选修6unit4Reading(2).ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 4,Global warming,Reading,1.Have you ever seen a greenhouse?,is made of,glass,used for,growing plants,especially during cold weather.,2.How does the greenhouse work?,The air inside was warm because the,glass,traps,(,挡住,吸收,),the heat from the,sun and,keeps it from escaping,(,逃跑,).,This makes the greenhouse,heat,up,(,热量,上升,),and so the plants can grow,Throughout,(,在,期间,),the cold period.,3.What are Greenhouse,Gases?,Methane,4,Ozone,5,1,Carbon dioxide,2,Water vapor,1,1,Nitrous oxide,3,4.Greenhouse Effect,Global warming,Greenhouse gases trapped the,heat from the sun,which causes the temperature of earth goes up.,Greenhouse,effect,Green house effect,Greenhouse,Global warming,Are they all beneficial?,？,THE EARTH IS BECOMING WARMER BUT DOES IT MATTER?,Reading,1)How many paragraphs does the reading,2)Make a division of the text.,Read the passage quickly(3),text consist of?Please number them.,Fast-Reading,Main ideas of each part:,Part1,(1),Introduce a debate over the issue of global warming.,raising a,question,Part2,(2-5),How global warming,comes about.,giving,examples,using graphs,explanation,Part3,(6),List two different attitudes,among scientists towards,global warming.,Part3,(7),Its up to readers to think and,decide whether people should,do something about global,warming or not.,giving examples,making contrast,leaving a question,Are the risks too great?,So can you predict the future of the,global warming?,Who writes this article?,Sophie Armstrong of,Earth Care,What rose about,one degree Fahrenheit?,The temperature of the earth.,Careful reading,Part1,(1),Introduction of global warming.,2._,1._,Part2,(2-5),How,global warming comes about?,the burning of fossil fuels,human activity,Carbon,dioxide,Methane,What are the,Greenhouse,gases?,1.,2.,3.,Water,vapor,Part3,(6-7),What are the effects of global warming?,a rise in the sea level,Severe storms,droughts,famines,the spread of diseases,and the,disappearance of species,Make plants grow faster,effects,Read and answer the questions.,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 article?,1.Sophie Armstrong,Earth Care.,2.Dr Janice Foster,Charles Keeling,George Hambley.,3.What do the three scientists think about,global warming?,believes it is the burning of more,and more fossil fuels that is resulting,in a big increase in carbon dioxide.,Dr.Janice Foster,George,Hambley,Charles,Keeling,thinks the effects of global,warming could be very serious,(,严重的,).,thinks,global,warming,will be,mild with few bad environmental,consequences.,The different ideas between Dr.Janice Foster&George Hambley,Dr.Janice Foster,George Hambley,Carbon dioxide has caused the global temperature to _.An increase of five degrees would be a _ and could be _.,More carbon dioxide is a _ thing,which makes crops _ more and will encourage _.,go,up,catastrophe,very,serious,positive,produce,a greater range of animals,4.What are the two graphs about?,The first graph shows,the temperature,increase of one degree Fahrenheit between,1860 to 2000.,The second graph shows,the carbon dioxide,content in the atmosphere from 1957 to 1997.,from around 315 parts per million,to around 370 parts per million,Huge quantities of extra carbon dioxide,From 1957 to 1997,5.What is the main topic of the article?,Global warming/the warming of the earth.,1.Who found out the amount of carbon,dioxide in the atmosphere from 1957,to 1977?,A.Dr.Janice Foster.,B.Charles Keeling.,C.George Hambley.,D.Sophie Armstrong.,B,Choose the best answer.,2.Which of the following is Dr Janice Fosters,opinion?,A.The result of the temperature increase,will be serious.,B.The amount of warming is nothing serious.,C.We neednt worry about high levels of,carbon dioxide.,D.Global warming is a natural phenomenon.,A,3.Which of the following is TRUE according,to the text?,A.The temperature of the earth increased,about one degree Fahrenheit during the,20th century.,B.The carbon dioxide content in the air,increased by 70 parts per million from,1957 to 1997.,C.All scientists accept the data in graph 2,except Charles Keeling.,D.Janice Foster says that more carbon,dioxide will make plants grow faster.,A,4.The author probably agrees that _A.actually global warming is good for man.B.we should do nothing about the global,warming.C.catastrophes will happen if the globe,keeps on warming.D.a lot remains to be found out about the,effects of global warming.,D,True or false?,1.The temperature in the last century did not seem to increase much.,2.Everyone believes that global warming is caused by the activities of humans.,3.Janice Foster believes that she can measure the future global rise in temperature.,T,T,F,4.The rise in carbon dioxide is causing,a steady increase in global warming.,5.George Hambley believes that global,warming will do good rather than harm,to the earth.,6.It is clear what the effects of global,warming will be.,T,T,F,Summary,Try to talk in general terms rather than in details.,e.g.:,I learnt that the earth is becoming warmer.,I learnt that global warming could have,terrible effects on the environment.,A,:,We shall do something about global warming.,B,:,We shall do nothing about global warming.,Debate,What we should do to,protect our earth?,Discussion:,1.Reduce the burning of fossil fuels,2.Plant trees,3.Use bags that can be recycled,Homework,1.Read the passage again and review,the new words and expressions.,2.Write a passage about global,warming.,Thank You!,