How Life Began on the Earth武邑中学优质课.ppt

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1、人教版高一英语必修3Unit4ReadingHowLifeBeganontheEarth河北武邑中学郭丽梅八大行星你知道吗？(水星Mercury）（金星Venus）（火星Mars）(木星Jupiter)(天王星Uranus）(海王星Neptune）（地球Earth）(土星Saturn)Doyouwanttoknowmoreinformationabouttheuniverse?探索生命起源Doyouknowtheoriginoflifeontheearth?PanguseparatestheskyfromtheearthNvwamakeshumanbein

2、gsGodcreatedtheworldinsevendaysUnit4HowLifeBeganontheEarthPleaseretellthepassageaccordingtothevideo.oralpracticespeaking1.Thedevelopmentoftheearth(para1-2)TheBigBangTheBigBang(1)AftertheBigBang,whathappened?acloudofdustaviolentsolidglobeexplodedwithfireandrockproducedcarbon,nitrog

3、en,watervapour&gasesMadetheearth’satmosphereWaterappeared(4)Whatappearedontheearththen?(5)Whatdidthewaterform?oceansandseasappeared水Waterisfundamentaltothedevelopmentoflife.2.Thedevelopmentoflife(para3-4)smallplantsFirstearlyshellfishallsortsoffishgreenplantsonlandinsectsonlandN

4、extamphibiansonlandandinthewaterGreenplantsgrewintoforestsLaterreptilesonlanddinosaursonland(1)Whatlifedevelopedafterforestsappeared?Afterthatmammalsonland(2)Whatlifedevelopedafterdinosaurs?smallcleveranimals(3)Whatlifedevelopedaftermammals?Finally任务型学习matchthemainideawitheachpara

5、graph.Para.1A.Theformation(形成)oftheearth.Para.2B.Theimportanceofwaterforlife.Para.3C.Awidelyacceptedtheory–theBigBangPara.4D.Thearrivalofhumansandtheirimpactontheearth.Para.5E.Thedevelopmentofplantsandanimalsontheearth.Puttherightorderofdevelopmentoflifeintoatimeline1.Insectsandam

6、phibiansappeared.2.Dinosaursappeared.3.Theearthbecameasolidball.4.Smallplantsgrewonthewater.5.Reptilesappeared.6.Plantsbegantogrowondryland.7.Theearthwasacloudofdust8.Waterappearedontheearth9.Shellfishandotherfishappeared.10.Theuniversebeganwitha“BigBang”.11.Cleveranimalswithhands

7、andfeetappeared12MammalsappearedFillintheblanksaccordingtothetextAfterthe“BigBang”,theearthwasjustacloudofdust.It______________loudlywithfireandrock,whichwere___________toproducethewatervapour,_____________________andothergases.Thensmallplantsgrew.They_____________andfilledtheocea

8、nsandseaswithoxygen.explodedintim