高中英语-Unit-4-Global-warming-Reading-1ppt课件-新人教版选修61

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,Unit 4 Global Warming,1,Reading,Reading,2,What is the greenhouse made and used for?,What is the greenhouse made an,3,高中英语-Unit-4-Global-warming-Reading-1ppt课件-新人教版选修61,4,高中英语-Unit-4-Global-warming-Reading-1ppt课件-新人教版选修61,5,A,greenhouse,is made of glass and is used for growing plants,especially during cold weather.,A greenhouse is made of,6,How does it work?,The air inside is warm because the glass traps the heat from the sun and keeps it from escaping.This makes the greenhouse heat up and so the,plants can grow,throughout the,cold period.,How does it work?,7,What are the“greenhouse gases”?,In the atmosphere surrounding the earth there are gases,which are called“greenhouse gases”,including carbon dioxide,methane(甲烷,沼气)and water vapor.,What are the“greenhouse gases,8,What do you think greenhouse,gases do?,They trap heat from the sun and therefore warm the earth.,What do you think greenhouse,9,Main ideas of each part,Writing techniques,(Paragraph 1),Introduce a debate over the issue of global warming.,Raising a question,Skimming,Main ideas of each partWriting,10,Main ideas of each part,Writing techniques,(Paragraphs 2-3),Illustrate how global warming comes about.,Giving examples,using graphs,explanation.,Main ideas of each partWriting,11,(Paragraphs 4-5),List two different attitudes among scientists towards global warming.,Giving examples,making contrast.,(Paragraphs 4-5)List two di,12,(Paragraph 6),Its up to readers to think and decide whether people should do something about global warming or not.,Using a question,leaving readers to think over the issue.,(Paragraph 6)Its up to reade,13,Read the text carefully and fill in the blanks.,Scientists,Opinion,Janice Foster,We need 1_ like carbon dioxide,methane and water vapour,but if we add huge 2_ extra carbon dioxide to the atmosphere by burning fossil fuels,it will cause the 3_ to go up.,gases,quantities of,global temperature,Read the text carefully and fi,14,Scientists,Opinion,Janice Foster,Over the next 100 years the amount of warming could be as low as 1 to 1.5 degrees Celsius,but it could be as high as 5 degrees Celsius.,An increase of five degrees would be a 4_.,catastrophe,ScientistsOpinionJanice Foster,15,Scientists,Opinions,George Hambley,Believes that we shouldnt worry about 5_ of carbon dioxide in the air.,Predicts that any warming will be mild with few bad environmental 6_.,7_ that more carbon dioxide is actually a 8_ thing,which will make life for human beings better.,high levels,consequences,States,positive,ScientistsOpinionsGeorge Hambl,16,Choose the best answers according to the text.,1.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,Choose the best answers accord,17,2.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,2.Which of the following is D,18,Comprehending,Comprehending,19,浓度单位,浓度单位,20,Answer the questions.,Who wrote the magazine article?What is the name of the magazine?,Sophie Armstrong wrote the magazine article.The name of the magazine is Earth Care.,Post reading,Answer the questions.Post read,21,2.What are the names of the three scientists mentioned in the article?,They are Dr.Janice Foster,Charles Keeling and George,Hambley.,2.What are the names of the t,22,3.What do they think about global,warming?,Do they agree with one another?,They dont agree with each other.,Dr.Janice Foster,thinks,the effects of,global warming could be very serious.,3.What do they think about gl,23,George Hambley,thinks,global warming will be mild with few bad environmental consequences.,Charles Keeling,believes,it is the burning of more and more fossil fuels that is resulting in a big increase in carbon dioxide.,George Hambley thinks,24,4.What are,the two graphs,about?,Graph I,shows the temperature increase of one degree Fahrenheit between 1860 to 2000.,Graph 2 is about the carbon dioxide content in the atmosphere,1958-1990.,4.What are the two graphs abo,25,5.What is,the main topic,of the,article?,Global warming/the warming of,the earth.,5.What is the main topic of t,26,2.Check the statements on page 27,True:,3,5,6,7,8,False:,1,2,4,9,10,Correct sentences,:,1.The temperature last century increased,much.,2.Not everyone believes that global,warming is caused by human activities.,2.Check the statements on pag,27,4.Natural gas is not a greenhouse gas,but a fossil fuel.,9.George Hambley thinks that more,carbon dioxide is a positive thing and,it will make plants grow