人教版选修_unit_4_global_warming.ppt

1. consume energy 2. greenhouse 3. greenhouse gases 4. the greenhouse effect 5. degree Fahrenheit 6. degree Celsius 7. atmosphere 8. fossil fuel 9. carbon dioxide 10. renewable source 11. non-renewable source 12. Natural resources 消耗能源 温室 温室气体 温室效应 华氏度 摄氏度 大气层 化石燃料 二氧化碳 可再生资源 不可再生资源 天然资源 We depend on energy to do many things in our daily lives. Make a list of the things that consume energy in your home, school or any other places. Where does the energy come from? Now that we have learned some sources of energy are non-renewable, What should we do with energy ? --- We should save energy and thus reduce the emission (排放) of greenhouse gases. What … greenhouse gases do? The Earth is Becoming Warmer --But Does It Matter? First reading for general idea : Where can we read such an article? 2. Who wrote the magazine article? What is the name of the magazine? 3. What is the main topic of the article? 5. What may be the positive aspects of global warming? Plants grow quicker; Crops will produce more; Encourage a great range of animals; Make life for human beings better. What skills are used in the four parts? Language points: (Some phrases in warming up:) 消耗能量 能源 用完,耗尽 吸收太阳的热量 阻止….不被…. 温室气体 Language points:(Some phrases in Passage 1:) 产生 探究这些问题 一种无规律的自然现象 赞同这种观点 化石燃料 少量气体 大量的 额外的二氧化碳 趋向，有...的倾向 10. 作精确的统计 11. 导致 一场大灾难 干旱/饥荒 反对这观点 对环境的影响 更多种类的动物 17. 持续转暖 10. make accurate measurements 11. result in 12. a catastrophe 13. severe droughts/famines 14. be opposed to this view 15. environmental consequences 16. A greater range of animals 17. Keep on warming Reading: It doesn’t matter. = It is not important. It matters if I miss this bus . I will be late for school. What does it matter? 那有什么关系? 2. 对你我来说无所谓 That does not seem much to you or me. The man seemed to be ill. = It seemed that the man was ill. There doesn’t seem to be much hope. =It seems that we don’t have much hope. 3. …when compared to other natural changes.