高中英语unit4 astronomythe sceience of the stars人教版必修三上课用.ppt

unit4reading howlifebeganontheearth panguseparatestheskyfromtheearth thegoddessnuwamendedtheheavenandcreatedhumanbeingsfromtheclay 粘土 godcreatedtheworldinsevendays whathaveyouseenfromthevideo bigbanguniverseacloudofdustsolidglobeatmospherewaterplantscellsshellfishfishinsectsamphibiansreptilesdinosaursmammalsapes monkeys humans listentothetapeandmatchthemainideaofeachparagraph paragraph1 paragraph2 paragraph3 paragraph4 theimportanceofwaterforlifethedevelopmentofplantsandanimalsontheearththeformationoftheearthawidelyacceptedtheoryabouttheformationoftheuniverse d c a b e thearrivalofhumansandtheirimpactontheearth paragraph5 e detailedreadingthistextcanmainlydividedintotwostages stage1 thedevelopmentoftheearthstage2 thedevelopmentoflife para1 3 para4 5 stage1 thedevelopmentoftheearth 1 afterthebigbang whatwastheearthlike acloudofdust asolidglobe explodedwithfireandrock producedwatervapourandgases 2 whathappenednext 3 whatdidthewatervapourandgasesform theearth satmosphere waterappeared 4 whatappearedastheearthcooleddown waterisimportantforthebeginningoflifeontheearth whyiswatersoimportantforthebeginningoflife becausewaterallowedtheearthtodissolveharmfulgasesintooceansandseas stage2thedevelopmentoflife smallplantsappearsinwater 1 whatlifedevelopedafterwaterappeared shellfishandallsortsoffish 2 whatlifedevelopedinwaternext greenplantsbegantogrowonland insectsappeared 3 whataboutthelifeonland amphibiansonlandandinthewater forests 4 whatlifedevelopednextonland reptilesappeared dinosaurdeveloped 5 whatlifedevelopedafterforestsappeared mammalsonland 6 whatlifedevelopedafterdinosaurs smallcleveranimals 7 whatlifedevelopedaftermammals 1 whoarethesmallcleveranimalswithhandsandfeet 2 aretheytakingcareoftheearthwell why becausetheyareputtingtoomuchcarbondioxideintotheatmosphere whichpreventsheatfromescapingfromtheearthintospace theearthmaybecometoohottoliveon canyoufillintheblanks 2 3 45 6 78910 1smallplantsinwater sellfishandallsortsoffish insects reptiles amphibians mammals dinosaurs humans plants animals greenplantsonland forests 1 insectsandamphibiansappeared 3 theearthbecameasolidball 5 reptilesappeared 7 theearthwasacloudofdust9 shellfishandotherfishappeared 11 cleveranimalswithhandsandfeetappeared 2 dinosaursappeared 4 smallplantsgrewonthewater 6 plantsbegantogrowondryland 8 waterappearedontheearth10 theuniversebeganwitha bigband 12 mammalsappeared 8 3 10 9 11 5 1 7 4 12 6 2 canyouputtheorderofdevelopmentoflifeintoatimeline groupwork describethevideo theearthisbecominghotterandhotter whatcanwedotopreventtheearthfrombecominghotterandhotter eg whatwecandoistosaveenergy whatwecandoisto discussion summary afterthe bigbang theearthwasstilljustacloudof it loudlywithfireandrock whichwere toproducethe watervapourandothergases then begantoappearedontheearth dust exploded intime carbon water inwaterareconsideredtobetheearliestlivesontheearth theo2theysuppliedencouragedthelivesof slowlygreenplantsgrewonland whichwerefollowedby likeinsects whentheplantsgrewinto appeared then developedbutdisappearedlater whichmadetheriseofatotallydifferentanimal possible andfinally spreadallovertheworld shell fishandfish amphibians forests reptiles dinosaurs mammal humans thesmallplants landanimals 1 finishtheexercise1and2onpage632 readthetextagainandfindoutyourdifficultpoints homework thankyou 1 howwastheearthdifferentfromtheotherplanets comprehensionquestions 2 whatmade