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Unit2SailingtheoceansWarmingup高三人教新课标版选修九DoyoulikeSailing?Question:Howmanyoceansarethereintheworld?PacificOceanAtlanticOceanIndianOceanArcticOceanWorldmapexplorationWritedownthewordsyouknow,whicharerelatedtonavigationandsea.sail,sailor,voyage,latitude,longitude,equator,horizon,captain,land,island,nauticalmiddles,explore,exploration…seaman,seaweed,seafood,shore,offshore,onshore,beach,beach-ball,seabed,sea-bird,seagull,seashell,seaside,seawater,seasick,coast,coastline,tide,wave,current…1.Whatisanavigator?2.Whatisthedifferencebetweenanavigatorandanexplorer?Anavigatorexploresnewroutesacrossthesea.Anavigatorexploresthesea;anexplorerdiscoversnewplacesonland.navigatorseanauticalinstrumentsfindnewislandsorcontinentsNavigatorissb.whofindsthepositionandplotsthecourseofashipbyusingmapsandnauticalinstruments.explorerlanduseofcompassandlandmarksfindnewplaceswithinanalreadyidentifiedislandorcontinentExplorerissb.whotravelsintoorthroughaplaceinordertolearnaboutit.Veryoftennavigatorsarealsoexplorers.ZhengHe(1371-1433)Isheanavigatororanexplorer?HemadesevenvoyagesduringhislifetimeandcontributedgreatlytothescienceofnavigationinChina.HeisconsideredasoneoftheearliestnavalexplorersinChinesehistory.MarcoPolo(1254-1324)HeisthemostfamouswesternertotraveltheSilkRoadandtheonlypersontoprovideinformationaboutChinatotheoutsideworld.TheMapofMarcoPolo’svoyageJamesCook(1728-1779)HewasthegreatestBritainnavigator.HediscoveredtheHawaiianIslands.ColumbusHewasthefirstpersonthatdiscoveredthe“NewWorld”.navigatorn.导航者,领航员navigatevi.航行,航海,航空vt.航行于,驾驶,操纵,使通过e.g.Theynavigatedwithdifficultythroughthecrowd.他们在人群中艰难行进。navigationn.航海,航行navigationaladj.航海的,航行的ExplanationHomework1.Readthenewwords.2.PreviewReadingSAILINGTHEOCEANSonpage12.