Unit 4 The Earth Section 4 Extending and developing competencies课件 2025-2026学年沪教版（2024）七年级英语上册

该初中英语课件围绕“塞罕坝从沙漠到森林的生态改造”展开，通过“保护地球的挑战与成就”提问导入，以位置、大小等问题搭建认知支架，结合时间顺序梳理任务，帮助学生理解其历史、挑战与成果。 其亮点在于融合文化意识与思维品质，借塞罕坝精神（坚守使命、艰苦奋斗、绿色发展）培育家国情怀，以时间链分析和问题探究提升逻辑思维。采用任务型教学（小组扫描、采访制报），兼顾语言能力（复述、写作）与学习能力（资料查找），学生能深化环保意识，教师可借结构化任务提高教学效率。

Unit 4 The Earth Section4 Extending and developing competencies Focusing on culture Lead in What challenges do they face? What achievements have they made? Many people have worked hard to protect our beautiful planet. Saihanba:turning desert into forest. 美丽的高岭 拓展视野和发展素养 学习目标 1.了解塞罕坝是如何从沙漠变成森林的。 2.了解塞罕坝改造过程中遇到的困难和最终的成果。 3.能学习塞罕坝精神，愿意力所能及地保护环境。 重点 难点 Think： Where is Saihanba located? Do you know how large it is? Do you think it is beautiful now? Can you imagine what it used to be like? Before you watch Think： Where is Saihanba located? Do you know how large it is? Do you think it is beautiful now? Can you imagine what it used to be like? It is in the north of Hubei. It is about 94,000 hectares(公顷）. How did Saihanba turn desert into forest? Task 1 Scan the passage on page 62 and fill in the missing information. Pay attention to the time and events. time order(时间顺序） Think What can we do to protect the earth? Group work Task 2 Read the passage carefully,then think and answer the questions below. How did Saihanba become a desert? 2. Why was it difficult to turn the desert into a forest? 3. How does the forest improve the environment in the Beijing area? Group work Saihanba is a forest park in the north of Hebei. It is about 400 km from Beijing.For hundreds of years, the emperors went there to hunt. But in the 1800s, things began to change.There were forest fires and wars,and people cut down many trees.Saihanba slowly turned into a desert. How did Saihanba become a desert? There were forest fires and wars, and people cut down many trees. Saihanba slowly turned into a desert. Main idea:History and problems Paragraph 1 When the forest disappeared, there were terrible sandstorms in the Beijing area. In the early 1960s, a group of scientists travelled to Saihanba to find a solution. They found an old tree in the middle of the desert. "Maybe we can still plant trees here," they thought. In1962, the first tree planters arrived in Saihanba.The cold and dry weather made their work very difficult, and strong winds blew away many young trees. In winter, it got as cold as -40℃. 2. Why was it difficult to turn the desert into a forest? Because the cold and dry weather made it very difficult, and strong winds blew away many young trees. Main idea: Actions and challenges Paragraph 2 Three generations of forest workers continued the hard work.Thanks to them, Saihanba is green again. It is today the world's biggest man-made forest. There are hundreds of millions of trees there. The forest helps provide the capital with clean water,and there are fewer sandstorms in the Beijing area now. Paragraph 2 3. How does the forest improve the environment in the Beijing area? The forest helps provide the capital with clean water, and there are fewer sandstorms in the Beijing area now. Main idea: Efforts and achievements Achievements Summary History and problems Actions and challenges Efforts and achievements Saihanba Spirits ? Saihanba Spirits Stay true to the mission. Hard work. Green development. Homework 基础作业 1. 完成课本p.63上的词汇练习。 2. 复述塞罕坝改造成功的故事。 拓展阅读 1. 将Task 4的采访任务制作一张报纸，需包括人物介绍、事迹介绍、人物引言等。 2. 上网查找资料或者观看电影，了解更多关于塞罕坝的报道。 Lavf58.45.100 $