人教新课标高中英语必修4 life began on the earth(reading) 下学期

Period1Whatsubjectsdoyoulearnatschool?ChineseMathematicsEnglishPoliticsHistoryGeographyPhysicsBiologyChemistryComputerP.EMusicArtStep1:Warmingup–brainstormingWhatdowethinkofassciencesubjects?astronomygeophysicsbiochemistrymedicinebiologyphysicsgeologymathematicschemistrySomesciencesubjectscombine2ormoreofothersubjects,suchasmedicine,biochemistry,geophysicsandastronomy.medicine=chemistry&biologybiochemistry=biology&chemistrygeophysics=geology&physicsastronomy=mathematics&physics…Whatdotheycombine?astronomybiochemistrygeophysicsmedicine__________thescientificstudyoftreatmentofdiseasesandinjures__________thestudyofthechemistryoflivingthings_________thescientificstudyoftheearth’satmosphere,oceansandclimate__________thescientificstudyofobjectsinspace,suchasplanets,stars,cometsand“blackholes”astronomymedicinebiochemistrygeophysicsFillintheblankscarefulpatientself-confidentpersistentbelogicalbeabletodrawconclusion…Whatarethemostimportantskillsweneedtoberealscientists?Step2Pre-reading1.Howdidtheuniversebegin?2.Howdidlifebeginontheearth?Therearedifferentlegends(传说)ofhowtheuniverseandlifebeganindifferentcultures:InChineseculture…PanguseparatedthetheskyfromtheearthTheGoddessNuwamendedtheheavenandcreatedhumanbeingsInwesternculture:GodcreatedtheworldinsevendaysDoyouknowwhatascientificideais?1.TheuniversebeganfromtheBigBang.2.Lifefirstbeganintheseaontheearth.3.LifewasbroughttotheearthbyETfromouterspace.•1.What’sthemainideaofthetext?•2.Howmanypartscanthetextbedividedinto?What’sthemainideaforeachpart?Step3:ReadingFast-reading1.What’sthemainideaofthetext?Howlifebeganontheearth.2.Howmanypartscanthetextbedividedinto?Part1(para1)Part2(para2&3)Part3(para4)Thedevelopmentofanimalsandplants.Watermadeitpossibleforlifebegintodevelop.Humansspreadallovertheearthbuttheyarenottakegoodcareofit.Stage1:Thedevelopmentoftheearth(1)AftertheBigBang,whathappened?acloudofdustaviolentsolidballexplodedwithfireandrockproducedwatervapourandgases(2)Whathappenednext?(3)Whatdidwatervapourandgasesmake?theearth’satmosphereWaterappeared–importantforthebeginningoflifeontheearth(4)Whatappearedontheearththen?•1.Howdidwatercomeintobeingontheearth?•2.Whatisthesignificanceofthepresenceofwaterontheearth?Theexplosionoftheearthproducedwatervapour,whichturnedintowaterwhentheearthcooleddown.Itallowedtheearthtodissolveharmfulgasesintooceansandseas.Careful-readingarrivalofsmallplantsinwater(1)Whatlifedevelopedafterwaterappeared?earlyshellfishStage2:ThedevelopmentoflifeinwaterallsortsoffishStage2:Thedevelopmentoflifeinwater(2)Whatlifedevelopedinwaternext?greenplantsonlandinsectsonland(1)Whatlifedevelopedafterthelifeinwater?Stage3:ThedevelopmentoflifeonlandamphibiansonlandandwaterforestsStage3:Thedevelopmentoflifeonland(2)Whatlifedevelopednextonland?reptilesonlanddinosaursonlandStage3:Thedevelopmentoflifeonland(3)Whatlifedevelopedafterforestsappeared?mammalsonland(4)Whatlifedevelopedafterdinosaurs?Stage3:ThedevelopmentoflifeonlandhumanscameintobeingStage4:Thedevelopmentofhumans(2)Whatlifedevelopedaftermammals?Theydevelopednewmethodsofgrowingfood,hunting,andmovingaround.1.Whatdidhumansdevelop?Theyareputtingtoomuchcarbondioxideintotheatmosphere.2.Whatproblemarehumanscausing?Step4Comprehending1.Whywastheearthdifferentfromotherplanets?2.Whywaslifeabletodevelopontheearthbutnotonotherplanets?3.Whywasitnecessaryforplantstogrowbeforeanimals?4.Whatproblemiscausedbyhumanbeings?A.B.Thewaterremained.B.Theearthdidnothaveharmfulgasesinitsatmosphere.B.Plantsprovidedoxygenforanimalstobreathe.B.Theycauseglobalwarming.Puttheorderofdevelopmentoflifeintoatimeline.A.insectsandamphibiansappearB.asolidballC.reptilesappearD.acloudofdustE.shellfishandotherfishappearF.dinosaursappearG.smallplantsgrowonthewaterH.plantsbegintogrowondrylandI.presenceofwaterJ.mammals(includinghumans)appearDBIGEHACFJDiscussionWhyisitwronginfilmsandstoriestoshowdinosaursandpeopletogether?Dinosausdiedoutlongbeforehumanbeingsdevelopedontheearth.Conlidation(classwork)CompletethepassageaccordingtothetextTheexplosionoftheearthproduced____________,whichturnedintowaterwhentheearthcooleddown.Waterallowedtheearthto_______________________intotheoceansandseas.Thatmadeitpossibleforlifetobegintodevelop.The_______________________encouragedthedevelopmentofearlyshellfishandallsortsoffish.Manymillionsofyearslater____________________begantoappearonland.Laterlandanimalsappeared.Somewereinsects.Others,called___________,wereabletoliveonlandaswellasinthesea.watervapourdissolveharmfulgasesarrivalofsmallplantsthefirstgreenplantsamphibiansWhentheplantsgrewintoforests,_______appearedforthefirsttime.Later,_________developed.Theybecamethemostimportantanimalsontheearthformillionsofyears.Aftertheydisappeared,__________becamemoreimportant.Theywerethelastgroupofanimalsandtheyweredifferentbecausethey___________________fromwithintheirbodies.Smallcleveranimals,withhandsandfeet,__________________allovertheearth.Astimewentby,theycoveredtheearthandhavebecomethemostimportantanimalsontheplanet.reptilesdinosaursmammalsproducedtheiryoungappeareda