高中英语必修三-Unit-4-Warming-up-and-readingppt课件.ppt

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1、Unit4Astronomy:ThescienceofthestarsWarmingupandreading1Howmanyplanetstravelaroundthesun?Whichplanetisthemostimportantforus?Howistheearthdifferentfromotherplanets?23地球______木星______火星______水星________海王星_______土星________天王星_______金星________EarthJupiterMarsMercuryNeptuneSaturnUranusVenus

2、THESOLARSYSTEM4Doyouknowhowourlifebeganontheearth?Doyouknowanyancientideaaboutthebeginningoftheuniverse?5InChineseculture:Panguseparatestheskyfromtheearth.Nuwamendedtheheavenandcreatedhumanbeingsfromtheclay.6InWesterncountries:Godcreatedtheworldandalllivingthings.7Astronomyisoneoftheol

3、destsciences.Itisthescientificstudyofcelestialobjects(suchasstars,planets,comets,nebula,starclustersandgalaxies)andphenomenathatoriginateoutsidetheEarth'satmosphere(suchasthecosmicbackgroundradiation).Itisconcernedwiththeevolution,physics,chemistry,meteorology,andmotionofcelestialobjec

4、ts,aswellastheformationanddevelopmentoftheuniverse.Astronomyisamultidisciplinarysubjectandusesknowledgefrombothmathandphysics.8Readthepassagequicklyandfindthemainidea.Abriefintroductiononhowtheuniversedevelopedandhowlifebeganontheearth.9Readthewholepassagequicklyandmatchthemainideaofea

5、chparagraph.Para.1Para.2Para.3Para.4Para.5TheimportanceofwaterTheformationoftheuniverseThearrivalofhumanbeingsTheformationoftheearthThedevelopmentofplantsandanimals10Para1:Para2:Para3:Para4:Para5:Readthepassagecarefullyandanalyseitsstructure.earth,atmosphereandwaterlifedevelopmenthuman

6、beings11ReadPara.1andanswerthefollowingquestionsHowdidtheuniversebegin?2.Whathappenedafterthe“BigBang”?3.Whatdoes“bodies”meanhere?()A.Personsoranimals’bodiesB.PlanetsandstarsNooneknowsexactlyhowtheearthbegan.Afterthat,atomsbegantoformandcombinetocreatestarsandotherbodies.B12ReadPara.2a

7、ndanswerthefollowingquestions1.WhatwastheearthlikeforseveralbillionyearsaftertheBigBang?2.Whatwastheearthlikebetween4.5and3.8billionyearsago?Justacloudofdust.Asolidglobe.13ReadPara.3totellwhetherthefollowingsentencesaretrueorfalse.()1.Waterontheearthdisappearedlater.()2.Waterwasneces