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 ________