八年级英语下册 第34课课件 冀教版.ppt

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1、Lesson34:TrainsGoonRails!newwordsthinkaboutittextNewwordsrailn.铁轨inventv.发明inventorn.发明家steamn蒸汽enginen.发动机wheeln.车轮locomotiven.机车engineern.工程师explodev.爆炸railwayn.铁路passengern.旅客distancen.距离ironn.铁duringprep.在…期间geton/off上/下车speedn.速度perprep.每evenadv.甚至magneticadj.磁的jetn.喷射流jetengine喷气发动机inv

2、entorwheelsteamenginelocomotiveexplodev.爆炸railwaysThinkaboutitHowdoyouusuallytraveltosomeotherplace?Whoinventedthesteamengine?Whendidthefirstpassengerrailwayopen?Whoinventedthesteamengine?Inthe1700s,manyinventionswereworkingonthesteamengine.Inthe1760s,ascientistinEnglandinventedawaytoputsteam

3、enginesandwheelstogether.Soon,peoplehadanewtypeoftransportation:thesteamlocomotive.Whathappenedtothefirststeamlocomotive?AnEnglishengineerdrovethefirststeamlocomotiveonaroad,butitexploded!Whoinventedrailways?In1804,alocomotivecarriedaboutsevenpassengersashortdistanceonsomeironrails.Itwasthefi

4、rstrailway!ItwasinEngland.Whendidthefirstpassengerrailwayopen?ThefirstpassengerrailwayopenedinEnglandin1825.thefirstpassengertrainwascalledtheRocket.Duringthe1830s,countriesallovertheworldstartedtobuildrailways.Afterfiftyyears,railwayscoveredmostcountries.Manytrainstationsbuilttomakeiteasierf

5、orpassengerstogetonandoffthetrains.Howfastdotrainsgo?Earlytrains,liketheRocket,hadatopspeedof50kilometersperhour.Eventhebeststeamlocomotiveswereslow.Theycouldonlygoabout80kilometersperhour.Today’strainsaremuchfaster.Theytravelatabout240kilometersanhour.Thefastesttrainscango380kilometersanhour

6、.Howfastthistrainis!Whoinventedthesteamengine?谁发明了蒸汽发动机？inventvt.发明Whofirstinventedtheairplane?谁最先发明了飞机？【衔接】inventionn.发明HowmanyinventionsdidEdisonhaveinhislife?爱迪生一生中有多少项发明？inventorn.发明家Hehasinventedmanythings.Heisagreatinventor.他发明了许多东西。他是个伟大的发明家。Inthe1760s,ascientistinEnglandinventedawayto

7、putsteamenginesandwheelstogether.在18世纪60年代，一位英国的科学家发明了把蒸汽机车与车轮结合在一起的方法。1760s18世纪60年代表示“……世纪，……年代”，一定要用复数形式。如：1800s19世纪1730s18世纪30年代Mygrandmawasborninthe1890s.我奶奶出生于19世纪90年代。【注意】表示“……世纪，……年代”，前面不要忘记加定冠词the。Earlytrains,liketheRocket,hadatopspee