人教新课标必修三第四单元READING课件.ppt

Unit4,Astronomy:,thescienceofthestars,会昌中学高一英语备课组刘强2013.4.2,solarsystem太阳系,Sun,Venus,Mercury,Mars,Jupiter,Saturn,Earth,Pluto,Neptune,Uranus,ButscientistsnowthinkPlutoistoosmalltobecalledaplanet.,Pre-reading,Doyouknowhowourlifebeganontheearth?Doyouknowanyancientideaaboutthebeginningoftheuniverse?,ChineseLegends,Panguseparatestheskyfromtheearth.,女娲补天,Legend:TheGoddessNuwamendedtheheavenandcreatedhumanbeingsfromtheclay(粘土).,ReligiousBeliefs,AccordingtoBible,Godcreatedtheworldinsevendays.,Day1:GodcreatedDayandNight.,Day2:Godcreatedsky.,Day3:Godcreateddrylandtheearth,andseas.,Day4:Godcreatedtowgreatlights(thesun,themoon)andstars.,Day5:Godcreatedlivingthingsintheairandsea.,Day6:Godcreatedthelandanimalsandthefirstman.,Day7:GodrestedandcalledthisdayHoly.,HOWLIFEBEGANONTHEEARTH?,Reading,Scanning,Task1:Scanthepassagequicklytofindoutthemainideaofeachparagraph.,Choosethemainideaforeachparagraph()Thearrivalofhumansandtheirimpactontheearth.()Theformationoftheearth.()Thedevelopmentofplantsandanimalsontheearth.()Awidelyacceptedtheoryabouttheformationoftheuniverse.()Theimportanceofwaterforlife.,5,4,2,1,3,（）AInsectsandamphibiansappeared.（）BDinosaursappeared.（）CTheearthbecameasolidball.（）DSmallplantsgrewonthewater.（）EReptilesappeared.（）FPlantsbegantogrowondryland.（）GTheearthwasacloudofdust.（）HWaterappearedontheearth.（IShellfishandotherfishappeared.（）JTheuniversebeganwitha“BigBang”.（）KCleveranimalswithhandsandfeetappeared.（）LMammalsappeared.,5,10,6）,2,9,4,8,3,7,1,Task2:Puttheorderofdevelopmentoflifeintoatimeline.,12,11,Passagestructure,Mainbody,Para1:,Para2:Para3:Para4:,Para5:,Awidelyacceptedtheoryabouttheformationoftheuniverse.,Theformationoftheearth.,Theimportanceofwaterforlife.,Thedevelopmentofplantsandanimalsontheearth.,Thearrivalofhumansandtheirimpactontheearth.,Readthepassagecarefullyandanalyseitsstructure:,earth,atmosphereandwater,lifedevelopment,Humanbeings,DetailedReading,Thedevelopmentoftheearth,Stage1:Thedevelopmentoftheearth,(1)AftertheBigBang,whathappened?,acloudofdust,aviolentsolidglobe,explodedwithfireandrock,producedcarbon,nitrogen,watervapour&gases,(2)Whathappenednext?,(3)Whatdidthewatervapourandgasesform?,theearthsatmosphere,Waterappeared,(4)Whatappearedontheearththen?,(5)Whatdidthewaterform?,oceansandseas,Thedevelopmentoflife,extremelysmallplants,First,earlyshellfish,Stage1:Thedevelopmentoflifeinwater,allsortsoffish,greenplantsonland,insectsonland,Stage2:ThedevelopmentoflifeonlandNext,amphibiansonlandandinthewater,GreenplantsgrewintoforestsLater,reptilesonland,dinosaursonland,(1)Whatlifedevelopedafterforestsappeared?,Afterthat,mammalsonland,(2)Whatlifedevelopedafterdinosaurs?,Postreading,Afterreadingthepassage,discussthefollowingquestions.,1.Whywastheearthdifferentfromtheotherplanets?,2.Whyisitwrongtoshowfilmswithdinosaursandpeopletogether?,Becausethewaterremainedontheearth.,Becausedinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth.,Postreading,Afterreadingthepassage,discussthefollowingquestions.,3.Whatproblemiscausedbyhumanbeings?,Humanbeingscausesglobalwarming.,Letsreviewtheevolutionoflifeontheearth.,Afterthe“BigBang”,theearthwasfullofwater.,Originalcellsappearedintheocean.,Thecellsinthewaterbegantoseparate.Marineanimalscameintobeing.,Someanimals(amphibian&insects)cametoland.,Reptileappeared.,dinosaurs,Mammals,Manhadevolvedfromapes.,Theydevelopednewmethodsofgrowingfood,huntingandmovingaround.Astimewentbytheycoveredtheearthandhavebecomethemostimportantanimalsontheplanet.,Wearemakingtheworldbetter.,Wearemakingtheworldworse.,A,B,Discussion,developednewmethodsofgrowingfood,(1)Whathumansdeveloped?,developednewmethodsofhunting,developednewmethodsofmovingaround,Greenhouseeffect,(2)Buttheyarenottakingcareoftheearthverywell.Whatproblemarehumanscausing?,puttingcarbondioxideintotheatmosphere,theearthmaybecometoohot,Asastudent,whatlittlethingscanwedofortheearth?,Discussion,solarenergy,planttrees,recyclerubbish,preventdesertification,savewater,purifyair,Whetherlifewillcontinueontheeart