人教高中英语选修六 Unit 4 Global warming Reading 阅读课1 课件共

1、Words study,Unit 4 Reading,THE EARTH IS BECOMING,WARMER,BUT DOES IT MATTER,Skim the article,1,Who,wrote,the magazine article,What is the,name,of the,magazine,2. What are the,names,of,the three scientists,mentioned in the text,3. What are the,two graphs,about,4. What is the main topic of the article,

2、Sophie Armstrong, Earth Care,1.Who wrote the magazine article? What,is the name of the magazine,G,lance and,A,nswer,Dr Janice Foster,Charles Keeling,George Hambley,2. What are the names of the three scientists,mentioned in the article,G,lance and,A,nswer,3. Read graphs,X-axis,Y-axis,Temperature,diff

3、erence,What information,can you get,curve,The earth is becoming warmer,3.Read graphs,What information can you get,The carbon dioxide in,the atmosphere went up,4. What is the main topic of the article,Global warming/ the warming of the earth,Read para2 and para3,1. What has caused the global warming,

4、2. What view do all the scientists hold,3. What is greenhouse effect,Human activity, rather than a random but natural,phenomenon,The increase in the earths temperature is due to the burning of,fossil fuels,Small amounts of gases in the atmosphere trap heat from th,sun and therefore warm the earth,Th

5、ere is a natural phenomenon that scientists call the,greenhouse effect. This is when small amounts of gases in,the atmosphere, like carbon dioxide, methane and water,vapour, trap heat from the sun and therefore warm the earth,Without the greenhouse effect, the earth would be about,thirty-three degre

6、es Celsius cooler than it is. So, we need,those gases. The problem begins when we add huge,quantities of extra carbon dioxide into the atmosphere. It,means that more heat energy tends to be trapped in the,atmosphere causing the global temperature to go up.,Janice Fosters,quote,Why does the writer us

7、e the quote,To attract the readers attention,To make readers interested in the whole article,However, the attitudes of scientists towards this rise are,completely different,On the one hand, Dr Foster thinks that any,trend in which the temperature increases by 5 degrees would,lead to a catastrophe. S

8、he says, “We cant predict the climate,well enough to know what to expect, but it could be very,serious.” Others who agree with her think there may be a rise of,several meters in the sea level, or predict severe storms, floods,droughts, famines, the spread of diseases and the,disappearance of species

9、. On the other hand, there are those,like George Hambley, who are opposed to this view and believe,that we should not worry about high levels of carbon dioxide in,the air. They predict that any warming will be mild with few bad,environmental consequences. In fact, Hambley states,The topic sentence,O

10、n the one hand,Dr Foster thinks that any trend in which the,temperature increases by 5 degrees would lead to a catastrophe,She says, “We cant predict the climate well enough to know what to,expect, but it could be very serious.” Others who agree with her,think there may be a rise of several meters i

11、n the sea level, or,predict severe storms, floods, droughts, famines, the spread of,diseases and the disappearance of species,On the other hand,there are those, like George Hambley, who are opposed to this view,and believe that we should not worry about high levels of carbon,dioxide in the air,They

12、predict that any warming will be mild with few bad,environmental consequences. In fact, Hambley states, “More carbon dioxide is,actually a positive thing. It will make” plants grow quicker; crops will produce,more; it will encourage a greater range of animals,all of which will make life,for human be

13、ings better.,How does the writer develop the paragraph,By making contrast and comparison,1. On the one hand,Dr Foster,thinks that any trend,in which the temperature increases by 5 degrees,would lead to a catastrophe,2. She says, “We cant predict the climate well,enough to know what to expect, but it

14、 could be very,serious.,3. Others who agree with her think there may be a,rise of several meters in the sea level, or predict,severe storms, floods, droughts, famines, the spread,of diseases and the disappearance of species,Catastrophe,a rise in the sea level,severe storms, floods, droughts,famines,

15、the spread of diseases,disappearance of species,Janice Foster,1)On the other hand, there are those, like George Hambley,who are opposed to this view and believe that we should,not worry about high levels of carbon dioxide in the air,2) They predict that any warming will be mild with few bad,environm

16、ental consequences,3) In fact, Hambley states, “More carbon dioxide is actually,a positive thing,4) It will make plants grow quicker; crops will produce more,it will encourage a greater range of animals,all of which,will make life for human beings better.,A positive,thing,plants grow quicker,crops w

17、ill produce more,encourage a greater range of,animals,make life for human beings,better,George Hambley,Whats the writers attitude towards the ris,of the temperature,1. Greenhouse gases continue to,build up,in the,atmosphere,2. Even if we start reducing the amount of carbon,dioxide and other greenhou

18、se gases, the climate is going,to keep on warming for decades or centuries,3. No one knows the effects of global warming,Does that mean we should do nothing? Or,are the risks too great,The author probably holds the view that _,A. Actually global warming is good for us,B. We should do nothing about t

19、he global,warming,C. Catastrophe will happen if the globe keeps on,warming,D. A lot remains to be found out about the effects of,global warming,D,uncertain,Does it really mean we should do nothing,What should we do to prevent global,warming,Governments,are supposed to,take,effective measures,Common people,are supposed,to,live a low-carbon life,Ask people to,be aware of,the importance of,environmental protection by means of newspaper,magazines and TV,Enlarge investment on,pub