人教版高中英语必修三课件 unit4 Reading2

Unit4solarsystem太阳系SunMarsJupiterSaturnEarthPlutoNeptuneUranusButscientistsnowthinkPlutoistoosmalltobecalledaplanet.Thenamesofeightplanets.•Mercury•Venus•Earth•Mars•Jupiter•Saturn•Uranus•Neptune1)水星2)金星3)地球4)火星5)木星6)土星7)天王星8)海王星Nuwamadehumans.Panguseparatestheskyfromtheearth.Otherlegendsaboutthebeginningofuniverse.ReadingHOWLIFEBEGANONTHEEARTHSkimmingWhat’sthemainideaofthepassage?Thetextmainlytellsusthe______oftheearthandthe___________oflifeonit.formationdevelopmentConcludethemainideaofeachparagraph.1)Awidely______aboutthe_____oftheuniverse.2)Theformationofthe______.3)The__________ofwaterforlife.4)Thedevelopmentof______and_______ontheearth.5)Thearrivalof_______andtheir_____ontheearth.theoryoriginearthimportanceplantsanimalshumansinfluence/effectScanning1.Whatistheoriginalearth’satmospheremadeupof?2.Whatisthefundamentaltothedevelopmentoflife,andwhy?3.Whichkindoflife-beingfirstappearedontheearth,plantsoranimals?IntensivereadingReadthepassagequicklytoanswerthefollowingquestions.carbon,nitrogen,watervapour,andothergases2.whatisfundamentaltothedevelopmentoflife?Water.Becauseitallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.1.Whatistheoriginalearth’satmospheremadeupof?3.Whichkindoflife-beingfirstappearedontheearth,plantsoranimals?Why?Atfirst,smallplantsbegantoappearonthesurfaceofthewater,andtheyproduceoxygen,whichencouragedthelaterdevelopmentofearlyshellfishandallsortsoffish.Canyoufillintheblanks?23456789101smallplantsinwatershellfishandallsortsoffishinsectsreptilesamphibiansmammalsdinosaurshumansplantsanimalsGreenplantsonlandforestsLetsreviewtheevolutionoflifeontheearth.1.BigBang2.acloudofdust3.Asolidglobe4.explodedwithfireandrock5.producethewatervapour,carbondioxide---atmosphereHowdidtheearthcomeintobeing?6.cooleddown7.waterappeared8.Dissolvedharmfulgases&acidWehaveonlyoneearth!!!Wearemakingtheworldbetter.Wearemakingtheworldworse.ABDiscussiondevelopednewmethodsofgrowingfood(1)Whathumansdeveloped?developednewmethodsofhuntingdevelopednewmethodsofmovingaround(2)Buttheyarenottakingcareoftheearthverywell.Whatproblemarehumanscausing?puttingcarbondioxideintotheatmospheretheearthmaybecometoohotLet’stakepartintheactivitiestosavetheearth!Usethefollowingwordsorphrasestohelpyou:prevent…from…harmfulglobalwarmingcarbondioxideinturndependonasaresultatmosphereHomework•Finishtheexercisesonpage28•Writeashortpassageabouthowtheearthcameintobeing