人教版必修三unit4_astronomy-reading课件VIP免费

Unit4Astronomy:thescienceofthestarsInoursolarsystemeightplanetscirclearoundthesun.Whatarethey?Canyoumatchthenameswiththeplanets?Lookatthepictureandmatchthenameswiththeplanets.WarmingupMercuryVenusEarthMarsJupiterSaturnUranusNeptune金星地球水星土星木星天王星海王星火星Pre-readingPre-readingTheoriginoflifeontheearthisaquestionthatinterestsastronomers.whatdoyouknowaboutit?Eachreligionandculturehasitsownideasabouthowlifebeganonearth.Whatdoyouknowaboutit?Doyoubelievethepassagetellyouthetruthaboutthebeginningoflife?Why?ThebeginningofthelifePanguseparatedNvwacreatedGodcreatedtheskyhumanstheworld盘古开天女娲造人上帝创世论Chinalegend:PanguseparatestheskyfromtheearthThedevelopmentofthelifebreathwindsandcloudsvoicethunderlefteyethesunrighteyethemoonbloodtheriversveinstheroadsChinalegend:TheGoddessNuwamendedtheheavenandcreatedhumanbeingsfromtheclay(粘土).ReligiousBeliefsAccordingtoBible,Godcreatedtheworldinsevendays.Day1:GodcreatedDayandNight.Day2:Godcreatedsky.Day3:Godcreateddryland—theearth,andseas.Day4:Godcreatedtowgreatlights(thesun,themoon)andstars.Day5:Godcreatedlivingthingsintheairandsea.Day6:Godcreatedthelandanimalsandthefirstman.Day7:GodrestedandcalledthisdayHoly.ReadingHowLifeBeganontheEarthReadingReadingHowlifebeganontheearthReadthetextquicklyandwritedownthemainideaforeachparagraph.While-readingWhile-readingMainideaofeachparagraphParagraph1:Paragraph2:Paragraph3:Paragraph4:a.Theimportanceofwaterforlifeb.Thedevelopmentofplantsandanimalsontheearthc.Theformationoftheearthd.Awidelyacceptedtheoryabouttheformationoftheuniversedcabe.ThearrivalofhumansandtheirimpactontheearthParagraph5:eReadtheparagraph2and3carefullyandthinkaboutHowtheearthcomeintobeing?.While-readingWhile-reading1.BigBang2.acloudofdust3.Asolidglobe4.explodedwithfireandrock5.producethewatervapour,carbondioxide---atmosphereHowdidtheearthcomeintobeing?Para2,36.cooleddown7.waterappeared8.DissolvedharmfulgasesandacidThedevelopmentoflifePara4,5extremelysmallplantsFirstearlyshellfishStage1:ThedevelopmentoflifeinwaterallsortsoffishgreenplantsonlandinsectsonlandStage2:ThedevelopmentoflifeonlandNextamphibiansonlandandinthewaterGreenplantsgrewintoforestsLaterreptilesonlanddinosaursonland(1)Whatlifedevelopedafterforestsappeared?Afterthatmammalsonland(2)Whatlifedevelopedafterdinosaurs?smallcleveranimals(3)Whatlifedevelopedaftermammals?Finally•Workinpairs.Puttheorderofdevelopmentoflifeintoatimeline.While-readingWhile-reading1073849615212111.Insectsandamphibiansappeared.3.Theearthbecameasolidball.5.Reptilesappeared.7.Theearthwasacloudofdust.9.Shellfishandotherfishappeared.11.Cleveranimalswithhandsandfeetappeared.2.Dinosaursappeared.4.Smallplantsgrewonthewater.6.Plantsbegantogrowondryland.8.Waterappearedontheearth.10.Theuniversebeganwitha"BigBang".12.Mammalsappeared.1.Whywastheearthdifferentfromtheotherplanets?Becausewaterremainedontheearth.2.Whydidtheplantsgrowbeforetheanimalscame?Becauseplantsprovidedoxygenforanimalstobreathe.3.Whyisitwrongtoshowfilmswithdinosaursandpeopletogether?Becausedinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth.4.Thereusedtobenineplanetsinthesolarsystem.Recentlyscientistshavedecidedthatoneofthemcannolongerbeconsideredaplanet.Doyouknowthenameofthatplanet?Doyouknowwhytheyremovedit?ThenameisPluto.Scientistsnowthinkitistoosmalltobecalledaplanet.5.Whatproblemiscausedbyhumanbeings?Humanbeingscauseglobalwarming.Afterthe,theearthwasjust.Slowly,itbegantocombineintomovingaroundthesun.Afteritexplodedloudly,theexplosionproduced,_________________________________andothergases.“BigBang”acloudofdustcarbon,nitrogenthewatervapourasolidglobeRetellAstheearthcooleddown,_____begantoappearonitssurface.Becauseofwaterandotherusefulgases,andlater___________________________appeared.Manymillionsofyearslater,begantogrow,whichledtotheappearanceof.watersmallplantsgrewshellfishandotherfishinsectsandamphibiansthefirstplantsonlandWhentheplantsgrewintoforests,.Later,.Whentheydisappeared,becamemoreimportant.Atlast,________________havebecamethemostimportantanimalsontheplanet.reptilesappeareddinosaursdevelopedmammalshumanbeingsGroupDiscussion1.Whatproblemsarecausedbyhumanbeings?2.Howtosolvetheseproblems?Homework1.Findoutlanguagepointsandnounclausesinthereadingpassage.Discussandanalysethem.2.Writing:Rewritethepassageanduseasmanylanguagepointsandnewwordsaspossible.Wehaveonlyoneearth!Weshouldtakecareoftheearth!