高中英语 2.5《Unit2 Sailing the oceans 》课件 新人教版选修9[1].ppt

《高中英语 2.5《Unit2 Sailing the oceans 》课件 新人教版选修9[1].ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、新课标人教版课件系列《高中英语》选修(模块）9-2.5Sailingtheoceanswarmingup(5minutes)SailingQuestion:Howmanyoceansarethereintheworld?PacificOceanAtlanticOceanIndianOceanArcticOceanworldmapexplorationWritedownthewordsyouknow,whicharerelatedtonavigationandsea.navigationsail,sailor,voyage,latitude,longitude,equator,h

2、orizon,captain,landisland,nauticalmiddles,explore,exploration…seaseaman,seaweed,seafood,shore,offshore,onshore,beach,beach-ball,seabed,sea-bird,seagull,seashell,seaside,seawater,seasick,coast,coastline,tide,wave,current…Pre-reading(5minutes)compassAstrolabe(星盘)Sextant(六分仪)sea/nauticalchartnav

3、igatorsearlynavigationalinstrumentsWhatisanavigator?Whatisthedifferencebetweenanavigatorandanexplorer?Anavigatorexploresnewroutesacrossthesea.Anavigatorexploresthesea;anexplorerdiscoversnewplacesonland.ZhengHeIsheanavigatororanexplorer?Hemadesevenvoyagesduringhislifetimeandcontributedgreatlyt

4、othescienceofnavigationinChina.ZhengHeMarcoPoloJamesCookHowdoyouthinkseamanfoundtheirwaybeforemodernaccuratemethodsofnavigationwereinvented?Howdidtheynavigatesowell?readingReadaboutwhatnavigationwaslikebeforemoderninstrumentswereused.(25minutes)SailingtheoceansFast-readingtogetthegeneralidea.

5、Page1(10minutes)UsingnatureKeepingalongsidethecoastlineUsingcelestialbodiesUsingwildlifeUsingtheweatherUsingthesea(1minute)Usingcelestialbodiestoplotthepositionstoworkoutthelatitudeaspecialcloudformationindicatesthereislandcloseby(2minutes)UsingwildlifeIfseaweedwasfreshandsmelledstrongly,thes

6、hipwasclosetoland.Seabirdscouldbeusedtoshowthewaytolandwhenitwasnowheretobeseen.(1minute)UsingtheweatherfogTohelpidentifythepositionofastreamorriverwhen…Todirecttheirsailing(1minute).Usetheinformationtoanalyzethenavigationalskillsandwritetheanswersinyourownwords.Tofindtheship’spositionatseaas

7、ailorused_______________________.Asailorknewthatlandwasnearbyifhesaw____________________________________________________.Sailorsused__________________________toincreasetheirspeed.theNorthStarandthesun.seacurrentsortidesandwindsUsingnatureclou