九年级英语湘教版上_unit_2 topic2 对话教学 课件

Unit 2 Saving the Earth Topic 2 All these problems are very serious 3rd Period Talking As students, what should/shouldnt we do? save water As students, what should/shouldnt we do? spit As students, what should/shouldnt we do? care for wild animals As students, what should/shouldnt we do? 不要踩踏草地和摘花 walk on the grass & pick flowers As students, what should/shouldnt we do? 不要乱扔 垃圾 leave rubbish here and there good behavior rude behavior Read 1a and answer the following questions. 1.1. What are they talking about?What are they talking about? 2. Why is air pollution a serious problem in China?2. Why is air pollution a serious problem in China? 3. What should students do and not do to protect3. What should students do and not do to protect the environment? the environment? 4. Can you give some advice to the government?4. Can you give some advice to the government? They are talking about air pollution and envionment protection. Because China has become the worlds largest producer and user of coal. We shouldnt leave rubbish here and there. Dont spit anywhere in public. Dont walk on grass or pick flowers. Everyone should care for wild animals and plant more trees. A. Listen to the tape and circle the phrases you hear. become weakerdestroy the environment disappear rapidlyon this earth enough bamboo to eat B. Listen again and fill in the blanks. 1. Now some kinds of animals are becoming _ _ _. 2. Some animals are _ _of dying out completely. 3. In the past, pandas lived a quiet life and had _ _food. 4. Humans have come to_ the importance of protecting animals. 5. We should _ _ _to protect them. do our best in danger plenty of realize fewer and fewer Useful expressionsUseful expressions It says that China has become the worlds largest producer and user of coal. As a result But the government is doing something useful to protect the environment. Everyone should care for wild animals and plant more trees. We should do everything we can to protect the environment. What can trees do for us? Our life Our environment What will our world be like without trees? What will our world be like without trees? sandstorm desert human beings What should we do ? We should stop from cutting down trees. We should prevent people from cutting down trees. Listen to 1a, answer the questions. What are they talking about? What causes this kind of bad weather? They are talking about sandstorms. People have cut down too many trees. A lot of rich land has changed into desert. Read 1a, answer the question. What are trees functions? Trees can stop the wind from blowing the earth away. A lot of water can be saved by forests. Trees can also prevent the water from washing the earth away. A. B. C. Look at the picture, describe them using the words given. wash the earth away Look at the picture, describe them using the words given. many trees Look at the picture, describe them using the words given. change into desert Look at the picture, describe them using the words given. forests gone Look at the picture, describe them using the words given. sandstorms come into being Look at the pictures, describe them using the words given. cut down trees Number the pictures and then talk about them in groups. ( )( )( )( )( )( ) ( )( )( )( ) ( )( ) Do you know how sandstorms come into being? 415 36 2 Trees are very useful to us. They can help us p_ the wind from blowing the earth away and stop the s_ from moving towards the rich land. Trees also s_ water from running away. They can keep a great d_ of water. So we must stop people from c_ down too many trees. Otherwise a lot of rich land will change into d_, l_ only sand. We must get rid of (摆脱) this kind of bad b_. 根据句意及首字母提示完成句子。根据句意及首字母提示完成句子。 revent and ave eal utting esert eaving ehavior Trees are important to us, what can we do to protect them? We should prevent people from Protecting and Saving Water Water is very important to human beings, but not everybody knows how to protect and save it. Here are some ways: 1. Pass laws against water pollution. 2. Stop factories pouring waste water into rivers. 3. Remember to turn the tap off when you leave. 4. Collect and reuse waste water. . Read and discuss different ways of protecting and saving water. Useful expressionsUseful expressions The wind is blowing strongly with lots of sand. People have cut down too many trees. A lot of rich land has changed into desert. And a lot of water can be save