必修3 unit3( reading ) how life began on the earth

Warmingup,Whatarethenamesoftheeightplanetsthatcircleoursun?,海王星Saturn,水星Uranus,金星Venus,地球Earth,火星Mars,木星Mercury,土星Jupiter,天王星Neptune,AQuizGame,1.Howoldistheearth?A.About3.5billionyearsB.About4.5billionyearsC.About5.5billionyearsD.About6.5billionyears2._oftheearthsurfaceiscoveredbywater.A.20%B.30%C.50%D.70%,3.HowmanyplanetsarethereintheSolarSystem?A.6B.7C.8D.94.Whatisthetotalpopulationofhumansontheearth?A.About3.5billionB.About4.5billionC.About5.5billionD.About6.5billion,5.Howlongdoestherotation(自转)oftheearthtake?A.12hoursB.24hoursC.amonthD.365days6.Whichcontinentisthesmallest?A.AfricaB.NorthAmericaC.SouthAmericaD.Oceania7.OnwhatdayistheEarthdaycelebrated?A.April22B.May4C.August21D.November11,8.Whichoceanisthelargest?A.ThePacificOceanB.TheArcticOceanC.TheIndianOceanD.TheAtlanticOcean9.Whichcountryhasthelargestarea?A.CanadaB.ChinaC.RussiaD.U.S.A,Prediction,Lookatthepicture.Doyouknowthetopicofthisunit?,AncientChinesehadtheirownideasabouthowlifebeganontheearth.Doyouknowthesestories?Giveanexample,please.,Howlifebeganontheearth?,Panguseparatestheskyfromtheearth.,中国神话传说中有盘古开天地的说法。巨人盘古用一把利斧劈开混沌,将天地分开。死后,他的气息化成风和云,声音变成轰轰的雷声,左眼化为太阳,右眼化为月亮,手足与四肢变成大地的四极与五方的名山,血液化成江河,筋脉铺成道路,肌肉形成田地,须发成为星星,牙齿和骨骼化为金属、珍珠、玉石,汗水成为滋润万物生长的甘霖和雨露。,Nvwamadehumans.,Otherlegendsaboutthebeginningofuniverse.,TheBiblicalAccount,Day1:GodspokeandseparatedlightfromdarknesscreatingDayandNight.Day2:Godspokeandseparatedthewatercreatingskyandocean.Day3:Godspokeandcreateddryland.,Day4:Godspokeandcreatedthesun,moonandstars.Day5:Godspokeandcreatedlivingcreaturesintheairandsea.Day6:Godspokeandcreatedthelandanimalsandman.Day7:GodrestedandblessedthisdaycallingitHoly.,ReadingHOWLIFEBEGANONTHEEARTH,Whatsthewritingstyleofthetext?,A.Narrative记叙文B.Explanation说明文C.Essay散文,11111111111111111111111111111,111111111111111111111111111,Letsgettoknowhowlifebeganontheearth,Tasktwo:Readparagraph1-3quicklybyyourselves.,Afterthe“BigBang”,whathappenedontheearth?,Whoknowshowlifebeganontheearthexactly?A.Scientists.B.Astronomers.C.Noone.D.Aliens(外星人).2.Whywastheearthdifferentfromotherplanets?Itproducedalotofheat.B.Thewaterremained.C.Waterdisappeared.D.Itwastheoldestplanet.,3.Whywaslifeabletodevelopontheearthbutnotonotherplanets?Theearthhadasolidshape.B.Theearthdidnothaveharmfulgasesinitsatmosphere.C.Thewaterstayedontheearthbutnotonotherplanets.D.Theearthwasnottoohotandnottoocold.,Stage1:Howtheearthandwatercomeabout,(1)AftertheBigBang,whathappened?,acloudofdust,aviolentsolidball,explodedwithfireandrock,Producedcarbon,nitrogen,watervaporandgases,(2)Whathappenednext?,(3)Whatdidthewatervapourandgasesform?,theearthsatmosphere,Waterappearedwhichisimportantforthebeginningoflifeontheearth.,(4)Whatappearedontheearththen?,(5)Whatdidthewaterform?,oceansandseas,retellhowtheearthandwatercomeabout,BigBang,Acloudofdust,Asolidglobe,Explodedloudlywithfireandrock,carbon,nitrogen,watervaporandothergases,theearthsatmosphere,Theearthcooleddown,Waterappeared,Readparagraph4and5quickly,andfindouttheorderofdevelopmentoflifeontheearth,arrivalofsmallplantsinwater,Whatlifedevelopedafterwaterappeared?,earlyshellfishandallsortsoffish,Stage2:Thedevelopmentoflifeinwater,(2)Whatlifedevelopedonlandnext?,greenplantsonland,insectsonland,amphibiansonlandandinthewater,reptilesonland,dinosaursonland,(2)Whatlifedevelopedafterforestsappeared?,Howdoreptilesproduceyoung?,bylayingeggs,mammalsonland,(3)Whatlifedevelopedafterdinosaurs?,Howdomammalsproduceyoung?,bygivingbirthtobabyanimalsandproducingmilktofeedthem.,Thearrivalof_encouragedthe_ofearly_.Manymillionsofyearslater_begantoappear_.Later_appeared.Somewere_.Otherscalled_,wereabletoliveonlandsaswellas_.Whentheplantsgrewintoforests,_appearedforthefirsttime.Aftertheydisappeared,_becamemoreimportant.Theyweredifferentfromalllifeforms_,becausethey_youngfromwithintheirbodies.,development,shellfishandallsortsoffish,onland,landanimals,amphibians,dinosaurs,mammals,gavebirthto,smallplants,thefistgreenplants,insects,inthewater,inthepast,Howlifebeganontheearth,“BigBang”,otherbodies,_,stars,Earth:acloudof_,atoms,dust,Summary,asolid_,theearths_,other4._,Water:_tothedevelopmentoflife,watervapour,nitrogen,carbon,extremelysmall_onthesurfaceofthewater,globe,gases,atmosphere,fundamental,plants,early_andallsortsoffish,greenplantsonland,landanimals,i