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ModuleIIIUnit41.What’sthemeaningoftheword“Astronomy”?I.Warmingupthescienceofstars;thescientificstudyofstarsandplanets.2.Whatwordswillyouthinkofwhenwetalkaboutthistopic?star,planet,thesun/moon/earth,solarsystem恒星行星太阳月球地球太阳系3.Howmanyplanetsareinthesolarsystem?ScientistsnowthinkPlutoistoosmalltobecalledaplanet.TheSolarSystem11115.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)海王星商业之神和旅行之神爱与美之神该亚女神（大地、土壤等）战神天神农业之神宇宙之神海神MercuryVenusEarthMarsJupiterUranusSaturnNeptune6.PutthemincorrectorderonP25.Doyouknowtheirorigin?II.Pre-reading1.Haveyoueveraskedyourmother,“Mom,wheredoIcomefrom”?2.Nearlyeverybodyhasthisorthatpuzzles:Howdohumanbeingscomeintobeing?Howdoestheearthcomeintobeing?3.InChina,therearetwolegendsaboutthesepuzzles.Doyouknowthenames?盘古开天辟地女娲补天造人4.Inthewesternculture,whocreateseverythingintheworld?III.Fast-reading1.Doyoubelieveinsuchstories?Aretheybasedonscience?2.Inthisunit,we’lllearnsomethingmorescientific.3.What’sthetitleofthetext?4.Fromthetitle,wecanpredictthatthetextmaytellustheoriginoflifeontheearth.Paragraph1:Paragraph2:Paragraph3:Paragraph4:Paragraph5:D.AwidelyacceptedtheoryabouttheformationoftheuniverseC.TheformationoftheearthA.TheimportanceofwaterforlifeB.ThedevelopmentofplantsandanimalsontheearthE.ThearrivalofhumansandtheirimpactontheearthReadquicklyandmatchthemainideaofeachparagraphDetailedreadingThistextcanmainlydividedintotwostagesStage1:ThedevelopmentoftheearthStage2:Thedevelopmentoflife(para1—3)(para4—5)Stage1:Thedevelopmentoftheearth(1)AftertheBigBang,whatwastheearthlike?acloudofdustasolidglobeexplodedwithfireandrockproducedwatervapourandgases(2)Whathappenednext?(3)Whatdidthewatervapourandgasesform?theearth’satmosphereWaterappeared(4)Whatappearedastheearthcooleddown?waterisimportantforthebeginningoflifeontheearth.Whyiswatersoimportantforthebeginningoflife?Becausewaterallowedtheearthtodissolveharmfulgasesintooceansandseas.Stage2Thedevelopmentoflifesmallplantsappearsinwater1.Whatlifedevelopedafterwaterappeared?Shellfishandallsortsoffish2.Whatlifedevelopedinwaternext?greenplantsbegantogrowonlandinsectsappeared3.Whataboutthelifeonland?amphibiansonlandandinthewaterforests4.Whatlifedevelopednextonland?reptilesappeareddinosaurdeveloped5.Whatlifedevelopedafterforestsappeared?mammalsonland6.Whatlifedevelopedafterdinosaurs?smallcleveranimals7.Whatlifedevelopedaftermammals?1.Whoarethesmallcleveranimalswithhandsandfeet?2.Aretheytakingcareoftheearthwell?Why?Becausetheyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.Theearthmaybecometoohottoliveon.Theearthisbecominghotterandhotter!Canyoufillintheblanks?23456789101smallplantsinwatershellfishandallsortsoffishinsectsreptilesamphibiansmammalsdinosaurshumansplantsanimalsGreenplantsonlandforests1.Insectsandamphibiansappeared.3.Theearthbecameasolidball.5.Reptilesappeared.7.Theearthwasacloudofdust9.Shellfishandotherfishappeared.11.Cleveranimalswithhandsandfeetappeared2.Dinosaursappeared.4.Smallplantsgrewonthewater.6.Plantsbegantogrowondryland.8.Waterappearedontheearth10.Theuniversebeganwitha“BigBand”.12.Mammalsappeared.831091151741262Canyouputtheorderofdevelopmentoflifeintoatimeline?Ex.2onP27summary•Afterthe“bigbang”,theearthwasstilljustacloudof_______,it_______loudlywithfireandrock,whichwere_____toproducethe____________,watervapourandothergases.Then________begantoappearedontheearth.dustexplodedintimecarbondioxidewater____________inwaterareconsideredtobetheearliestlivesontheearth.TheO2theysuppliedencouragedthelivesof______________.Slowly_________grewonland,whichwerefollowedby__________likeinsects&________.Whentheplantsgrewinto______,______appeared.Then_______developedbutdisappearedlater,whichmadetheriseofatotallydifferentanimal,______,possible,andfinally_____spreadallovertheworld.shell--fishandfishamphibiansforestsreptilesdinosaursmammalhumansThesmallplantslandanimalsgreenplants1.Finishtheexercise1and2onpage632.Readthetextagainandfindoutyourdifficultpoints.Homework: