Unit4_Global_warming课件44新人教版选修6).ppt

Unit4_Global_warming课件44新人教版选修6).ppt

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Unit4_Global_warming课件44新人教版选修6).ppt

选修 6  ;Part A.模仿朗读;2.什么是二氧化碳? ___________________________________________ 3.全球气温上升的原因是什么? ____________________________________________ 4.科学家们对全球变暖的后果意见一致吗? _____________________________________________ 5.有没有人确切知道全球变暖的后果? ___________________________________________;答案; 1.Q:What are the “greenhouse gases”? A:Greenhouse gases are byproducts of burning fossil fuels. 2.Q:What is carbon dioxide? A:Carbon dioxide is a gas produced when we burn fossil fuels. It is the most important gas of the greenhouse gases. 3.Q:What is the cause of global warming? A:Human beings burn more and more fossil fuels,which produces more and more carbon dioxide. When too much carbon dioxide is added into the atmosphere,more heat is trapped,;答案: causing the global temperature to go up. In a word,it is human activities that have caused global warming. 4.Q:Do the scientists hold the same opinion about the consequences of global warming? A:No. Some think global warming would be a catastrophe while others think it is a good thing. 5.Q:Does anyone know the accurate effect of global warming? A:No. No one knows the effect of global warming.;Part C.故事复述;Ⅰ.写出下列必考单词 1.外部的adj.______________ 2.提倡,拥护,主张v.______________ 3.种类,范围n.______________ 4.图表n.______________ 5.普遍的,分布广的adj.______________ 6.平均的adj.______________ 7.环境,情况n.______________;8.发动机n._______ 9.承诺,信奉,交托n._______ 10.燃料n._______ 11.温室,花房n._____ 12.资料,数据n.______ 13.大灾难 n.______ 14.核的,原子核的adj._____;Ⅱ.写出下列单词的变化形式 1.消费,消耗v.________;消费者n.________ 2.新鲜的adj.________;使振作v.________ 3.趋向,照顾vi. n. ________;倾向,趋势n.________ 4.平稳的,稳固的adj.________;平稳地,稳固地adv.____________ 5.生存,存在v.________;生存,存在 n.________ 6.电的,与电有关的adj.________;电 n.________;  电的,用电操作的adj.________;7.现象n.________;(复数)n.________ 8.新的adj.________;重新开始,修订,使继续有效 v.____________; 能再生的adj.________ 9.结果,后果,影响 n.________;随之发生的,由此引起的adj.________;◆ 活学活用 用所给单词的适当形式完成句子 1.Many people do not believe the ________ of the ghosts. but some young children doubt that there ________

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