【课件】Unit3Readingandthinking课件-2021-2022学年高中英语选择性必修第三册.pptx

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1、新人教版选择性必修三Unit3Reading and thinkingDiscuss climate changeLead-in Look and discuss1.Whats happening in the photo?2.Why did it happen?The ice is melting.Because of the greenhouse effect/global warming.Video Time:The story behind the picture Think:Other influences of the greenhosue effect dyinganimalse

2、xtreme weathernatural disastersLook at the graph below.What is it about?What information can you get from it?The earth is becoming warmer and warmer.Reading 1.What type of writing is this passage?A.Argumentative writing B.Narrative writingC.Expository writing D.Advertising writingC2.In which part of

3、 a newspaper or magazine may we find this passage?A.Entertainment B.EconomyC.Education D.EnvironmentD本文是一篇说明文。说明文是客观说明事物的一种文体，以解说或介绍事物的形状、性质、成因、构造、功用、类别等为主要内容。说明文主要通过对客观事物或事理的介绍说明，达到以知识教人的目的，因此说明文以客观、准确为基本要求，强调科学性和客观性。Read for main idea text type Task 1Read for main idea text type Task 1 2.match the

4、 main idea with each part:Part 1(para.1-2)Part 2(para.3)Part 3(para.4)Part 4(para.5)D.The evidence of dramatic climate changeB.The causes of global warmingA.The effects of the rise in temperatureC.The solutions to reducing greenhouse gas emissionsClimate change Evidence SolutionsCauses Effects Scan

5、and finish the mind map Task 2本文按照“现象原因危害措施”的逻辑顺序展开，环环相扣，步步深入。标题Climate Change Requires the Worlds Attention点明了作者的诉求：气候变化对地球生态系统的影响是巨大的，需要全人类共同关注和面对。文本以现在时态和将来时态为主，强调文章的现实意义及对将来不利后果的预测。Para 1:ProblemThe _ is getting warmer and warmer.Evidence 1:_Evidence 2:_Evidence 2:_Eartha warming ocean and atmos

6、pheremelting icerising sea levelsclimatechangePara 1 CLIMATE CHANGE REQUIRES THE WORLDS ATTENTION We have known about climate change for decades.There is little doubt that Earth is getting warmer and warmer(see the graph).A warming ocean and atmosphere along with melting ice and rising sea levels pr

7、ovide evidence of a dramatic changein the global climate.气候变化毫无疑问.3.和；连同提供证据一个巨大的变化Para 2:An example of climate changeTime Where What happenedWhy did it happen2013Norways Arctic Island of Svalbard.A polar bear died of starvation.The bear cannot hunt seals as before.Para 2 In 2013,a lot of people wer

8、e shocked by a news photo of a dead polar bear that was found on Norways Arctic island of Svalbard.According to the scientists who found its dead body,all that remained of the polar bear was skin and bones.An expert who has studied polar bears for many years said that from the position of its dead b

9、ody,the bear appeared to have starved and died.Experts claimed that low sea-ice levels caused by climate change meant that the bear could not hunt seals as before,so it had to travel greater distances in order to find food.This alarming case showed how the increase in temperature had an impact on Ea

10、rths ecology.被.震惊北极熊所剩下的一切似乎宣称令人震惊的案例对.产生影响过去分词作定语过去分词作定语1.IdoubtTonywillaccepttheinvitation.2.Thereislittledoubttheirhabitatsarebeingdestroyed.3.Thewoman,alongwithtwochildren,(come)hereeveryday.4.They(shock)bythenewsthattheirsonneededanoperation.5.Thepresenceorabsenceofcloudscanhaveanimpacttemperat

11、ure.语法填空。语法填空。whether/if考点追考点追击击thatcomeswereshockedonDefinitionDefinitionFunctionA big problemFunctionHeatfromthesunenterstheatmosphereandwarmsEarthssurfaceasshort-waveradiation.Peopleproducehugeamountsofextragreenhousegasesbyburningfossilfuels.keepingEarthsclimatewarmandhabitableMoreheatenergyistr

12、appedintheatmosphereandcausesEarthssurfacetemperaturetorisequickly.Greenhouse Effectman-made natural2.Read Para.3 to finish the following chart.Causes of global warming Then what is causing the increase in the global average surface temperaturethe global average surface temperature?Climate scientist

13、s often mention a key climate process called the greenhouse greenhouse effect effect which has two common meanings:the natural greenhouse effect and the man-mademan-made greenhouse effect.The natural greenhouse effect refers torefers to the fact that heat from the sun enters the atmosphere and warms

14、 Earths surface as as short-wave radiation.short-wave radiation.The heat is released back intointo space at longer wave lengths.Greenhouse gases in the atmosphere,such as methane and carbon dioxide,trap some of the heat,keeping Earths climate warm and habitable.Without this process,Earth could not s

15、ustain life.sustain life.However,the man-made greenhouse effect has now become a big problem.When people produce huge amounts of extra greenhouse gases by burning fossil fuels,more heat energy is trapped in is trapped in the atmosphere and causes Earths surface temperature to rise quickly.Para 3全球平均

16、表面温度温室效应人造的指的是以短波辐射的形式释放到维持生命be trapped in意是意是“被困在被困在;陷入困境陷入困境;陷入陷入”。be trapped in意是意是“被困在被困在;陷入困境陷入困境;陷入陷入”。becaughtin表示“陷入,卷入”；bestuckin表示“受困于，被困在中，陷入，卡住不动”。含蓄条件句含蓄条件句1.yourhelpIcouldnotgetthereontime.2.He(trap)inthehardtask.3.AfriendofmineoftenreferredDr.BethunewhenIwasinCanada.4.Thecoldweatherca

17、usedtheplants(die).5.Thefacthehasfullyrecoveredmakesmefeelgood.语法填空。语法填空。Without考点追考点追击击wastrappedtotodiethat3.Read Para.4 to finish the following chart.Negative effectsnot only .but also .extreme weathernatural disasterscausing serious damagecosting human livesWhat extreme weather is mentioned in P

18、ara.4？extreme rainstorms and heatwavesThereisstrong and comprehensive evidencestrong and comprehensive evidencethattheriseintemperaturehasledtoanincreasein extreme weatherextreme weatherandnatural disastersnatural disastersworldwide,notonlycausingseriousdamage,butalsocosting human lives.Climatescien

19、tistshavewarnedthatifwedonottakeappropriateactionstakeappropriateactions,thiswarming trend warming trend willprobablycontinueandtherewillbeahigherpricetopay.Infact,newsreportsarefrequentlybroadcastaboutextremerainstorms and heatwavescausingdeathsandeconomic losseseconomic losses。Para 4充分且全面的证据极端天气自然

20、灾害造成生命损失采取适当的行动变暖的趋势极端暴雨和热浪经济损失What are the solutions to global warming？4.Read Para.5 and answer the question.The governments need to consider making policies and taking appropriate actions and measures to reduce greenhouse gas emissions.Individuals can also reduce our“carbon footprint”by restrictin

21、g the amount of carbon dioxide our lifestyles produce.Para 5Continued greenhouse gas emissions will result in result in further warming and long-lasting changeslong-lasting changes to the global climate.This requires the attention of people all over the world.Governments need to consider making cons

22、ider making policies and taking appropriate actions and taking appropriate actions and measures measures to reduce greenhouse gas emissions.We as individuals as individuals can also reduce our carbon footprint by restricting the amount of restricting the amount of carbon dioxidecarbon dioxide our li

23、festyles produce.It is our responsibility toIt is our responsibility to seize seize every opportunityevery opportunity to educate everyone about global warming,along with its causes and impacts,because this is the most serious issue affecting all of us on this planet.So what will you do to help?导致，由

24、.造成=lead to=contribute to=result from v持久变化 考虑做某事 采取适当的行动和措施采取适当的行动和措施 作为个人 限制二氧化碳的量做做.是我们的责任是我们的责任抓住机会做某事Climate change Evidence SolutionsCauses Effects governmentindividualsextreme weathernatural disastersGreenhouse effectnatural greenhouse effectman-made greenhouse effectPost thinking:mind-mapPos

25、t thinking:mind-mapGreenhouseeffectLanguage points1melting ice2provide evidence of 3a dramatic change4skin and bones5trap the heat6sustain life7huge amounts of8fossil fuels9pay a high priceLanguage points:Importantphrases(P26 P27)正在融化的冰正在融化的冰为为提供依据提供依据 /证据证据急剧变化急剧变化困住热量困住热量皮包骨皮包骨大量的大量的化石燃料化石燃料维系生命维系

26、生命付出巨大的代价付出巨大的代价10long-lasting changes11make policies 12seize the opportunity13map out14cause and effectLanguage points:Importantphrases(P26 P27)持久的变化持久的变化抓住机会抓住机会制定政策制定政策规划；安排规划；安排因果因果Discussion Who do you think should take responsibility for dealing with climate change?What can we do?I think we al

27、l need to take responsibility for dealing with it.Individuals can change their behaviour and try to reduce their carbon footprint,while companies and governments can do the same on the larger scale.TLanguagepoints n.图；图表；曲线图 n.排放物；散发物；排放 vi.&vt.(使)融化；熔化；软化 n.生态；生态学 vt.&n.排放；释放；发布 adv.遍及全球地 adj.世界各地的

28、 n.趋势；趋向；动向 vt.&vi.播送；广播；传播graphemissionmeltecologyreleaseworldwidetrendbroadcastKey words n.政策；方针；原则 n.足迹；空间量；面积 vt.抓住；夺取；控制 vi.&vt.(使)挨饿；饿死 adj.适合居住的 adj.可持续的；合理利用的 adj.全部的；所有的；详尽的 adv.频繁地；经常 vt.限制；限定；束缚policyfootprintseizestarvehabitablesustainablecomprehensivefrequentlyrestrict 和一起 对有影响 指的是 大量的

29、被包裹在 采取行动 导致 为负责任along withhave an impact onrefer tohuge amounts ofbe trapped intake actionresult intake responsibility forKey phrases 1.There is little doubt that Earth is getting warmer and warmer.There is little/no There is little/no doubtdoubt that.that.几乎几乎没有疑问的是没有疑问的是There is some doubt whethe

30、r.是否是否是有疑问的是有疑问的that引引导同位同位语从句，解从句，解释说明明doubt的具体内容的具体内容注意：doubt前有否定意义的词修饰时，由that引导(否定句)；doubt前有肯定意义的词修饰时，whether或if引导（肯定句/疑问句）。along with 意为“连同；以及；和一起”。连接前后两个主语时，谓语动词应和前面的那个主语保持一致。例：1.Shecametodinneralongwithherfriends.2.Jim,alongwithhisclassmates,hasseenthefilm.。练习Thewoman,alongwithtwochildren,(com

31、e)eswith，togetherwith；alongwith;aswellas;besides;apartfrom;except.就前一致的词有哪些？2.According to the scientists who found its dead body,all that remained of the polar bear was“skin and bones”.who引引导的定的定语从句，修从句，修饰先行先行词scientiststhat引引导的定的定语从句，修从句，修饰先行先行词all,that不能用不能用which代替代替句意：根据发现北极熊尸体的科学家的说法，这只北极熊只剩下了“

32、皮和骨头”。指的是参考；查阅_谈到；提到referto1.HisreportreferstothesituationintheMiddleEast.2.Thewriteroftenreferstoadictionary.3.Thebookwhichyoureferredtoisnotinthelibrary.ThenaturalgreenhouseeffectreferstothefactthatheatfromthesunenterstheatmosphereandwarmsEarthssurfaceasshort-waveradiation.1.谈到；提到2.参考；查阅3.指的是that

33、引导定语从句与同位语从句 ThenaturalgreenhouseeffectreferstothefactthatheatfromthesunenterstheatmosphereandwarmsEarthssurfaceasshort-waveradiation.The news（that）he told me is really encouraging.The news that our team has won the game is really encouraging.that引导的定语从句和同位语从句的区别性质不同、句法功能不同同位语从句的连接词不充当句子成分，但不可省略；定语从

34、句的关系代词代替先行词在句中充当成分，充当宾语时可省略。这个“自然的”温室效应是指来自太阳的热量以短波辐射的形式进入大气层，使地球表面变暖。the fact that.that 引导的是同位语从句。5.There is strong.disasters worldwide not only causing serious damage but also costing human lives.not only.but also.连接两个相同的结构,可以连接两个主语、谓语、宾语、表语、状语等，还可连接两个并列的句子，所强调的重点是后面部分。当它连接主语时，谓语动词遵循就近原则。not only

35、位于句首时，用倒装。1.Shakespeare was not only a writer but also an actor.2.Not only Tom but also I am an engineer.巩固练习：不但是位作家，而且是位演员1.Homework：2.1.climate changes2.There is little doubt that.3.along with4.provide evidence5.a dramatic change para 11.气候变化2.毫无疑问.3.和；连同4.提供证据5.一个巨大的变化1.beshockedby2.appeartodo=se

36、emtodo3.inordertodo.4.thealarmingcase5.haveanimpact/effect/influenceon1.被.震惊2.似乎3.目的是4.令人震惊的案例5.对.产生影响 para 2para31.globalaveragesurfacetemperature2.akeyclimateprocess3.greenhouseeffect4.man-made5.referto(referred-referring)reference6.asshort-waveradiation7.release.into.8.keepearthsclimatewarmandhab

37、itable9.sustainlife10.hugeamountsof11.betrappedin1.全球平均表面温度2.一个关键气候过程3.温室效应4.人造的5.指的是6.以短波辐射的形式7.释放到8.地球温度保持温暖并适于居住9.维持生命10.大量的11.被困在1.strongandcomprehensiveevidence2.extremeweather3.naturaldisasters4.causedamage5.costhumanlives6.takeappropriateaction7.thewarmingtrend8.frequentlybroadcast9.extremera

38、instormsandheatwaves10.economiclossesPara41.充分且全面的证据2.极端天气3.自然灾害4.造成损害5.造成生命损失6.采取适当的行动7.变暖的趋势8.频繁地报道9.极端暴雨和热浪10.经济损失Para.51.resultin=leadto=contributeto=resultfromv.as a result of =because of=due to=2.considermakingpolicies3.takeappropriateaction/measures/steps4.restricttheamountofcarbondioxide5.It

39、 is our responsibility to do take responsibility for doing6.seizetheopportunitytodo（seizesb.bythe+n.）7.dealwithclimatechange（tackle/workout/address/handle）1.导致，由.造成由于2.考虑制定政策3.采取适当的行动4.限制二氧化碳的量5.5.做做.是我们的责任是我们的责任6.抓住机会做某事7.处理新词相知meltrelease habitablesustaintrendemissionhave an impact on/upon对有影响take.actions to do sth.采取行动做某事refer to参考be trapped in陷入新词相知along with连同一起result in 导致be responsible for 对负责任in search of 搜查in response to 作为.答复lead to 导致Thanks