人教版-英语选修6第四单元reading1课件.ppt（纯ppt,无音视频）

1、Unit 4 Global warmingReadingPre-reading1.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(挡住挡住,吸收吸收)the heat from the sun and keeps it from escaping(逃跑逃跑).This makes

2、the greenhouse heat up(热量热量上升上升)and so the plants can grow throughout(在在期间期间)the cold period.4.Greenhouse EffectGlobal warmingGreenhouse gases trapped the heat from the sun,which causes the temperature of earth goes up.THE EARTH IS BECOMING WARMER BUT DOES IT MATTER?Reading 1)How many paragraphs doe

3、s the reading 2)Make a division of the text.Read the passage quickly(3)text consist of?Please number them.Fast-ReadingMain ideas of each part:Introduce a debate over the issue of global warming.raising a questionHow global warming comes about.giving examples,using graphs,explanation List two differe

4、nt attitudes among scientists towards global warming.Its up to readers to think and decide whether people should do something about global warming or not.giving examples,making contrastleaving a questionAre the risks too great?So can you predict the future of the global warming?Who writes this artic

5、le?Sophie Armstrong of Earth CareWhat rose about one degree Fahrenheit?The temperature of the earthCareful readingIntroduction of global warming.2._1._(2-5)How global warming comes about?the burning of fossil fuels human activityCarbon dioxideMethaneWhat are the Greenhouse gases?1.2.3.Water vaporWha

6、t 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 fastereffectsRead and answer the questions.1.Who wrote the magazine article?What is the name of the magazine?2.What are the names o

7、f 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.

8、Janice FosterGeorge HambleyCharles Keelingthinks the effects of global warming could be very serious(严重的严重的).thinks global warming will be mild with few bad environmental consequences.The different ideas between Dr.Janice Foster&George HambleyDr.Janice Foster George HambleyCarbon dioxide has caused

9、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 of animals4.What are the two graphs about?The first graph shows the temperatur

10、e 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 millionHuge quantities of extra carbon dioxideFrom 1957 to 19975.What is the main topic of the arti

11、cle?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.BChoose the best answer.2.Which of the following is Dr Janice Fosters opinion?A.The result of the temp

12、erature 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.A3.Which of the following is TRUE according to the text?A.The temperature of the earth increased about one degree Fahrenheit duri

13、ng 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.A4.The author probably agrees that _A.actually

14、 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.DTrue or false?1.The temperature in the last century did not seem to increase much.2.Everyone b

15、elieves that global warming is caused by the activities of humans.3.Janice Foster believes that she can measure the future global rise in temperature.TTF4.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

16、harm to the earth.6.It is clear what the effects of global warming will be.TTFA:We shall do something about global warming.B:We shall do nothing about global warming.DebateWhat 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 p 经常不断地学习,你就什么都知道。你知道得越多,你就越有力量p Study Constantly,And You Will Know Everything.The More You Know,The More Powerful You Will Be写在最后Thank You在别人的演说中思考，在自己的故事里成长Thinking In Other PeopleS Speeches，Growing Up In Your Own Story讲师：XXXXXX XX年XX月XX日