人教版高一英语必修三Unit 4全套课件

Lead-inThebackgroundpictureisthewholecosmos/universe(宇宙).Whatdoyouknowaboutit?It’stheGalaxy(银河系).They’replanets(行星)andstars(恒星).It’stheblackhole.It’sthesolarsystem.Canyouenumerate(列举)theplanets?，HistoryoftheUniverseMakingoftheGalaxyUnit4LearningGoalsKnowledgeGoals1.TopicTalkaboutscienceofthestars;thedevelopmentoflife;spacetravelandgravity.2.WordsandExpressionsWords:astronomy,atmosphere,system,violent,solid,explode,carbon,dioxide,oxygen,surface,planet,harmful,development,spread,method,depend,exist,presence,telescope,disappoint,disappointed,publish,publishing,gravity,force,gradually,cheer,float,massExpressions:solarsystem,intime,nowthat,prevent...from,dependon,cheerup,getthehangof,breakout,layeggs,givebirthto,inone’sturn,carbondioxide,watchout,blockout3.FunctionalItemsHowtomakeinstructions.4.GrammarLearnaboutNounclausesasthesubject(主语从句).AbilityGoalsTrainskillsofreading;cultivatethecreativethinking(创造性思维)andtheimagination(想象力).DeveloptheabilityofspeakingEnglishandcomprehending.EmotionGoalsLearningaboutthescienceofcosmos,theoriginoftheearthandlife,theblackholeandsomethingmoreofastronomy;Cultivatethestudents’interestinastronomyandstudyingscience.ImportantandDifficultPoints1.ImportantPointsThescienceofcosmos,theoriginoftheearthandlife,andtravelinginspace.Trainskillsofreading;cultivatethecreativethinkingandtheimagination.Theusagesofwordsandexpressionsoftheunit.Howtomakeinstructions?TheusageofNounclausesasthesubject.2.DifficultPointsUnderstandtheoriginoftheearthandtheevolutionoflife;TheusageofNounclausesasthesubject.ScienceSubjectsPhysicsChemistryBiologyGeologyMathematicsMedicineBiochemistryGeophysicsAstronomyWarmingupEinsteinHawkingandhistheoriesWhatdoyouknowaboutastronomy?Doyoubelievethatthereislifeontheplanet?CanyounametheminEnglish?MercuryVenusEarthMarsJupiterSaturnUranusNeptunePlutoTheSunTheSolarSystemABlackHoleTheMoonNeilArmstrong(1930–),USA.HelandedonthemooninJuly1969.TheBigBangAtomTheGlobe——OurEarthAtmosphere(大气层)Pre-reading1.Theoriginoflifeonearthisaquestionthatinterestsastronomers.Whatdoyouknowaboutit?2.Howdidlifebeginonearth?3.Readthetitleandlookatthepictures.Predictwhatthereadingwillbeabout.Reading1.FastReading,andanalyzeitsstructure.Writedownthemainideaforeachparagraph.2.Listentothetext:Answerkeyforquestion1:Paragraph1:Awidelyacceptedtheoryabouttheformationoftheuniverse.Paragraph2:Theformationofwaterforlife.Paragraph3:Theimportanceofwaterforlife.Paragraph4:Thedevelopmentofplantsandanimalsontheearth.Paragraph5:Thearrivalofhumansandtheirimpactontheearth.3.DetailedReading:Readthetextloudlyforasecondtimeandthencompletethefillsinthefollowingpicturesaccordingtotheevolution(进化，演变)orderoflifeontheearth.12345678Answerkeyforquestion3:1)smallplantsinwater2)shellfishandallsortsoffish3)greenplantsonland4)insects(onland)5)amphibians(onlandandinwater)6)forests7)reptiles(onland)8)dinosaurs(onland)9)mammals(onland)天文学n.Astronomyisthescientificstudyofthestars,planets,andothernaturalobjectsinspace.1.astronomy相关短语radarastronomy雷达天文学radioastronomy电波(无线电)天文学2.star(1)名词(pl.stars)1）星,恒星;(日、月等)天体;星形物;2）星号;(表示等级等的)星级;星形勋章,如：WhileinTaipeishestayedatafourstarhotel.她在台北逗留期间住在一家四星级旅馆。3）命运;星象4）(电影、体育等的)明星,杰出人物Hiswishtobecomeafootballstarhascometrue.他想当足球明星的愿望实现了。(2)动词（及物）(starred;starred;starring)1）用星形物装饰2）用星号标出3）使成明星,由......主演YesterdaywesawafilmstarringCharlieChaplin.昨天我们看了一部查理·卓别林主演的电影。3.动词（不及物）(starred;starred;starring)1）当明星,主演。如：Shehasstarredinsomethirtyfilms.她主演过大约30部影片。star2）表现出色。如：Hedidn'tstaratthatjob.那份工作他干得并不出色。(4)形容词1）星的;星形的2）明星的,主角的3）出色的,优秀的。如：Tonyisthestarplayeronourteam.托尼是我队的主力。star3.globe（1）名词(pl.globes)1)球;球状物2)地球仪;地球。如：Thisplantcangrowinmanypartsoftheglobe.这种植物能在地球上的许多地方生长。3)眼球（2）动词（不及物）(globed;globed;globing)成球状（3）动词（及物）(globed;globed;globing)使成球状Astronomyistheoldestofthenaturalsciences,datingbacktoantiquity,withitsoriginsinthereligious,mythological,andastrologicalpracticesofpre-history:vestigesofthesearestillfoundinastrology,adisciplinelonginterwovenwithpublicandgovernmentalastronomy,andnotcompletelydisentangledfromituntilafewcenturiesagointhewesternWorld(seeastrologyandastronomy).Earlyastronomyinvolvedobservingtheregularpatternsofthemotionsofvisiblecelestialobjects,especiallytheSun,BackgroundMoon,starsandnakedeyeplanets.AnexampleofthisearlyastronomymightinvolveastudyofthechangingpositionoftheSunalongthehorizonorthechangingappearancesofstarsinthecourseoftheyear,whichcouldbeusedtoestablishanagriculturalorritualcalendar.Insomeculturesastronomicaldatawasusedforastrologicalprognostication.Ancientastronomerswereabletodifferentiatebetweenstarsandplanets,asstarsremainrelativelyfixedoverthecenturieswhileplanetswillmoveanappreciableamountduringacomparativelyshorttime.Thenareyouclearnowabouttheevolutionoflife?Whenthedustsettledintoasolidglobe,theearthwassoviolent.4.6billionyearsago3billionyearsago540millionyearsago250millionyearsago65millionyearsagoTheEvolutionofLifeontheearthShellfishAmphibianReptile——DinosaurPrimitive(原始的)PeopleFlash:storyoftheearth1.Itexplodedloudlywithfireandrock,whichwereintimetoproducecar