高一英语必修三unit4reading名师优质课获奖市赛课一等奖课件

Unit4readingHowLifeBeganontheEarth第1页Panguseparatestheskyfromtheearth第2页TheGoddessNvwamendedtheheavenandcreatedhumanbeings

fromtheclay(粘土).第3页Godcreatedtheworldinsevendays第4页

matchthemainideaofeachparagraphParagraph1:Paragraph2:Paragraph3:Paragraph4:TheimportanceofwaterforlifeThedevelopmentofplantsandanimalsontheearthTheformationoftheearthAwidelyacceptedtheoryabouttheformationoftheuniversedcabe.Thearrivalofhumansandtheirimpactontheearth

Paragraph5:e第5页

Detailedreading

ThistextcanmainlydividedintotwostagesStage1:ThedevelopmentoftheearthStage2:Thedevelopmentoflife(para1—3)(para4—5)第6页Stage1:Thedevelopmentoftheearth(1)AftertheBigBang,whatwastheearthlike?

acloudofdust

asolidglobe第7页explodedwithfireandrock

producedwatervapourandgases(2)Whathappenednext?第8页(3)Whatdidthewatervapourandgasesform?theearth’satmosphere第9页Waterappeared(4)Whatappearedastheearthcooleddown?waterisimportantforthebeginningoflifeontheearth.

第10页

Whyiswatersoimportantforthebeginningoflife?

Becausewaterallowedtheearthtodissolveharmfulgasesintooceansandseas.？第11页1.BigBang2.acloudofdust3.Asolidglobe4.explodedwithfireandrock5.producethewatervapour,carbondioxide---atmosphereHowdidtheearthcomeintobeing?

Repeat第12页6.cooleddown7.water

appeared8.Dissolvedharmfulgasesandacid第13页Stage2Thedevelopmentoflife第14页smallplantsappearsinwater1.Whatlifedevelopedafterwaterappeared?第15页Shellfishandallsortsoffish2.Whatlifedevelopedinwaternext?第16页

greenplantsbegantogrowonland

insectsappeared3.Whataboutthelifeonland?第17页amphibiansonlandandinthewaterforests4.Whatlifedevelopednextonland?第18页

reptilesappeared

dinosaurdeveloped5.Whatlifedevelopedafterforestsappeared?第19页mammalsonland6.Whatlifedevelopedafterdinosaurs?第20页smallcleveranimals7.Whatlifedevelopedaftermammals?第21页

1.Whoarethesmallcleveranimalswithhandsandfeet?

2.Aretheytakingcareoftheearthwell?Why?

?第22页

Becausetheyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.Theearthmaybecometoohottoliveon.第23页Canyoufillintheblanks?23456789101smallplantsinwatersellfishandallsortsoffish

insectsreptilesamphibiansmammalsdinosaurshumansplantsanimalsGreenplantsonlandforests第24页1.Insectsandamphibiansappeared.3.Theearthbecameasolidball.5.Reptilesappeared.7.Theearthwasacloudofdust9.Shellfishandotherfishappeared.11.Cleveranimalswithhandsandfeetappeared2.Dinosaursappeared.

4.Smallplantsgrewonthewater.6.Plantsbegantogrowondryland.8.Waterappearedontheearth10.Theuniversebeganwitha“BigBand”.12.Mammalsappeared.831091151741262Canyouputtheorderofdevelopmentoflifeintoatimeline?第25页summaryAfterthe“bigbang”,theearthwasstilljustacloudof_______,it_______loudlywithfireandrock,whichwere_____toproducethe_________,watervapourandothergases.Then________begantoappearedontheearth.dustexplodedintimecarbonwater第26页____________inwaterareconsidered

tobetheearliestlivesontheearth.TheO2

theysuppliedencouragedthelivesof____

__________.Slowlygreenplantsgrewon

land,whichwerefollowedby__________

likeinsects&________.Whentheplantsgrewinto______,______appeared.Then_______developedbutdisappearedlater,whichmadetheriseofatotallydifferentanimal,______,possible,andfinally_____spreadallovertheworld.shell--fishandfishamphibiansforestsreptilesdinosaursmammalhumansThesmallplantslandanimals第2