How_life_began_on_the_earth_阅读课件(公开课)

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1、HowLifeBeganontheEarthDoyouknowhowlifebeganonearthisexplainedindifferentreligionsandcultures?PanguseparatestheskyfromtheearthGodcreatedtheworldinsevendaysSomelegendsaboutthebeginningofuniverse.Whatisthescientifictheoryaboutthebeginningoflifeontheearth?Tha

2、tisthetopicwearegoingtotalkabout.Followme,WewillgetitReadthetextquicklyandmatchthemainideaforeachparagraph.Task1:SkimmingWhile-readingPara.1Theformation(形成)oftheearth.Para.2Theimportanceofwaterforlife.Para.3Awidelyacceptedtheoryabouttheformationoftheunive

3、rse.Para.4Thearrivalofhumansandtheirimpactontheearth.Para.5Thedevelopmentofplantsandanimalsontheearth.Workinpairs:Puttheorderofdevelopmentoflifeintoatimelinefirstaccordingtoyourcommonsense,andthenaccordingtothereadingpassage.Task2:ScanningWhile-reading10

4、73849615212111.Insectsandamphibiansappeared.3.Theearthbecameasolidball.5.Reptilesappeared.7.Theearthwasacloudofdust.9.Shellfishandotherfishappeared.11.Cleveranimalswithhandsandfeetappeared.2.Dinosaursappeared.4.Smallplantsgrewonthewater.6.Plantsbegantogro

5、wondryland.8.Waterappearedontheearth.10.Theuniversebeganwitha"BigBang".12.Mammalsappeared.TheBigBangAcloudofdustCombineintoasolidballExplode…withfire&rock(produceH2O,CO2,O2,N2,othergases)atmosphereCooldownwaterappearedLifebegananddeveloped[,fΛndə'mentl]Wa

6、terwastobefundamentaltothedevelopmentoflife.Fishandshellfishamphibians[æm'fibiən]Amphibianscanliveinthewateraswellasonland.Reptilesproducedyounggenerallybylayingeggs['reptail]reptilesdinosaursMammals['mæməl]Mammalslikemonkeysgavebirthtoyoungbabyanimalsand

7、producedmilktofeedthem.humanbeingsTrue(T)orFalse(F).1.TheearthappearedbeforetheBigBanghappened.2.Theoriginalatmosphereconsistedofnitrogenandoxygen.3.Themaindifferencebetweentheearthandotherplanetsisthatthereiswaterontheearth.4.Lifebeganinwaterandthenonlan

8、d.FFTTDiscussingroups:5.Mammalsappearedbeforethedevelopmentofdinosaurs.6.Dinosaurscouldgivebirthtoyoungbabyanimalsandproducedmilktofeedthem.7.Humanbeingsproducetoomuchcarbondioxidewhichcausestheglobalwarmingontheear