新人教必修三 Unit 4 Astronomy-The Science of The Stars[阅读课件]

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1、WelcomeUnit4Astronomy:thescienceofthestarssolarsystem太阳系SunVenusMercuryMarsJupiterSaturnEarthPlutoNeptuneUranusButscientistsnowthinkPlutoistoosmalltobecalledaplanet.Pre-readingDoyouknowhowourlifebeganontheearth?Doyouknowanyancientideaaboutthebeginningoftheuniverse?BigBangHOWLIFEBEGANONTHEEART

2、H?Reading1.Whatistheoriginalearth’satmospheremadeupof?2.Whatisthefundamentaltothedevelopmentoflife?3.Whichkindoflife-beingfirstappearedontheearth,plantsoranimals?4.MainideaofeachparagraphScanningScanthepassagequicklytoanswerthefollowingquestions.carbon,nitrogen,watervapour,andothergases2.whati

3、sfundamentaltothedevelopmentoflife?Water1.Whatistheoriginalearth’satmospheremadeupof?3.Whichkindoflife-beingfirstappearedontheearth,plantsoranimals?Why?Atfirst,smallplantsbegantoappearonthesurfaceofthewater,theyproduceoxygen,whichencouragedthelaterdevelopmentofearlyshellfishandallsortsoffish.4

4、.Choosethemainideaforeachparagraph()Thearrivalofhumansandtheirimpactontheearth.()Theformationoftheearth.()Thedevelopmentofplantsandanimalsontheearth.()Awidelyacceptedtheoryabouttheformationoftheuniverse.()Theimportanceofwaterforlife.54213PassagestructureMainbodyPara1:Para2:Para3:Para4:Para5:Aw

5、idelyacceptedtheoryabouttheformationoftheuniverse.Theformationoftheearth.Theimportanceofwaterforlife.Thedevelopmentofplantsandanimalsontheearth.Thearrivalofhumansandtheirimpactontheearth.Readthepassagecarefullyandanalyseitsstructure:earth,atmosphereandwaterlifedevelopmentHumanbeings（）Insectsan

6、damphibiansappeared.（）Dinosaursappeared.（）Theearthbecameasolidball.（）Smallplantsgrewonthewater.（）Reptilesappeared.（）Plantsbegantogrowondryland.（）Theearthwasacloudofdust.（）Waterappearedontheearth.（）Shellfishandotherfishappeared.（）Theuniversebeganwitha“BigBang”.（）Cleveranimalswithhandsandfeetapp

7、eared.（）Mammalsapeared.5106）2948371DetailedreadingPuttheorderofdevelopmentoflifeintoatimeline.1211PostreadingAfterreadingthepassage,discussthefollowingquestions.1.Whywastheearthdifferentfromtheotherplanets?2.Whyisitwrongtoshowfilmswithd