(
课件网) 九年级上册 Unit 2 Saving the earth 2. All these problems are very serious. Section D 英 语 仁爱版 仁爱版 英语 九年级上册 Warming up—Pre-listening—While-listening—Post-listening— Exercises —Summary Knowledge aims 1. Learn and master some new words and useful expressions; 2. Talk about the importance of forests; 3. Review Compound Sentence(并列句），pay attention to and、or、but and while. Moral aims Learn more knowledge about the environmental protection and try to be a greener person. water pollution Imagine you are water. Please tell us your functions, problems and wishes. I’m water. I used to be … Factories usually pour … I wish human beings … What are the three R’s Which means “make something less or smaller” What should we reduce Which means “use it again” What should we reuse What should we do about recycling Reduce, reuse and recycle. Reduce. We should reduce the things which people can use only once. Reuse. We should reuse plastic bags. We should collect waste paper or soft drink cans, and sort them so that they can be recycled. Can you answer them Throw the rubbish here and there. Don’t spit in a public place. Draw a beautiful picture on the public walls. Don’t throw things away if they can be reused. Go to school by bike instead of by bus. Collect the rubbish and try to sort it. Pour dirty water into rivers directly. Turn off the lights when you go out. Which one is right Read the passage and put the following paragraphs in the correct order. ( ) The sea seems to have the best answer. There is plenty of water in the sea. But we need to take the salt away from the sea water. This is very expensive. If scientists can find cheaper ways to do it, we can solve the problem of the shortage of water. ( ) How can we avoid a serious water shortage First, we should save water and not waste it. Second, we should protect our water resources and not pollute them. Third, we should discover ways to reuse water. Scientists have made some progress in this field. Today, some large cities are reusing their water. But people’s need for water is increasing day by day. We still don’t have enough water. What else can we do ( ) Although the world is hungry, it is even thirstier. While nearly of the earth is covered with water, we are still short of drinking water. This is because about 97% of the water on the earth is sea water. So we can’t use it for watering plants or drinking directly. Humans can only drink and use fresh water from places including rivers, lakes and underground. 11 22 33 While-listening 1.Why is our world thirsty when of the earth is covered with water 2. What can we do now to avoid the water shortage Because about 97% of the water on the earth is sea water, we can’t use it for watering plants or drinking directly. First, we should save water and not waste it. Second, we should protect our water resources and not pollute them. Third, we should discover ways t ... ...
