大学体验英语3第一单元教辅.ppt

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1、Listen&TalkReturn to MenuReturn to Menu Lead InTurn to p.8,and lets listen.Turn to p.8,and lets listen.Listen to the following passage about global warming and try to fill the missing words in the blanks.You will hear the passage three times.When the passage is read for the first time,you should lis

2、ten carefully for its original idea.When the passage is read for the second time,you are required to fill in the blanks with the exact words you have just heard.Finally,when the passage is read for the third time,you should check what you have written.Global warming may be the most harmful environme

3、ntal problem 1)_ have created,and the most difficult to solve.Our society is largely 2)_ by the fossil fuels that cause global warming.Its growing consequences ecological disruption,floods,droughts,disease are convincing more and more people that we must cut down 3)_ pollution.Many people view globa

4、l warming as a problem too large and too 4)_ for anything they can do to 5)_.However,in reality,there are lots of things we can do to stop,or at least to reduce it.Plant a tree.Trees“6)_”carbon dioxide,but only as long as theyre living.Install low-flow shower heads and faucets.Youll use less than ha

5、lf the water without 7)_.Buy energy-efficient electronics and appliances.Then,turn them off when theyre not in use.Reduce!Reuse!Recycle!Recycling a stack of newspapers only 8)_ will save a good sized tree.Mount a local 9)_ against global warming.Educate your community about how to cut greenhouse gas

6、 pollution.Support measures at the national and local levels that increase energy efficiency,and that 10)_ the use of clean,renewable solar and wind technology.First time2nd time2nd timeGlobal warming may be the most harmful environmental problem 1)_ have created,and the most difficult to solve.Our

7、society is largely 2)_ by the fossil fuels that cause global warming.Its growing consequences ecological disruption,floods,droughts,disease are convincing more and more people that we must cut down 3)_ pollution.Many people view global warming as a problem too large and too 4)_ for anything they can

8、 do to 5)_.However,in reality,there are lots of things we can do to stop,or at least to reduce it.Plant a tree.Trees“6)_”carbon dioxide,but only as long as theyre living.Install low-flow shower heads and faucets.Youll use less than half the water without 7)_.Buy energy-efficient electronics and appl

9、iances.Then,turn them off when theyre not in use.Reduce!Reuse!Recycle!Recycling a stack of newspapers only 8)_ will save a good sized tree.Mount a local 9)_ against global warming.Educate your community about how to cut greenhouse gas pollution.Support measures at the national and local levels that

10、increase energy efficiency,and that 10)_ the use of clean,renewable solar and wind technology.Second time3rd time3rd timeGlobal warming may be the most harmful environmental problem 1)_ have created,and the most difficult to solve.Our society is largely 2)_ by the fossil fuels that cause global warm

11、ing.Its growing consequences ecological disruption,floods,droughts,disease are convincing more and more people that we must cut down 3)_ pollution.Many people view global warming as a problem too large and too 4)_ for anything they can do to 5)_.However,in reality,there are lots of things we can do

12、to stop,or at least to reduce it.Plant a tree.Trees“6)_”carbon dioxide,but only as long as theyre living.Install low-flow shower heads and faucets.Youll use less than half the water without 7)_.Buy energy-efficient electronics and appliances.Then,turn them off when theyre not in use.Reduce!Reuse!Rec

13、ycle!Recycling a stack of newspapers only 8)_ will save a good sized tree.Mount a local 9)_ against global warming.Educate your community about how to cut greenhouse gas pollution.Support measures at the national and local levels that increase energy efficiency,and that 10)_ the use of clean,renewab

14、le solar and wind technology.Third timeCheck upCheck upGlobal warming may be the most harmful environmental problem 1)_ have created,and the most difficult to solve.Our society is largely 2)_ by the fossil fuels that cause global warming.Its growing consequences ecological disruption,floods,droughts

15、,disease are convincing more and more people that we must cut down 3)_ pollution.Many people view global warming as a problem too large and too 4)_ for anything they can do to 5)_.However,in reality,there are lots of things we can do to stop,or at least to reduce it.human beingspoweredgreenhouse far

16、 awaymake a differencePlant a tree.Trees“6)_”carbon dioxide,but only as long as theyre living.Install low-flow shower heads and faucets.Youll use less than half the water without 7)_.Buy energy-efficient electronics and appliances.Then,turn them off when theyre not in use.Reduce!Reuse!Recycle!Recycl

17、ing a stack of newspapers only 8)_ will save a good sized tree.Mount a local 9)_ against global warming.Educate your community about how to cut greenhouse gas pollution.Support measures at the national and local levels that increase energy efficiency,and that 10)_ the use of clean,renewable solar an

18、d wind technology.breathe indecreasing performancefour inches highcampaignencourageLook at the following pictures and share your worries with your partner about the environment of the earth we live on.Heated.Sweating!Why Why is is the the Earth Earth sweating sweating and and steaming?steaming?Do Do

19、 you you want want to to join join the the crowd crowd standing standing by by and and watching,watching,or or to to do do something something to to help help her?her?Now lets talk.Now lets talk.Look at the following pictures and share your worries with your partner about the environment of the eart

20、h we live on.Mixed Garbage Overflowing Sorting and Recycling!How How do do you you dispose dispose of of tin tin cans,cans,plastic plastic bags,bags,and and used used batteries?batteries?Do Do you you know know anything anything about about garbage garbage sorting sorting and recycling?and recycling

21、?Look at the following pictures and share your worries with your partner about the environment of the earth we live on.Solar Energy Is Clean So Is Wind!Do Do you you know know any any machine machine or or appliance appliance that that is is powered powered by by solar solar or or wind wind energy?e

22、nergy?Can Can you you list list any any other other clean clean energy energy technologies?technologies?TaskTask1 1TaskTask2 2DialogueDialogue1 1DialogueDialogue2 2Lin:Is the Earth really getting warmer?John:Yes,theres no doubt about it.Scientists say that four years out of the last ten have been th

23、e hottest since records began.Lin:But why does it matter if the Earth gets a little warmer?John:It matters because it changes a lot of things concerning our life.If the Earth gets hotter,this will cause the level of the sea to rise.Lin:You mean it will cause flooding?John:Yeah,vast areas of the Indi

24、an coast,Bangladesh,Holland,and even London,would be under water.To say nothing of beautiful Venice.Turn Turn to to p.p.10,10,and and lets lets listen and read.listen and read.Dialogue 1:The Effects of Global Warming Lin:Thats terrible!And will there be any other effects?John:Yes,there will be many.

25、The global weather system will change too,causing too much rain in some areas and too little in others.Lin:Can we do something about it?John:Therere a lot we can do.First of all,we must reduce the amount of pollution coming from industries and cars and stop deforestation.Otherwise,we will suffer fro

26、m our careless actions.Dialogue 1:The Effects of Global Warming Dialogue 2:The Environmentally Informed Judy:Ah,youre back.Would you like me to run a bath for you?Ming:Oh no.Ill take a shower.Baths use up too much water.A bath uses up 3 times more water than a shower,you know.Judy:Thats incredible!M

27、ing:Yes,its a fact.And if you like to keep the water running while you brush your teeth,you waste from 25 to 45 liters every time you brush.This way a family of four would fill an Olympic pool by the time the youngest child reaches 21.Judy:Wow!Here,have a cigarette.Turn Turn to to p.p.10,10,and and

28、lets lets listen and read.listen and read.Ming:No way!Not only is smoking bad for your health,its the source of social problems in developing countries because,since profit from tobacco is very high,tobacco has taken up the best food-growing areas,leading to food shortages.Judy:So for every cigarett

29、e I smoke,someone is starving?Ming:And many tobacco planters use wood to dry tobacco leaves.You know that when you down a tree,youre taking another step on your way to erosion.Judy:And erosion is also the beginning of hunger.OK,no more cigarettes and only quick showers.Dialogue 2:The Environmentally

30、 Informed A debate between foreign visitors,who have just come to visit China,and their Chinese friends,college students,about the advantages and disadvantages of building the Three Gorges Dam.SituationSituationRoleRoleARoleRoleBThe foreign visitors,believe that building such a large dam will bring

31、about some damages to the ecosystem,hence it will bring more disadvantages than advantages.A debate between foreign visitors,who have just come to visit China,and their Chinese friends,college students,about the advantages and disadvantages of building the Three Gorges Dam.SituationSituationRoleRole

32、ARoleRoleBReferenceReferenceThe Chinese students argue that the project will prevent serious flooding and reduce coal burning for electricity,hence it involves more advantages than disadvantages.A debate between foreign visitors,who have just come to visit China,and their Chinese friends,college stu

33、dents,about the advantages and disadvantages of building the Three Gorges Dam.SituationSituationRoleRoleARoleRoleBReferenceReferenceA:So,weve heard that there are plans to build a massive dam in the Three Gorges area of the Yangtze.B:Thats right.In fact,theyve already started the preliminary constru

34、ction.A:But what about the environmental implications?B:What do you mean?A:Well,the damage to the eco-system Isnt it going to mean flooding a great big area,forcing people to re-locate and immersing the sites of special archaeological interest?B:I see what you mean,but thats what youve read in the W

35、estern press and youve only read half of the story.Task 1Task 1A:Hows that?B:Theres no doubt that the project does have environmental implications but on the whole the benefits outweigh the disadvantages.During the rainy season,the Yangtze often floods and it causes masses of damage,destroying homes

36、,crops and so on.The dam will prevent this flooding and so,while its true that some people have to move,many people will reap the benefits.Whats more,the dam will provide hydro-electricity to many homes thereby reducing pollution from coal burning power plants.Task 1Task 1A:What about the fish?B:The

37、 fish?A:Arent there some breeds of fish which swim upriver to spawn（产卵）（产卵）?B:Were talking about saving human lives and livelihoods,and youre worried about the fish!As it goes,Ive heard of other dams where theyve built special little gates or something like that which allow the fish to pass through.

38、A:And Chinas going to lose one of its most famous sites B:Well,not really.Some of the sites will look grander with a higher water level.Why dont you go and see them now while you still have the chance.You can revisit them to make a comparison after the Dam is built.Task 1Task 1A Chinese student disc

39、usses some resource-saving and environmental protection techniques with her host mother in Britain.SituationSituationRoleRoleARoleRoleBSuppose youre studying in a university in London and staying with a British family.You do not understand why the host family has the air-conditioning on almost all t

40、he time.A Chinese student discusses some resource-saving and environmental protection techniques with her host mother in Britain.SituationSituationRoleRoleARoleRoleBReferenceReferenceSuppose youre British.You think it is necessary to keep a constant temperature in the house,for it makes you and your

41、 family more comfortable.A Chinese student discusses some resource-saving and environmental protection techniques with her host mother in Britain.SituationSituationRoleRoleARoleRoleBReferenceReferenceA:You know,Mrs.Brady,Ive been meaning to ask you something B:Yes,dear,whats that?A:Well,why do you a

42、lways keep the air-conditioning running?B:Why,would you rather swelter in the heat?A:Well,its not that.Its true that sometimes its really hot outside and then Im quite happy not to suffer,but it seems to me that the air-conditioning has become a habit and you keep it on even on the days when it isnt

43、 so hot.B:We like to have a constant temperature in the house,you know.Task 2Task 2A:But it means theres always an artificial atmosphere,and never any fresh air.Why do you keep it on on cooler days rather than turning it off and opening the windows?You could reduce your power bill by quite a lot too

44、.B:Are you trying to save me money?Am I charging you too much rent?A:Oh no,its not that.But we were talking in class the other day about being environmentally conscious and I was thinking that not only is the air conditioning bad for the environment,its bad for our health AND its expensiveB:Well,you may be right.Its just part of our lifestyle,you know.Ill tell you what.Why dont we talk about this with the others over dinner tonight and see what they think?A:OK,Mrs.Brady,that will be interesting.Thank you.Task 2Task 2The End