Unit4 Saihanba turing desert into forest课件-2024-2025学年沪教牛津版英语七年级下册

Unit 4 The Earth （Focusing on culture） Have you been to Saihanba? What do you know about it? an emerald(翡翠) of North China a national AAAA Scenic Area one of the most important national nature reserves (自然保护区) 6 1. Where is Saihanba located? 2. When did the first tree planters go there? 3. How long did it take to turn the desert into forest? Watch a video of Saihanba and answer the questions. 6 1. Where is Saihanba located? 2. When did the first tree planters go there? 3. How long did it take to turn the desert into forest? 6 1. Where is Saihanba located? 2. When did the first tree planters go there? 3. How long did it take to turn the desert into forest? It is located in the northern part of Hebei Province. In 1962. 60 years. 6 In fact, Saihanba has experienced a lot of changes. Do you know its history? before 1800s 1800s-1960s now Now let’s read an article and find the answer. 6 Task 1:Turn to p62, listen to the MP3 and read after it. 1 2 3 6 Task 2: Scan the passage on page 62 and fill in the missing information. Pay attention to the time and events. the world's biggest man-made forest in the 1800s for hundreds of years in 1962 in the early 1960s today three generations emperors hunted there It is green again worked hard the first tree planters arrived slowly turned into a desert scientists tried to find a solution 1 2 3 4 5 6 6 Task 3: Summarize the main idea of each paragraph with key words or phrases. 1 2 3 para 1:________________ para 2:________________ para 3:________________ History and problems Actions and challenges 挑战 Efforts and achievements 努力 成就 6 Task 4: Answer the questions below with the information from the article on page 62. (p63 exercise 2 ) 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? 6 How did Saihanba become a desert? There were forest fires and wars, and people cut down many trees. Saihanba slowly turned into a desert. 1 2 3 6 1 2 3 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. 6 1 2 3 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. 6 Task 5: Try to tell the changes of Saihanba according to the given information. before 1800s 1800s-1960s 1960s-now forest fires, wars, cut down, trees tree planters, generation, planted trees, hard work Effect on Beijing area provide, clean water, sandstorms, fewer 6 Pay attention to the key expressions. 在……的北部 开始做某事 砍倒 变成 一群…… 旅行至…… 植树 到达 吹走 多亏了 为……提供…… 在……的中部 人造森林 数亿的…… 6 Task 6: Complete the sentences with the words and phrase below. Change the form if necessary. (P63 exercise 3) blow away generation hunt sandstorm solution (1) The family lived in the village for five ___________ before they moved to Beijing. (2) This is a difficult problem, but I am sure we can find a __________. (3) The strong wind _____________ her hat, and it landed in the lake. (4) ____________ are very common in the Sahara Desert. (5) Killer whales usually _____ seals and sea lions for food. generations solution blew away Sandstorms hunt adj. 常见的 6 P63 Discuss the questions below. ... ... Your ideas (1) Why are forests important? (2) What can we do to protect them? 6 P63 (1) Why are forests important? They provide homes for many plants and animals. They help keep the air clean by taking in carbon dioxide. They provide people for things like wood, food, and places to relax. … 6 P63 (2) What can we do to protect them? Reduce deforestation(森林砍伐) Plant new trees. Recycle paper. … 6 Lucid water and lush mountains are invaluable assets. 绿水青山就是金山银山！ Small actions can be valuable for the Earth ! Let’s save the Earth ! 6 Lavf58.29.100 Packed by Bilibili XCoder v2.0.2 EVCapture4.2.2软件录制 null 167740.8 $$