新人教选修6-Unit4-Global-warm课件.ppt

1、高二英语选修高二英语选修6 Unit4 Global Warming Reading1.Compared to the past few years,whats the weather like this year?2.Do you want to check it out?Here are some pictures based on the actual life scenes in these years for you to refer to.QuestionsIn addition,you may turn to Graph 1.on Page 26 to find out the

2、changes of the temperatures from long-term average.Question:Do you think the whole Do you think the whole world is becoming warmer and world is becoming warmer and warmer?warmer?But does it matter?This is the topic we are going to discuss for today.Unit4 Global Warming ReadingThe Earth Is Becoming W

3、armer But Does It Matter?Fast ReadingGlance quickly at the magazine Glance quickly at the magazine article and answer the questions.article and answer the questions.Sophie Armstrong wrote the magazine article.The name of the magazine is“Earth care”.2.What are the names of the three scientists mentio

4、ned in the article?They are Dr.Janice Foster,Charles Keeling and George Hambley.1.Who wrote the magazine article?What is the name of the magazine?3.What do they think about global warming?Do they agree with one another?They dont agree with each other.Some think the effects will be terrible,while som

5、e others believe that we should not worry about it.Dr.Janice Foster thinks the effects of global warming could be very serious.George Hambley thinks global warming will be mild with few bad environmental consequences.4.What are the two graphs about?Graph 1 shows the temperature increase of one degre

6、e Fahrenheit from 1860 to 2000.5.What is the main topic of the article?Global warming/The warming of the earth.Graph 2 is about the carbon dioxide content in the atmosphere from 1957 to 1997.True or falseRead the article carefully and finish Part 2 on Page 271.The temperature last century didnt incr

7、ease much.()2.Everyone believes that global warming is caused by the activities of humans.()3.Janice Foster believes that global warming is caused by burning fossil fuels.()4.Natural gas is a greenhouse gas.()5.Carbon dioxide is a byproduct of burning fossil fuels.()FFTFT6.People accept Charles Keel

8、ing s data because he took accurate measurements.()7.Flooding could be one of the effects of future global warming.()8.George Hambley believes scientists are just guessing about the effects of global warming.()9.George Hambley is worried about the effects of carbon dioxide on plant growth.()10.It is

9、 clear what the effects of global warming will be.()TTTFF Careful ReadingCareful Reading1.Read the text again and try to get the main idea of the article.The main idea of the passage:Part 1(Paragraphs 1)Part 2(Paragraphs 2-4)Part 3(Paragraphs5-10)Introduce a debate over the issue of global warmingIl

10、lustrate how global warming comes aboutList two different attitudes among scientists towards global warmingPart 4(Pa 11)Its up to readers to think and decide whether people should do something about global warming or notQuestions How has the global How has the global warming come warming come about?

11、about?Human activity-burning of fossil fuels.Greenhouse effect-greenhouse gases-we need those gases.We add huge quantities of extra carbon dioxide to the atmosphere by burning Fossil fuels.The carbon dioxide content of the atmosphere went up from around 315 parts per million to around 370 parts per

12、million from 1957 to 1997(See Graph 2 on Page 26)The two different viewpoints towards the effects of global warming between Dr.Janice Foster and George Hambley Dr.Janice FosterGeorge HambleyCarbon dioxide has caused the global temperature to _.An increase of five degrees would be a _ and could be _.

13、More carbon dioxide is a _ thing,which makes crops _ and will encourage _.go upcatastrophe very seriouspositiveproducea greater range of animalsOf the two ideas,which are you in favor of?The Dr Janice Fosters.Why?Because we have witnessed a large number of disasters predicted by some people.What are

14、 the effects and disasters of global warming?Whats worse,the glaciers(Whats worse,the glaciers(冰川）冰川）of the South Pole are of the South Pole are beginning to crackbeginning to crack（破裂）（破裂）The glaciers of the Poles are starting to melt due to the increasing temperatures caused by global warming.tsun

15、amiThe sea level to rise.tornadosSevere stormsdroughtsfaminesthe spread of diseasesdestruction of speciesWhat should we do about What should we do about the terrible effects above?the terrible effects above?.Try to reduce the use of motor vehicleselectric vehiclebikerunningSolar energy carPlanting treesCleaning the Cleaning the rubbishrubbishReturn the green world to usAssignment1.Write an argumentation titled“Environment Protection”based on the viewpoints in the text and yours.2.Preview the language points in the text and find out your difficult pointsLets make this world a better place!