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1、.,Unit1,Unit 8 Focus on Global Warming,.,Pre-reading Activities - Audiovisual supplement 1,Audiovisual supplement,Cultural information,Watch the video and answer the following questions.,1. Where is the place in the video? 2. Is it possible that our planet will be like this in the future? Why?,The e
2、arth. But not the same earth where we are living now. In the video, there are rubbish and dust everywhere. And the city may have been abandoned, because there is nobody on the street but a robot.,Its quite possible. Human beings have caused too many troubles to the Earth: air and water pollution, en
3、ergy crisis, global warming, etc.,.,Pre-reading Activities - Audiovisual supplement 2,Audiovisual supplement,Cultural information,.,Video Script1,Audiovisual supplement,Cultural information,Singing:,Close your eyes and see it listen, Barnaby. Listen, Barnaby! Put on your Sunday clothes. Theres lots
4、of world out there. Get out the brilliantine and dime cigars. Were gonna find adventure in the evening air. Girls in white in a perfumed night where the lights are bright as the stars. Put on your Sunday clothes. Were gonna ride through town in one of those new horsedrawn open cars. Well see the sho
5、ws at Delmonicos. And well close the town in a whirl. And we wont come home until weve kissed a girl .,.,Cultural information 1,Audiovisual supplement,Cultural information,Global warming is the increase in the average temperature of Earths near-surface air and oceans since the mid-20th century and i
6、ts projected continuation. Most of the observed temperature increase since the middle of the 20th century was caused by increasing concentrations of greenhouse gases, which results from human activity such as fossil fuel burning and deforestation.,Global warming,.,Cultural information 2,Audiovisual
7、supplement,Cultural information,An increase in global temperature will cause sea levels to rise and will change the amount and pattern of precipitation, probably including expansion of subtropical deserts. Warming is expected to be the strongest in the Arctic and would be associated with continuing
8、retreat of glaciers, permafrost and sea ice. Other likely effects include changes in the frequency and intensity of extreme weather events, species extinctions, and changes in agricultural yields.,.,Global Reading - Text analysis,Structural analysis,Text analysis,1. From which perspectives does the
9、text address the issue of global warming?,The text addresses the issue from three perspectives the general public concern, its causes and consequences, and practical actions to tackle the problem.,.,Text analysis,Structural analysis,2. Whats the authors purpose of writing?,To raise peoples conscious
10、ness of the potential dangers of global warming, and to suggest some actions to combat it.,Global Reading - Text analysis,.,Structural analysis 1,The author tells the reason why people are now increasingly concerned about global warming.,The author traces the causes of global warming and discusses t
11、he consequences of it.,The author puts forward some suggestions on what is to be done.,1. Divide the text into parts by completing the table.,Text analysis,Structural analysis,.,Structural analysis 3,2. Figure out the sub-ideas in the second part.,1) the causes of the rising concentration of greenho
12、use gases in the atmosphere (Paragraphs 3 and 4) 2) the effect of such concentration on climate change (Paragraphs 5 and 6) 3) the potential threat of global warming to human health and survival (Paragraph 7),Main idea,Structural analysis,.,1 Twenty-five years ago if you made a trip to the local lib
13、rary and perused the periodical section for articles on global warming, youd probably have come up with only a few abstracts from hardcore science journals or maybe a blurb in some esoteric geopolitical magazine. As an Internet search on global warming now attests, the subject has become as rooted i
14、n our public consciousness as Madonna or microwave cooking.,Focus on Global Warming,Detailed reading1,Detailed reading,John Weier,.,2 Perhaps all this attention is deserved. With the possible exception of another world war, giant asteroid, or an incurable plague, global warming may be the single lar
15、gest threat to our planet. For decades human factories and cars have spewed billions of tons of greenhouse gases into the atmosphere, and the climate has begun to show some signs of warming. Many see this as a harbinger of what is to come. If we dont curb our greenhouse gas emissions, then low-lying
16、 nations could be awash in seawater, rain and drought patterns across the world could change, hurricanes could become more frequent, and El Ninos could become more intense.,Detailed reading2,Detailed reading,.,Detailed reading3,3 What has worried many people now is that over the past 250 years humans have been artificially raising the concentration of greenhouse gases in the atmosphere. Our factories, power plants, and cars burn coal and gasoline and spit out a see
