高二英语选修6第四单元课件.ppt

Summary Skim over the passage, and tell what you have learnt in class. Try to talk in general terms rather than in details. eg: I learnt that the earth is becoming warmer. I learnt that global warming could have terrible effects on the environment. …. Debate A B A : We shall do something about global warming. B: We shall do nothing about global warming. Assignment Read the passage again and review the new words and expressions. Prepare the debate in groups. Surf the internet for more information about global warming. …it is a rapid increase when compared to other natural changes. compare A to B compare A with B ：把A比作B，一般要有相似之处，显示某人或某物与他人或他物相同。 ：把A和B进行比较 eg: 我们常把儿童比作花朵。 eg: 如果你把这本字典和那本比较一下，你就会发现许多不同之处。 We often compare children to flowers. If you compare this dictionary with that one, you’ll find many differences. Language points for Reading I 2.So how has this come about and does it matter? come about : 发生，造成 相当于happen eg:你能告诉我事情是怎么发生的吗？ eg:随着电的使用，种种大变化发生了。 Can you tell me how the accident came about？ With the use of electricity, great changes have come about. come out come up 出现；（消息）传开；（观点）公开 发生、举行；（在空中）出现 3. random adj n. Adj. 随意的，任意的 eg: The information is processed in a random order. 这些信息是随机处理的。 n. at random 随意地 eg:我随意点了个人。 I called one at radom. 金太阳新课标资源网 Unit 4 Global warmingPeriod 172 Warming up and reading 1课件（人教课标选修6 ） Unit 4 Global Warming Work in groups ---list things as required : 1. Things that use energy around us or at any other places,( ie. light) 2.Sources of energy (ie. coal) Warming up – I ( ３m ) Things that use energy around us or at any other places: In a house Things that use energy Sources of energy lights television cassette player computer fridge stove washing machine hairdryer video recorder coal oil natural gas wind(power) sun(solar energy) water(hydro-electric power) the sea ( tidal energy) uranium(nuclear energy) plant waster(biomass energy) Windmills, renewable. Wha