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1、Step1: Lead-in(Earth Songby M.J.)Now, our home - the earth is facing many terrible problemsWhat is happening to the earth?air pollutionwater pollutionflooddroughttoo many trees are cut down = deforestationWhich is the main topic in this unit?global warmingWhat is global warming?What caused global wa
2、rming?What can we do about global warming? hot ! ! !Learning & teaching aims: To develop some reading abilities. To learn some key words and phrases.1. To develop the sense of environmental protection.Step2: Check Your Preview (key words)1.化石燃料化石燃料2.副产品副产品3.温室效应温室效应1. fossil fuels2. byproduct 3. 4.温
3、室气体温室气体5.甲烷，沼气甲烷，沼气6.自然现象自然现象4. greenhouse gases5. methane n. 6. Step2: Check Your Preview (useful pharses)1.发生发生; 造成造成2.大量的大量的3.上升上升; 增长增长; 升起升起4.导致导致1. come about2. quantities of3. go up 4. result in5.同意同意; 赞成赞成; 订购订购6.6.反对反对7.7.增加，聚集增加，聚集 8.8.继续继续5. subscribe to6. be opposed to7. build up 8. keep
4、 onStep3: Pre-readingA. The cause of the global warmingB. The phenomenon of the global warmingC. It doesnt matter that the earth is becoming warmerD. Both A and BStep4: Fast Reading (for main idea)Part1c. an introduction of global warmingPart 2Part 3Part 4d. How global warming comes about?a. two dif
5、ferent attitudes towards global warmingb. whether people should do sth. about global warming(Para_ )(Para_to _ )(Para_ )(Para_ )12567 How many paragraphs does the reading text consist of? Please number them. 2) Make a division of the text.Step5: Careful Reading (for detailed information)1.Who wrote
6、the magazine article? 2. What is the name of the magazine? 3. Whats the meaning of the word “explore” in Line.4? A. to examine a problem carefully. B. to answer a problem C. to visit somewherePart1 (Para.1): an introductionPart2 (Para.2-5): the cause of global warming _ of fossil fuelshuman activity
7、 _ gases are produceda natural phenomenon called_ heat from the sunThe earth is _burning greenhouse greenhouse effect trap warmedWhat is the cause of global warming?Who is to blame for the global warming?Human activity? Or natural phenomenon?Part3 (Para.6): two different attitudesBad effectsGood eff
8、ectspessimisticoptimistic 1. the sea level to rise 2. severe storms 风暴风暴 3. floods 4. droughts 干旱干旱 5. famines 饥荒饥荒 6. the spread of disease 7. the disappearance of species1. make plants grow faster 2. crops will produce more 庄稼产量更高庄稼产量更高3. a greater range of animals 物种的丰富物种的丰富4. make life better Ja
9、nice Foster George Hambley1. Do they draw a conclusion at last?2. The writer probably thinks _.A. It matters.B. It doesnt matter.Part4 (Para.7): Does it matter?NoPara. 1Para. 7Para. 2-5Para. 6Step6: Post-reading (organization) It is certain that the earth is becoming warmer, but there are some very
10、different attitudes towards the effects of global warming. Some people think that if global temperature continues going up, it would be a disaster . Global warming would lead to a rise in sea level; others predict weather changes like severe storms, droughts, famines, heat waves, and heavy snowstorm
11、s, famines, the spread of diseases, and the disappearance of species. On the other hand, there are those who believe more carbon dioxide is actually a good thing. It will make plants grow faster; and encourage a greater variety of animals.a greater range ofkeeps oncatastropheresult inThere is no dou
12、bt thatclimateStep6: Post-reading (consolidation) Replace the underlined expressions with the words, phrases and patterns we have learned in the passage.positiveStep7: Watching and discussing1. What does the video want to tell us?2. According to what we have learned today, what cause global warming? 3. What should we do about global warming? paper bagswitch offplastic bagHomeworkl Try to retell the passage after class.l Prepare for language points. The green world will return to us!结束结束