Unit 4 全单元教案1.doc

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1、Unit4GlobalWarmingTeachingGoals:1.Talkaboutglobalwarmingandarousestudents’awarenessoftheimportanceofprotectingtheearth2.Developstudents’readingskills3.Learnaboutsomeusefulexpressionsandsentencepatterns4.Helpstudentsuse“it”foremphasisinasentencePeriod

2、1WarmingUpandpre-reading1.WatchafootagetakenfromtheHollywooddisastermovieThedayaftertomorrowandhavestudentsthinkaboutthecauseofthecatastropheinthemovie.2.ShowstudentssomepicturesandexplainwhatGreenhouseEffectis.3.阅读同步诠案课文背景提点(trueorfalse)①TheEarth’ss

3、urfacetemperaturehasrisenbyabout1degreeFahrenheitduringthepasttwodecades.(F)②Themaincauseofglobalwarmingishumanactivities,sotherewillbenowarmingwithouthumanontheearth.(F)13③Longtermwarmingistakingplaceontheearth,andwecandonothingtoslowit.(F)1.Havestu

4、dentstalk,howtoreducetheemissionofcarbondioxideandslowdownthecauseofglobalwarming?Thebestwayistocutdowntheburningoffossilfuelsandreplacethenon-renewableenergywithrenewableenergy.LightenergyHeatenergySoundenergySolarenergyWindenergyHotspringPlantwaste

5、Period2Readingandlanguagepoints1.Scanthearticleandanswerthefollowingquestions.①Wherecanyouprobablyfindsuchanarticle?(A)A.MagazineB.NewspaperC.Textbook②What’sthenameofthepublication?EarthCare③Whowrotethearticle?SophieArmstrong2.Studythetitleandpredict

6、whatthepassageisabout.Theearthisbecomingwarmer----Butdoesitmatter?DifferentopinionsWhoholdstheviewYes,itdoes. Dr.JaniceFoster13No,itdoesn’t. GeorgeHambley NeutralTheauthor*Theauthorprobablyagreesthat__D__.A.globalwarmingisactuallygoodformanB.weshould

7、donothingaboutglobalwarmingC.itwouldbeacatastropheiftheglobekeepsonwarmingD.alotremainstobefoundoutabout3.Dividethepassageintofourpartsandmatchthemainidea.4.ReadthetextmorecarefullyanddotheTrueofFalse.13①Thetemperatureinthelastcenturyincreasedbyashig

8、has5degrees.(F)②Theglobalwarmingisarandomratherthannaturalphenomenon.(F)③JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.(F)④Thecarbondioxidecontentintheairincreasedby70partspermillionfrom1957to1997.(F)⑤GeorgeHambleybelievesthat