Unit 4The Earth Section4 Focusing on culture课件 2025-2026学年沪教版（2024）七年级英语上册

Unit 4 The Earth Key question Why should we learn about the Earth? Before you watch Where is Saihanba located? Have you ever been there? Do you know how large it is? Do you think it is beautiful now? Can you imagine what it used to look like? Prediction: What are likely to be mentioned in the video? the location of Saihanba £ the meaning of Saihanba £ the amount of tree cover £ the area of grassland £ the number and types of plants and animals there £ the disappearance of habitats £ people’s cutting down forests £ While you watch Task 1 Watch a video clip about Saihanba and match the numbers with the things you ticked. Task 2 Match the facts with the numbers. 1. the forest park a. nearly 1,000 2. grassland b. 80% 3. trees c. 94,000 hectares 4. plant species d. 15,000 hectares 5. animal species e. 70,000 hectares 6. forest coverage f. more than 600 7. a forest belt g. over 50 km long and 17 km wide While you watch Task 3 Watch the video again and answer the questions below. 1. What does the Mongolian word “Saihanba” mean? 2. Why have animals, such as the red deer, returned to Saihanba? 3. How does Saihanba help the environment now? It means “beautiful highland”. Thanks to the newly-planted forest, animals such as the red deer have returned to Saihanba. The forest now protects the plain from sand and dust storms and also stops the flow of cold, dry air from the north. After you watch Group discussion Why did Saihanba change so much? What can we do to protect forests? Saihanba: turning desert into forest 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. 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. In 1962, 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°C. 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. Task 1 Skim the article on page 62 and complete the notes below. Hundreds of years ago: The emperors went to Saihanba ______________. In the 1800s: Saihanba slowly turned into _____________. In the early ________ : A group of scientists travelled there—they wanted to stop the terrible ______________ in Beijing. In 1962: The first tree planters arrived, and they started planting trees there. Today: Saihanba is _____________. to hunt a desert sandstorms 1960s green again Task 2 Summarize the main idea of each paragraph with subheadings and key words. Para. 1: __________________ Para. 2: __________________ Para. 3: __________________ History and problems Actions and challenges Efforts and achievements Task 3 Think and answer 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? There were forest fires and wars, and people cut down many trees. Saihanba slowly turned into a desert. Because the cold and dry weather made it very difficult, and strong winds blew away many young trees. The forest helps provide the capital with clean water, and there are fewer sandstorms in the Beijing area now. Achievements Task 4 Interview （Group Work） Imagine you are a reporter for the school newspaper. At the moment you are working on an article about the Saihanba Spirit. You are going to interview some people about their experiences in Saihanba. Roles: S1: news reporter S2: director of the forest farm S3: early pioneer S4: director of the research institute Self-assessment 评价 内容 1. 我能理解塞罕坝的相关背景知识。 1 2 3 4 5 2. 我能理解塞罕坝改造过程中遇到的困难。 1 2 3 4 5 3. 我能理解塞罕坝改造成功后是如何改善环境的。 1 2 3 4 5 4. 我能学习塞罕坝精神，愿意力所能及地保护环境。 1 2 3 4 5 Homework 基础作业 1. 完成课本第63页的词汇练习。 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。 emperor /'empRrR(r)/ n. 皇帝 The emperor was the most powerful man in the country. hunt /hVnt/ v. 打猎 Lions sometimes hunt alone. war /wO:(r)/ n. 战争 My grandfather fought in the war. sandstorm /'sændstO:m/ n. 沙暴 In the next few days there will be a sandstorm. solution /sR'lu:Sn/ n. 解决办法 We need to find a solution to the problem. blow /blRW/ v. 刮；吹 It gets very cold when the wind blows from the north. blow away 吹走 The cold winds blew away the leaves. generation /0dZenR'reISn/ n.（统称）一代人 We want to protect the Earth for future generations to enjoy. hundreds of 数以百计 There are hundreds of different types of insects there. 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