新人教选修6 Unit4 Global warmingReading阅读课件

1、Words study,Global warming,Unit 4,Words and expressions of Unit 4,1.Compared to the past few years, whats the weather like this year ? 2.Do you want to check it out? Here are some pictures based on the actual life scenes in these years for you to refer to.,Questions,In addition ,you may turn to Grap

2、h 1. on Page 26 to find out the changes of the temperatures from long-term average.,Conclusion: The whole world is becoming warmer and warmer.,But does it matter? This is the topic today.,Unit4 Global Warming Reading The Earth Is Becoming Warmer But Does It Matter?,Fast Reading,Glance quickly at the

3、 magazine article and answer the questions.,Sophie Armstrong wrote the magazine article. The name of the magazine is “Earth care”.,1.Who wrote the magazine article? 2.What is the name of the magazine?,What is the writing style? A.Expositive (说明文) B. Practical (应用文） C. Argumentative(议论文） D. Narrative

4、（记叙文）,Careful Reading,1.Read the text again and try to get the main idea of the article.,Match the parts with the main ideas:,Explain how global warming comes about.,List two different attitudes among scientists towards global warming.,Introduce the topic of global warming.,Its up to readers to thin

5、k and decide whether people should do something about global warming or not.,Part I,Part 2,Part 4,Part 3,Questions,How has the global warming come about?,Human activity- burning of fossil fuels., Greenhouse effect- greenhouse gases- we need those gases.,Greenhouse gases!,Whats greenhouse gases effec

6、t?,Greenhouse gases trap the heat of the sun and keep the air surrounding the earth warm. It is called the greenhouse effect., We add huge quantities of extra carbon dioxide to the atmosphere by burning Fossil fuels. The carbon dioxide in the atmosphere went up from around 315 parts per million to a

7、round 370 parts per million from 1957 to 1997 (See Graph 2 on Page 26 ),The two different viewpoints towards the effects of global warming between Dr. Janice Foster and George Hambley,go up,catastrophe,very serious,positive,produce,a greater range of animals,Of the two ideas, which are you in favor

8、of ?,The Dr Janice Fosters.,Why ?,Because we have witnessed a large number of disasters predicted by some people.,What are the effects and disasters of global warming?,Whats worse ,the glaciers(冰川） of the South Pole are beginning to crack（破裂）,The glaciers of the Poles are starting to melt due to the

9、 increasing temperatures caused by global warming.,tsunami,The sea level to rise.,tornados,Severe storms,droughts,famines,the spread of diseases,The disappearance of species,Dicussion,What should we do about the terrible effects above?,.,.,Try to reduce the use of motor vehicles,electric vehicle,bik

10、e,running,Solar energy car,Planting trees,Cleaning the rubbish,疑难句破解并背诵下列句子。,There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon. 毫无疑问，地球是在变暖，而地球变暖正是人类活动导致而成的，并非是一种无规律的自然现象。,Some byproducts

11、of this process are “greenhouse” gases, the most important one of which is, carbon dioxide. 这个升温过程的一些副产品就叫作“温室”气体，其中最重要的就是二氧化碳。,It means that more heat energy to be trapped in the atmosphere causing the global temperature to go up. 这就意味着更多的热量被困在大气层中， 从而引起全球温度上升。,Even if we start reducing the amount of carbon dioxide and greenhouse gases, the climate is going to keep on warming for decades or centuries. 即使我们开始减少二氧化碳和温室气体的含量， 在未来几十年或几个世纪内，气候仍会持续转暖。,Return the green world to us,Assignment,1. Write an argumentation titled “Environment Protection ”base