Unit 1 The Changing World Section A 2a-2d课件 2026-2027学年人教版九年级英语上册

该初中英语课件围绕“环境变化”主题，核心知识点为沙尘暴、农田短缺等环境问题词汇及相关句型。课堂从“身边变化”导入，结合李瑞家乡多方面变化，通过听力、小组合作排序等学习支架，构建“现象-问题-解决”的知识脉络。 其亮点在于融合语言能力、思维品质与学习能力培养。通过听力活动训练信息提取，小组排序环境问题并阐述理由培养逻辑分析，讨论解决措施提升合作探究。任务型教学结合词汇语法练习巩固知识，助学生提升表达与解决问题能力，为教师提供结构化设计，便于高效教学。

Unit 1 The Changing World What changes have taken place around you? Section A(2a-2d) Thinking Quality Learning Ability Emotional Attitude Language Ability Learning Objectives Master key words about sandstorms and use target sentences to discuss environmental changes coherently. Realize the value of environmental protection and build positive attitudes towards ecological development. Sort listening information via group cooperation to improve information analysis and learning skills. Compare past and present environment to analyze problems and conclude practical improvement methods logically. Li Rui is showing the changes of his hometown. changes in shopping changes in medical care changes in transpotation changes in environment What changes have taken place in Li Rui’s hometown? What are these signs stand for? sandstorms difficult environment farmland shortage lack of technology Rank the following problems from 1 to 4, with 1 being the worst. Give your reasons. 2a I think... is the worst because... I think sandstorms are worst, because they ruin crops and pollute our living air. sandstorms Poor water and dry soil stop crops from growing well and cut down harvests. difficult environment I think farmland shortage is the worst because Less farmland leads to less food. farmland shortage I think lack of technology is the worst because old farming wastes energy and makes it hard to get high crop yields. lack of technology What problems in 2a did they mention? sandstorms difficult environment farmland shortage lack of technology Listen to the conversation between George’s father and Li Rui’s grandfather. What problems in 2a did they mention? 2b George’s father Li Rui’s grandfather sandstorms difficult environment farmland shortage What action should be taken to solve these problems? Think and share 2c Listen again and fill in the table. How has the environment affected local lives? Past • There used to be ______________ all the time, and the __________were getting smaller and smaller. • Locals worked by _______________. Action • Locals found a bush. It had _______________ roots that could _____________ the soil together. • They began planting it in sandy ___________, with the government’s support. • They had _____________________ to help. Present • The corn fields are ________________. • They have planted many bushes and ________________ since then. • There are ___________ sandstorms now and the environment is getting _________. • It has improved local lives. sandstorms fields hand long hold areas machines bigger trees fewer better Bob: I’m amazed by how green your hometown has become! Grandpa: Have you seen the corn fields outside of the town yet? Bob: Yeah! They’re huge! Grandpa: There used to be sandstorms all the time, and the fields were getting smaller and smaller. Then, after one big sandstorm, we decided to do something. Bob: What did you do? Grandpa: We found a small bush. It had long roots that could hold the soil together. We began planting it in sandy areas. The government provided support too. Bob: Wasn’t it difficult to plant so many bushes? Grandpa: Yes, it was. At the beginning, we worked by hand. Later, we had machines to help. We have planted many bushes and trees since then. There are fewer sandstorms now and the environment is getting better. It has also improved our lives. Everyone has become richer and happier. Past Action present past present sandstorms fields were getting smaller worked by hand plant with machines corn fields action a small bush with long roots hold the soil together fewer sandstorms The environment is getting better It has also improved our lives. Everyone has become richer and happier. A: The area used to be covered with sand. B: What did they do to solve this problem? A: They planted bushes and trees. The land has become ... Discuss how the problems in 2b were solved. 2a everyone’s efforts + = government’s support A great project to solve the problem of desertification in China What else can we do to help solve this problem? Save paper to cut down tree cutting. 节约用纸，减少树木砍伐。 Plant small trees or saplings every spring. 每年春天栽种小树苗。 Tell friends the harm of desertification. 向身边朋友宣传荒漠化危害。 Collect used paper for recycling. 回收废旧纸张，践行资源再利用。 词组默写。 1. 带来;引起  _______________________ 2. 被……覆盖_______________________ 3. 过去常常做某事_______________________ 4. 不仅如此_______________________ 5. 到目前为止  _______________________ 6. 从那以后_______________________ 7. 固土，保持水土  _______________________ 8. 改善某人的生活_______________________ 9. 对…… 感到惊叹  _______________________ 10.决定做某事_______________________ 11. 手工，用人力  _______________________         12.很久，很长时间_______________________ bring about be covered with used to do sth not only...but also... so far since then hold the soil improve sb’s life be amazed at decide to do sth by hand for a long time 用括号内所给词的适当形式填空。 1.Great changes __________________ (take place) in Li Rui's hometown over the years. 2.Li Rui's father ___________________ (not visit) his hometown since 20 years ago. 3.In the past, it __________ (take) half a day to reach the town, but now it only takes an hour. 4.They used to __________ (travel) far to see a doctor, but now there is a new hospital in the town. 5.We began planting it in sandy areas. The government __________(provide) support too. have taken place hasn’t visited took travel provided Thank you! $