选修六第四单元读写课.ppt

肥城三中 刘影迪 Book4 Unit4 Writing Learning aims 1. To learn how to write and polish(润色) a question-solving composition(解决问题类作文) about the topic of unit 4. 2. To learn some writing skills by cooperation and self-learning. 3. To get interested in English writing. Polar bears are __________ of __________ due to the ice melting. at risk dying out Lakes are ___________ due to the drought. drying up People became homeless due to ______. floods Smog雾霾 There is no doubt that the smog in China is becoming heavier and heavier and that it is human activities that has caused this circumstance. So how has this come about? All scientists subscribe to the view that the smog is due to the burning of quantities of fossil fules like coal, natural gas and oil to produce energy, most of which have resulted in the increase of carbon dioxide.Greenhouse gases continue to build up and some individuals couldnt put up with it anymore. Even if we have become aware of the consequences of smog, few of us know how to deal with it. Also, there are someone advocating that economy should be developed in spite of the phenomenon. I am opposed to this opinion. All in all, so long as we take measures instantly, we can stop the trend keeping on. Questions: 1. What caused the smog? The smog is due to the burning of quantities of fossil fules. 2. Do you agree that the smog should be set aside? Why? 课文赏析： There is no doubt that the smog in China is becoming heavier and heavier and that it is human activities that has caused this circumstance. So how has this come about? All scientists subscribe to the view that the smog is due to the burning of quantities of fossil fules like coal, natural gas and oil to produce energy, most of which have resulted in the increase of carbondioxide.Greenhouse gases continue to build up and some individuals couldnt put up with it anymore. Even if we have become aware of the consequences of smog, few of us know how to deal with it. Also, ther