人教版高中英语必修3-Unit4-reading(公开课)

ChineseLegends(传说)Panguseparatedtheskyfromtheearth.Hiswholebodythenturnedintoallkindsofthingsintheuniverse.盘古开天辟地第二页第二页，共22页。2.Trytoputtherightorderofdevelopmentoflifeontheearth?Ifyouwanttoknowmore,pleaseturntoPage25①②③④⑥⑦⑤第三页第三页，共22页。HowlifebeganontheEarth第四页第四页，共22页。Lookattitleandthepictures.Canyougetsomeinformationaboutwhatwewilllearnfromthetext?Thetextmaytellusthe___________oftheearthandthe___________oflifeonit.

Pre-readingPre-reading第五页第五页，共22页。FastreadingMatchthemainideawitheachparagraph.第六页第六页，共22页。Thedevelopmentofplantsandanimals

ontheearth.

Para.1Para.2Para.3Para.4Para.5Theformation(形成)oftheearth.Theimportanceofwaterforlife.Awidelyacceptedtheoryabouttheformationoftheuniverse.Thearrivalofhumansandtheirimpactontheearth.第七页第七页，共22页。CarefulreadingTaskone(para1)WhatisthewidelyacceptedtheoryinPara1?Theuniversebeganwitha"BigBang"thatthrowmatters...bodies.第八页第八页，共22页。acloudof_____BigBangasolid_______slowlycombinetheearth______downitexplodedloudlywith_____and_____theearth’s___________dustball/globefirerockatmospherecooledHowdidtheearthcomeintobeing(产生）?Tasktwo

(para2)第九页第九页，共22页。

Whyiswatersoimportantforthebeginningoflife?

paragraph3Becausewaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.第十页第十页，共22页。

Whatlifedevelopedafterwaterappeared?Paragraph4

smallplantsgreenplantsforestearlyshellfishandallsortsoffishinsectsandamphibiansreptilesdinosaursmammals第十一页第十一页，共22页。About2.6millionyearsagoNowHumansproducetoomuchcarbondioxide,makingtheearthtoohottolivein.Para5Afterthecleveranimals(humans)becameimportantontheearth,whathappened?Answerquestion第十二页第十二页，共22页。TasktwoPleasereadthetextagain,thenputtheorderofthesesentences.(exercise2,page27)□Insectsandamphibiansappeared□Theearthbecameasolidball□Reptilesappeared.□Theearthwasacloudofdust.□Shellfishandotherfishappeared.□Cleveranimalswithhandsandfeetappeared.10346512第十三页第十三页，共22页。□Dinosaursappeared.□Smallplantsgrewonthewater.□Plantsbegantogrewontheearth.□Waterappearedontheearth.□Theuniversebeginwitha“bigbang”□Mammalsappeared.7891211第十四页第十四页，共22页。BigBang4.5-3.8billionmanymillionyearslater

2.6millionNow

⊕⊕⊕●●●●●●●●★Time

Events

BigBangdustsolidglobewaterappearssmallplantsshellfishandfishplantsgrowonthelandinsectsandamphibians

reptiles

dinosaurmammals

cleveranimalshumanslifeearth

第十五页第十五页，共22页。1234567Let’scheckwhetherweputtherightorderatfirst.Areyouright?①②③④⑤⑥⑦第十六页第十六页，共22页。SumupThetextmaytellusthe___________oftheearthandafter________appear,the___________oflifeoneafteranotheronit.

formation

water

development第十七页第十七页，共22页。Inthelastparagraph,weknowhumansfaceseriouslyglobalwarmingproblem,whichisthreateningourexistence.Canyouwritesomethingtocallonustoprotectourenvironment?Discussion

第十八页第十八页，共22页。Theearthweliveinisbecomingmoreandmoreterrible,sowemusttakemeasurestodealwithit.

Firstly:Secondly:Thirdly:

Wehopetheenvironmentwillbecomemoreandmorebeautiful.Sample

第十九页第十九页，共22页。Theearthweliveinisbecomingmoreandmoreterrible,sowemusttakemeasurestodealwithit

Firstly,thegovernmentshouldpasslawstopreventpeopleandfactoriesfrompollutingtheenvironment.Secondly,everyoneshouldrealizetheimportanceoftheproblemandtrytheirbesttoprotecttheenvironmentandfightagainstpollution.Besides,it’sagoodideastoplanttreestoimprovetheenvironment.

Wehopeourearthwillbecomemoreandm