Unit 2 Topic 2 SectionA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尘暴形成、树木功能及保护措施，通过自然灾害图片导入，结合新闻听力解析现象，用图片排序活动梳理成因，再以视频、思维导图构建“现象-原因-解决”学习支架，帮助学生逐步掌握主题内容。 其亮点在于多模态输入与任务链设计，通过图片排序培养逻辑思维（思维品质），小组讨论和倡议书写作提升语言表达与解决问题能力（语言能力），融入“绿色长城”案例及“绿水青山就是金山银山”理念，增强文化意识。学生能深化语言应用，教师可借任务链高效推进教学。

仁爱科普版 九年级英语 上册 Unit 2 Saving the Earth Topic 2 All these problems are very serious. Section A Learning objectives: At the end of the class, you will be able to: 1.Tell how sandstorms come into being. 2. Know the functions of trees. 3. Think about ways of protecting trees. 4. Write a proposal(倡议书) to call on people to protect trees. What can you see in these pictures? earthquake tornado/tɔːˈneɪdəʊ / flood drought What kind of weather? What do you think of it? Sandstorm /ˈsændstɔːrm / 3 Do you know how sandstorms come into being? Number the pictures and talk about the sandstorm in groups. wash the earth away many trees change into desert/ˈdezət / forests gone sandstorms come into being cut down trees 4 1 5 3 2 6 They are talking about sandstorm. Listen to 1a and choose the best answer. The boy and girls are talking about ______. A. different types of sandstorms B. the reasons for sandstorms C. sandstorms in different cities 1b What causes these sandstorms? People have cut down too many trees. As a result, a lot of rich land has changed into desert. Task1: Watch the video and fill in the blanks. Kangkang,Maria and Jane are talking in a room. The wind outside is blowing . But it’s better than the last few years. There were sandstorms before. While Kangkang was walking down the street, he couldn’t see . The sand really hurt his face. The weather was so bad. Jane said because people too many trees. As a , a lot of rich land had into . Trees could stop the wind from the earth away.Kangkang said a lot of water could be saved by forests.Jane said trees could also the water from washing the earth away. down trees affected the weather so much. It was 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. strongly anything cut down result changed desert blowing stop harmful Cutting Read 1a and complete trees’ functions. 1c Trees’ functions Trees can stop the wind from blowing the earth away. They can also stop the water from washing the earth away. B. A lot of water can be saved by forests. A. ____________________________. C. ____________________________. DISCUSS: Do you have more ideas about the functions of trees? (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 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. Read 1a and understand. effects cause,result function measure Trees' functions A. stop ....blow away B.water......saved c. stop....water wash The Green Great Wall why? Task 3: Retell 1a with the help of mind-map ...... Task 2: Trees are main fighters against sandstorms. How can we save trees? eg: We must stop people from cutting down trees. We should reduce the use of throwaway chopsticks. Do you have more ideas? 2 Complete the sentences with the correct forms of the given phrases in the box. as a result, change into, do something, stop…from, blow…away 1.People have cut down such a large number of trees that the land _____________________desert. 2.There are fewer trees left, so the wind always _______the earth ________. 3.Air pollution has become a serious problem, so we must _____________ to reduce[rɪˈdjuːs] it. 4.we should try our best to _________ people ________ cutting down the trees. 5.In the future, human beings can protect the trees well._____________, animals will live a happy life in the forest. has changed into blows away do something stop from As a result Task 4: Write a proposal to call on people to protect the trees. eg:Dear people, People have cut down such a large number of trees that the land has changed into desert. There are fewer trees left, so the wind always blows the earth away. Air pollution has become a serious problem, so we must do something to reduce it. First, we should try our best to stop people from cutting down the trees. Second, we should reduce the use of throwaway chopsticks. If everyone makes a contribution to building a green city. We believe we can protect trees well. As a result, we will live a happy life. Summary checklist 1 Do I know how sandstorms come into being? YES NO 2 Do I understand the conversation between Kangkang,Maria and Jane? YES NO 3 Can I use the expressions learnt to talk about the cause of sandstorms and the importance of trees? YES NO 4 Do I realize why and how to protect trees? YES NO Homework 1. Read 1a for 3 times and try to retell the dialogue. 2. Finish off exercise of this lesson. Green Mountains and Clear Water Are Equal to Mountains of Gold and silver. 绿水青山就是金山银山 Lavf58.20.100 EVCapture4.2.2软件录制 Lavf57.62.100 本视频由湖南一唯信息科技开发的EV录屏软件录制，www.ieway.cn Lavf58.20.100 $