...away(blow/take) 6.a number of + c.n.(pl) 7.the number of + the + c.n.(pl) 8.die out 9.cut down 10.as a result 11.be harmful to = do harm to 12.come into being 13.be in danger (of) 14.come to do sth. 15.plenty of Exercises in class Read the tape again and answer the following questions. 1. What was the weather like before? 2.Why was the weather so bad? 3. How does cutting down trees do harm to us? 4.How is the situation now? There were sandstorms. When people were waking along the street, they couldn`t see anything. People cut down too many trees. As a result, a lot of rich land changed into desert. It can affect the weather and is harmful to human beings,animals and plants. We have built “The Green Great Wall”.Our environment has become much better. Work in pairs. Ask and answer the questions. 1. What was the weather like before? 2.Why was the weather so bad? 3. How does cutting down trees do harm to us? 4.How is the situation now? Summary We learn: 1.Some words: sand, although 2.Some phrases: change into, human being 3.Some sentences: (1)As a result, a lot of rich land has changed into desert. (2)Trees can stop the wind from blowing the earth away. We can: 1. Use the indefinite pronoun and adverb. 2.Talk about the sandstorm and its harm. While-listening Exercises in class 1. Our teacher have told us _____ the trees. A. cut off B. cut down C. not to cut off D. not to cut down 2. ____ they can swim, ____ they never go swimming alone. A. Although, but B. Though, but C. Although, / D. Because, so 3. The policemen tried to prevent traffic accidents _____ happening. A. from B. in C. to D. with 4. He didn’t cross the road until the red traffic lights changed ____ green ones. A. to B. into C. for D. in 5. _____ bad weather! We have to stay at home. A. What a B. How C. How a D. What 6. I knocked on the door ,but ______answered. A. somebody B. nobody C. anybody D. everybody 7. Your computer doesn’t work now ,is there _____with it? A. wrong something B. something wrong C. wrong anything D. anything wrong 8. -Would you like to have _____? -No, thank you. I’ve had enough. A.anything more B.something more C.more anything D.more something 9. he driver was badly hurt ,_______he couldn’t walk any more . A. at a result B.in the result C. with the result D.as a result B C A B D B D B D Read 1a and complete trees’ functions. Trees can stop the wind from blowing the earth away. A lot of water can be saved by forests. They can also stop the water from washing the earth away. Tree’s functions stop...from doing sth. 阻止.....做某事 While-listening Homework 1. Read 1a aloud&Learn the new words by heart. 2. Memorize the useful expressions and key sentences which we learn today. 3. Finish Section A in your workbook. 4. Preview Section B. null 61308.188 $