《选修六unit4Reading学习教程.pptx》由会员分享，可在线阅读，更多相关《选修六unit4Reading学习教程.pptx（30页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、Pre-reading第1页/共30页第2页/共30页第3页/共30页1.Have you ever seen a greenhouse?is made of glass used for growing plants,especially during cold weather.第4页/共30页2.How does the greenhouse work?第5页/共30页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
2、makes the greenhouse heat up(热量上升)and so the plants can grow throughout(在期间)the cold period.第6页/共30页3.What are Greenhouse Gases?Methane4Ozone51Carbon dioxide2Water vapor 1 1Nitrous oxide3第7页/共30页4.Greenhouse Effect Global warmingGreenhouse gases trapped the heat from the sun,which causes the tempera
3、ture of earth goes up.第8页/共30页Greenhouse effect第9页/共30页Green house effect第10页/共30页Greenhouse Global warming第11页/共30页THE EARTH IS BECOMING WARMER BUT DOES IT MATTER?Reading第12页/共30页 1)How many paragraphs does the reading 2)Make a division of the text.Read the passage quickly(3)text consist of?Please
4、number them.Fast-Reading第13页/共30页Main ideas of each part:Part1 Part1(1)(1)Introduce a debate over the issue of global warming.raising a questionPart2Part2(2-5)(2-5)How global warming comes about.giving examples,using graphs,explanation 第14页/共30页Part3Part3(6)(6)List two different attitudes among scie
5、ntists towards global warming.Part4Part4(7)(7)Its up to readers to think and decide whether people should do something about global warming or not.giving examples,making contrastleaving a question第15页/共30页Are the risks too great?So can you predict the future of the global warming?第16页/共30页 Who write
6、s this article?Sophie Armstrong of Earth CareWhat rose about one degree Fahrenheit?The temperature of the earthCareful readingPart1Part1(1)(1)Introduction of global warming.第17页/共30页2._1._Part2Part2(2-5)How global warming comes about?the burning of fossil fuels human activityCarbon dioxideMethaneWha
7、t are the Greenhouse gases?1.2.3.Water vapor 第18页/共30页Part3Part36 6What are the effects of global warming?v a rise in the sea level v Severe storms,droughts,famines,the spread of diseases,and the disappearance of speciesv Make plants grow fastereffects第19页/共30页The different ideas between Dr.Janice F
8、oster&George HambleyDr.Janice Foster George HambleyCarbon 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 upcatastrophevery seriouspositiveproducea greater range o
9、f animals第20页/共30页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.第21页/共30页from around 315 parts per million to around 370 parts per mill
10、ionHuge quantities of extra carbon dioxideFrom 1957 to 19975.What is the main topic of the article?Global warming/the warming of the earth.第22页/共30页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 Armstron
11、g.BChoose the best answer.第23页/共30页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第24页/共30页3.Whic
12、h 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
13、.D.Janice Foster says that more carbon dioxide will make plants grow faster.A第25页/共30页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
14、about the effects of global warming.D第26页/共30页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.TTF第27页/共3
15、0页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.TTF第28页/共30页Homework1.Read the passage again and review the new words and expressions.2.Write a passage about global warming.第29页/共30页感谢您的观看！第30页/共30页