新人教版选修九Unit2 Warming up and Reading课件1

Reviewimportantphrases受…支配对…表示怜悯开拓视野把钱存入银行对…渴求拆除，拆毁撕毁撕成碎片依依不舍地离开，远离被认为是找不到了随机的，任意的atthemercyofhavemercyon/showmercytobroaden/expandone’shorizonsdepositemoneyinabankbethirstyforteardowntearuptearsthtopiecestearyourselfawayfrombereckoned(considered)tobe/asnowheretobefoundatrandom陷入困境在黄昏/在黎明日常事物打破常规紧张的氛围出发，开始鬼门关；死神义务教育参考；谈及确切地说简化这个问题最新的消息有做…的倾向依靠某人做…becaught/trappedinadilemmaatdusk/dawndailyroutinebreakaroutinetenseatmospheresetloosejawsofdeathcompulsoryeducationrefertotobeprecisesimplytheproblemtheuptatedinformationhaveatendencytorelyonsbtodo1.voyage2.mercy3.alongside4.minimum5.reference6.update7.expedition8.compulsory9.reform10.incident11.deposit12.dilemma13.dusk15.thirst16.tear航海仁慈在旁边最小最低提到参考更新提高远险必须的义务的改革插曲事变放安置困境黄昏渴渴望眼泪.撕/拆16.random17.horizon18.nowhere19.latitude20.encyclopedia21.celestialbodies22.tide23.kot24.log25.nauticalmiles26.magnetic27.thebearingcircle28.theastrolable29.thequadrant30.thesextant随意任意地平线视野无处维度百科全书天体潮汐结原木海里有磁性的方位圆星盘象限，四分仪六分仪31.acceleratethespeed加速compassAstrolabe(星盘)Sextant(六分仪)sea/nauticalchartnavigatorsearlynavigationalinstrumentReadaboutwhatnavigation（导航）waslikebeforemoderninstrumentswereused.What’sthepurposeforthewritertowritethepassage?A.Totellhowseamenexploredtheoceanbeforethe17thcentury.B.ToexplainwhatwasimportanttosailacrosstheoceanC.Toillustratesomewaystoplotaship’spositiononamapD.Tointroduceanencyclopedia.SailingtheoceansFast-readingtogetthegeneralidea.Page1UsingnatureKeepingalongsidethecoastlineUsingcelestialbodiesUsingwildlifeUsingtheweatherUsingtheseaUsingcelestialbodiestoplotthepositionstoworkoutthelatitudeaspecialcloudformationindicatesthereislandcloseby(2minutes)UsingwildlifeIfseaweedwasfreshandsmelledstrongly,theshipwasclosetoland.Seabirdscouldbeusedtoshowthewaytolandwhenitwasnowheretobeseen.UsingtheweatherTohelpidentifythepositionofastreamorriverwhen…Todirecttheirsailing“Current”inthelastparagraphonpage1means___.AwindsB.cloudsC.tendencyofseawatergoingD.atmosphere.Usetheinformationtoanalyzethenavigationalskillsandwritetheanswersinyourownwords.1.Tofindtheship’spositionatseaasailorused_______________________.2.Asailorknewthatlandwasnearbyifhesaw____________________________________________________.3.Sailorsused__________________________toincreasetheirspeed.theNorthStarandthesun.seacurrentsortidesandwindsUsingnatureclouds,freshseaweed,nestingbirdsorfogFast-readingtogetthegeneralidea.thenanswerthequestions.Page2Usingnavigationalinstruments1.Findinglongitude2.Findinglatitudethebearingcircle(方位圆)theastrolabe(星盘)thequadrant(象限仪,四分仪)thesextant(六分仪)ReadagainandfillintheblanksThereweretwomethodstofindlongitude:1.__________________________2.___________________________measuringtimeandspeedcompassandcomplicatedmathematicaltablesUsinginstruments(1minute)Writedowntheworkingprinciplesofthefollowinginstruments:Bearingcircle:Astrolabe:Quadrant:Sextant:tocomparetheheightofthesunnowwiththepositionofthesunatmidday.tocomparethepositionoftheshipinrelationtosomestarsorthesun.amorepreciseformoftheastrolabe,tomeasurehowhighstarsareabovethehorizonusingaquartercircleratherthanthefullcircleoftheastrolabe.anupdatedversionofthequadrantandsoitwasmoreaccurate,tomeasuretheangle(角度)betweentwofixedpintsoutsidetheship.(5minutes)1.Wemaywellwonderhowseamenexploredtheoceanbeforelatitudeandlongitudemakeitpossibletoplotaship’spositiononamap.我们很可能感到奇怪，在经纬度被用来在地图上标出位置以前，海员是如何对海洋进行探索的。句中it做形式宾语，真正的宾语为不定式toplotaship’spositiononamap在英语中，动词make,find,think,feel,consider,believe等后，常用it做形式宾语。翻译：她认为照顾好这个病人是她的职责。_______________________________________Sheconsidereditherdutytolookafterthepatient.2.Thevoyagesoftravellersbeforethe17thcenturyshowthattheywerenotatthemercyoftheseaeventhoughtheydidn’thavemodernnavigationalaids.3.modernnavigationalaids.4.alongsidethecoastline5.accomplishednavigators6.workouttheirlatitude17世纪以前的航海记录显示，即使没有现代航海技术的帮助，旅行者们也不是任凭海洋摆布的。7.Thisseemstohavebeenthefirstandmostusefulformofexplorationwhichcarriedtheminimumamountofrisk.这似乎已经是最早的，最有用的探险方式，所谓的风险也最小。…seemstohavedone…表示“似乎已经…”eg:Ourcountryseemstohavechangedmuch.…seemstobedoing似乎正在…eg:ThenaughtyboyseemstobewatchingTVwhiledoinghishomework.8.Thereisaspecialcloudformationwhichindicatedthereisalandcloseby.9.Seabirdscouldbeusedtoshowthewaytolandwhenitwasnowheretobefound.10.Theearliest,theastrolabe,wasaspecialall-in-onetoolfortellingthepositionoftheshipinrelationtothesunandvariousstarswhichcoveredthewholesky.有一种特殊的云彩的形状表明附近有陆地。在看不见陆地的时候，可以用海鸟来指明通往陆地的去路。最早的是星盘，它是一种集多功能于一体的工具，它可以用来表明船只同太阳和布满天空的各种星星之间的相关位置。复习：1.使…成为可能2.标出船的位置3.受…支配4.现代的导航器材5.优秀的航海员6.计算出纬度7.看不见/找不到了8.加速9.某种潮汐或洋流10.打结的绳子11.复杂的数字表12.直线航行13.而不是任意的航线14.集多功能于一体的工具15.和…有关16.参照点之一17.更精确和简化的版本18.更新的版本makeitpossibleplotaship’spositionatthemercyofmodernnavigationalaidsaccomplishednavigatorsworkoutlatitudenowheretobeseen/foundacceleratethespeedcertaintidesandcurrentaknottedropecomplicatedmathematicaltablessetastraightcourseratherthanarandomcourseall–in–onetoolinrelationtooneofthepointsofreferenceamorepreciseandsimplifiedversiontheupdatedversion