新课标人教版高中英语必修3Unit 4 AstronomyReading阅读课件.ppt

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1、Unit4Astronomy:thescienceofthestarsastronomerHowlifebeganontheearth?进化(MTV).flvQuizonearthlife.1Doyouknowwhichoneisnotamammal哺乳动物?2Snakesandtortoisesbelongto_____,whilefrogsandtoadsbelongto__.Aamphibians两栖动物Breptiles爬行动物AkoalaWaterAirLife?3HowLifeBeganontheEarth：Whichca

2、mefirst?HowLifeBeganontheEarthReading.mp3AwidelyacceptedtheoryabouttheformationoftheuniverseTheformationoftheearthTheimportanceofwaterforlifeThedevelopmentofplantsandanimalsontheearthThearrivalofhumansandtheirimpactontheearthMatchthemainideaofeachparagraph.FastreadingTr

3、ueorfalse1.Accordingtoawidelyacceptedtheory,theuniversebeganwitha“BigBang”,afterwhichtheearthwasstillacloudofdustforseveralbillionyears.2.Astheearthcooleddown,waterbegantoappearonitssurface.3.Waterallowedtheearthtodissolveharmfulgasesandacids,anditonlyappearedontheearth

4、.4.Asformammals,theyproducedyounggenerallybylayingeggs.5.Cleveranimalswithhandsandfeet,intheirturn,areprotectingtheearthwellinsteadofotherlessimportantanimals.DetailedreadingCompetition!NewsconferencePlace：Newsconference记者招待会Event：TenastronomersanswerquestionsTopic：Howl

5、ifebeganontheearthRules:1.GirlgroupandBoygroup2.Fivestudentsofeachgroupcometothefronttocompeteforansweringquestionsmadebythereststudents.Scores:FivescoreseachtimeNotice:Whowinswillgetgifts!Gift1Gift21WhathappenedafterBigBang?2Whathappenedbetween4.5and3.8billionyearsago?

6、3Whatweretomaketheearth’satmosphere?Whywaterwasimportantformakingitpossibleforlifetodevelop?Didplantsappearfirstoranimalscomefirst?Andwhy?Whichturnedupfirst:reptiles,mammalsoramphibians?7What’sthedifferencebetweenmammalsandreptiles?8Didairappearearlierthanwaterandlife?9

7、Whatarehumanbeingsdoingatpresent?Referencequestions:Gift1Gift2Gift1Gift2Cheerup!Allofyouhavedoneagoodjob!Weallknowourearthischangingworseandworse,thenwhatshouldwedotoprotectit?Nowlet’sshareMichaelJackson’sfeelingstowardthisproblem!EarthsongExtensionWriteacompositionabou

8、tprotectingourearth.Thanksforyourlistening!Astronomyisthescientificstudyoftheuniverseandtheheavenbodies(suchas