高中英语必修3第三单元ReadingUnit 4

HowLifeBeganontheEarth Reading Thetextmainlytellsusthe oftheearthandthe oflifeonit Scanning Readthepassagequicklyandfillintheblank formation development Para 1Theformation 形成 oftheearth Para 2Theimportanceofwaterforlife Para 3Awidelyacceptedtheoryabouttheformationoftheuniverse Para 4Thearrivalofhumansandtheirimpactontheearth Para 5Thedevelopmentofplantsandanimalsontheearth Matchthemainideawitheachparagraph Carefulreading Task1 ReadPara1 thenanswerthequestion Whichisthewidelyacceptedtheoryabouthowtheuniversebegan TheuniversebeganwithaBigBang Howtheearthbegan BigBang otherbodies stars atoms form creat creat Task2 Theformationoftheearth 1 AftertheBigBang whathappened acloudofdust aviolentsolidglobe theearthwas settleinto explodedwithfireandrock producedcarbon nitrogen watervapour gases 2 Whathappenednext 3 Whatdidthewatervapourandgasesform theearth satmosphere Waterappeared 4 Whatappearedontheearththen 5 Whatdidthewaterform oceansandseas Combineinto Explodewithfireandrocktoproducecarbon nitrogen watervapourandothergases dissolveharmfulgases BigBang acloudofdust asolidglobe atmosphere water oceansandseas Cooldown After bestill Howlifebeganontheearth madeitpossibleforlifetodevelop Task3 Thedevelopmentoflife extremelysmallplants First earlyshellfish Stage1 Thedevelopmentoflifeinwater manymillionsofyearslater oxygen multiply allsortsoffish greenplantsonland insectsonland Stage2 ThedevelopmentoflifeonlandNext amphibiansonlandandinthewater Greenplantsgrewintoforests Later reptilesonland dinosaursonland 1 Whatlifedevelopedafterforestsappeared Afterthat mammalsonland 2 Whatlifedevelopedafterdinosaurs smallcleveranimals Finallyabout2 6millionyearsago Humanscameintobeingandspreadallovertheworld Howlifebeganontheearth BigBang otherbodies stars Earth acloudof atoms dust Task4Summary asolid theearth s other4 Water tothedevelopmentoflife watervapour nitrogen carbon extremelysmall onthesurfaceofthewater globe gases atmosphere fundamental plants Between4 5and3 8billionyearsago Manymillionsofyearslater early andallsortsoffish greenplantsonland landanimals insects amphibians hugeanimals dinosaurs theriseof humanbeings shellfish reptiles mammals later afterthat formorethan140millionyears Whatproblemiscausedbyhumanbeings Humanbeingcausedglobalwarming Task5ReadPara5andanswerthequestion Post reading Task6 True T orFalse F Afterthe BigBang whattheearthwastobecomewascertain Whatitwastobecomewasuncertainuntilbetween4 5and3 8billionyearsagowhenthedustsettledintoasolidglobe F 主语从句 随后它会变成什么没人知道 知道38 45亿年前 这团尘埃才慢慢地形成了一个固体的球状物 Thereisnodoubtthattheshapeoftheearthwouldlastaftersettledintoasolidglobe Theearthbecamesoviolentthatitwasnotclearwhethertheshapewouldlastornot F 主语从句 地球开始变得激烈动荡 不知道这个固体形状是否会继续生存下去 Themostimportantthingforthedevelopmentoflifeistheappearanceofwater Whatisevenmoreimportantisthatastheearthcooleddown waterbegantoappearonthesurface T 主语从句 表语从句 更重要的是随着地球的冷却 地球的表面就开始出现了水 Atfirst theroleofwaterisveryobvious Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothedevelopmentoflife 水会对于生命的发展起关键作用 这一点在当时并不太明显 F 主语从句 Themaindifferencebetweentheearthandotherplanetsisthatthereiswaterontheearth WaterhadalsoappearedonotherplanetslikeMarsbut unliketheearth ithaddisappearedlater T Accordingtothetext humanbeingswoulddisappearintheend F Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved 在未来的千百万年中 生命能否在地球一延续将取决于这个问题能否得到解决 Wehaveonlyoneearth Speaking Whatshouldwedoforourearth Youcanusethefollowingwordsorphrasestohelpyou prevent from harmfulglobalwarmingcarbondioxideinturndependonasaresultthusatmos