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课件网) Unit 2 Saving the Earth Topic 2 All these problems are very serious. sandstorm How does the sandstorm come into being wash the earth away many trees change into desert forests gone sandstorms come into being cut down trees 3. Number the pictures about how sandstorms come into being. 4 1 5 3 6 2 Once, there were many trees in the forests. But people started to cut down trees. soon, the forests were gone. Without trees, wind and rain began to wash the earth away. As a result, a lot of rich land has changed into desert. Now, when the wind blows, sandstorms come into being. There were fewer trees left, so the wind always blows the earth away. People have cut down such a large number of trees that the land has changed into desert. Task 1 Listening for gist The boy and girls are talking about _____. A. different types of sandstorms B. the reasons for sandstorms C. sandstorms in different cities Task 2 Listening for details facts The wind outside is blowing _____. Kangkang saw _____ in sandstorms. cause _____ cut down too many trees result A lot of _____ land has changed into desert. solution Built “ The _____ Great Wall” strongly nothing People rich Green Task 3 Listening for detailed comprehension Trees can stop the _____ from blowing the earth away. Trees can stop the _____ from washing the earth away. A lot of water can be saved by _____. wind forests water (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. 肥沃的土地 刮得猛烈 cut down 砍伐，缩减 结果是 change… into= turn… into 把…变成 stop/ prevent/ keep… from doing sth. 阻止…做某事 blow away 吹/刮走 树木可以防风固土。 它们还能防止水土流失。 森林可以储存大量的水分。 人类 绿色长城 好大的凤啊！ Task 4 Post-listening: Listen and fill in the blanks. 1. Now some kinds of animals are becoming _____ _____ _____. 2. Some animals are____ _____ ____dying out completely. 3. In the past, pandas lived a quiet life and had _____ ____ food. 4. Humans have _____ ___ _____ the importance of protecting animals. 5. We should ____ ____ ____ to protect them. in danger of plenty of come to understand do our best fewer and fewer be in danger of doing sth. 处于做某事的危险中 die out ... ...
