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ID:48157950
大小:2.68 MB
页数:30页
时间:2020-01-17
《Warmingup、Pre-reading、Reading、Comprehending.pptx》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、高中英语课件madeofcanruohanxingSailingtheoceanswarmingup(5minutes)SailingQuestion:Howmanyoceansarethereintheworld?PacificOceanAtlanticOceanIndianOceanArcticOceanworldmapexplorationcompassAstrolabe(星盘)Sextant(六分仪)sea/nauticalchartnavigatorsearlynavigationalinstruments
2、Whatisanavigator?Whatisthedifferencebetweenanavigatorandanexplorer?Anavigatorexploresnewroutesacrossthesea.Anavigatorexploresthesea;anexplorerdiscoversnewplacesonland.ZhengHeIsheanavigatororanexplorer?Hemadesevenvoyagesduringhislifetimeandcontributedgreatlytothe
3、scienceofnavigationinChina.ZhengHeMarcoPoloJamesCookHowdoyouthinkseamanfoundtheirwaybeforemodernaccuratemethodsofnavigationwereinvented?Howdidtheynavigatesowell?readingReadaboutwhatnavigationwaslikebeforemoderninstrumentswereused.(25minutes)SailingtheoceansFast-
4、readingtogetthegeneralidea.Page1(10minutes)UsingnatureKeepingalongsidethecoastlineUsingcelestialbodiesUsingwildlifeUsingtheweatherUsingthesea(1minute)Usingcelestialbodiestoplotthepositionstoworkoutthelatitudeaspecialcloudformationindicatesthereislandcloseby(2min
5、utes)UsingwildlifeIfseaweedwasfreshandsmelledstrongly,theshipwasclosetoland.Seabirdscouldbeusedtoshowthewaytolandwhenitwasnowheretobeseen.(1minute)UsingtheweatherfogTohelpidentifythepositionofastreamorriverwhen…Todirecttheirsailing(1minute).Usetheinformationtoan
6、alyzethenavigationalskillsandwritetheanswersinyourownwords.Tofindtheship’spositionatseaasailorused_______________________.Asailorknewthatlandwasnearbyifhesaw____________________________________________________.Sailorsused__________________________toincreasetheir
7、speed.theNorthStarandthesun.seacurrentsortidesandwindsUsingnatureclouds,freshseaweed,nestingbirdsorfog(5minutes)Fast-readingtogetthegeneralidea.thenanswerthequestions.Page2(10minutes)Usingnavigationalinstruments1.Findinglongitude2.Findinglatitudethecompassthebea
8、ringcircle(方位圆)theastrolabe(星盘)thequadrant(象限仪,四分仪)thesextant(六分仪)(2minutes)Readthepassageandanswerthefollowingquestions.Whatistheuseofabearingcircle,astrolabe,quadra
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