人教新课标高中英语选修9 unit2重点单词讲解PPT课件

.,人教新课标高中英语核心词汇释义及例句,选修9第2单元,.,latitude(6),thepositionnorthorsouthoftheequatormeasuredfrom0to90.(Cambridge)n.纬度Thelatitudeoftheislandis30degreesnorth.这个岛的纬度是北纬三十度。Thisgavetheseamenthelocaltimeandallowedthemtofindtheirlatitudeatsea.(9)MoroccoandCaliforniaarebitsoftheEarthinverysimilarlatitudes,bothonthewestcoastsofcontinentswithsimilarclimates,andprobablywithrathersimilarnaturalresources.(nce4),.,atthemercyof(2),atthemercyofsb/sthinthepowerofsb/sth;underthecontrolofsb/sth任由某人某事物摆布或控制Theshipwasatthemercyofthestorm,ieoutofcontrolorhelpless.那只船在暴风雨中失去控制.(Cambridge)受支配Theworkersfindthemselvesabsolutelyatthemercyofthecapitalists.工人们发现他们完全任由这些资本家的摆布。Thevoyagesoftravellersbeforethe17thcenturyshowthattheywerenotatthemercyoftheseaeventhoughtheydidnothavemodernnavigationalaids.(9)Theenemywereatthemercyofus.敌人在我们面前毫无办法。(词典例句),.,encyclopedia(4),abookorsetofbookscontainingmanyarticlesarrangedinalphabeticalorderwhichdealeitherwiththewholeofhumanknowledgeorwithaparticularpartofitTheCambridgeEncyclopediaofLanguage(Cambridge)n.百科全书Agoodencyclopediaisamineofinformation.一部好百科全书是知识宝库。Readthesepagesfromanencyclopedia.(9)Agoodencyclopedia(),thoughexpensive,isuseful,too,becauseyoucanfindinformationonanysubject.(2008ah),.,exploration(19),tosearchanddiscover(aboutsomething)Thebestwaytoexplorethecountrysideisonfoot.(Cambridge)n.探险；探测TheElizabethanagewasatimeofexplorationanddiscovery.英国女王伊丽莎白一世时代是探索和发现的时代。However,itwasnotuntiltheeighteenthandnineteenthcenturiesthattheexplorationofthebotanicalworldbeganonalargescale.(9)Whilemanyresourcesarespentonwhatseemsasmallreturn,theexplorationofspaceallowscreative,braveandintelligentmembersofourspeciestofocusonwhatmayservetosaveus.(2011jx),.,celestial(1),oforfromtheskyoroutsidethisworldThemoonisacelestialbody.(Cambridge)adj.天上的Thesun,thestars,andthemoonarecelestialbodies.太阳、星星、月亮都是天体。Gravitygovernsthemotionsofcelestialbodies.万有引力控制着天体的运动。(词典例句),.,equator(8),animaginarylinedrawnaroundthemiddleoftheEarthanequaldistancefromtheNorthPoleandtheSouthPoleSingaporeis/liesontheEquator.(Cambridge)n.赤道Theequatorisanimaginarycirclearoundtheearth.赤道是一个围绕着地球的假想的圆。AttheNorthPoletheNorthStarisatitshighestpositioninthesky,butattheequatoritisalongthehorizon.(9)Rainforestsslightlyfartherawayfromtheequatorremainjustaswarm,buttheyhaveadryseasonofthreemonthsormornwhenlittlerainfalls.(2007ln),.,horizon(11),thelineatthemostdistantplacewhichyoucansee,wheretheskyseemstotouchthelandorseaThemoonroseslowlyabovethehorizon.(Cambridge)n.地平线；视野Thesundippedbelowthehorizon.太阳沉到地平线以下。Itmeasuredhowhighstarswereabovethehorizonusingaquartercircleratherthanthefullcircleoftheastrolabe.(9)Thebeachtoyourrightstretchesofftothehorizon,slowlynarrowingtonothingnessonlytore-emergeagainonyourleft,nowsteadilywideninguntilitcoversthechairbeneathyou.(2014hb),.,overhead(8),aboveyourhead,usuallyintheskyThisroomneedsoverheadlighting(=lightsintheceiling).(Cambridge)adj.在头上的adv.在头顶上；在空中；在高处over-=above在之上Aneaglecircledhighoverhead.一只鹰在高空盘旋。Onacleardayespeciallyduringthesummerthesailorscouldusethesunoverheadatmiddaytonavigateby.(9)Itisunusualtoseemanybirdsflyingoverheadinthesummertime,ratherthanduringtheperiodsinthespringorautumn.(2007sx),.,tide(34),theriseandfalloftheseathathappenstwiceeverydayhigh/lowtide(Cambridge)n.潮；潮汐；潮流；趋势Asthetiderecededwewereabletolookforshells.潮水退去，我们就能寻找贝壳了。Hepackedhiscanoeandpaddledfordays,ignoringstrongtidesandfreezingwatertillhecametotheisland.(7wb)Thetidewasrushingtotheentranceandbeyondtothewildopensea.(2005tj)Toknowhowtowaitisthegreatsecretofsuccess.懂得如何等待是成功的秘诀。,.,knot(8),afasteningmadebytyingtogethertheendsofapieceorpiecesofstring,rope,cloth,etctotieaknot(Cambridge)n.节v.打结Youneedasharpknifetocutthroughtheknot.你需用快刀才能把结切断。Astheshipadvancedthroughthewatertheknotswerecountedastheypassedthroughaseamanshands.(9)Thetidewasrushingtotheentranceandbeyondtothewildopensea.Therewasaknotoftensioninhisstomach.他紧张得心揪得紧紧的。(词典例句),.,log(15),athickpieceoftreetrunkorbranch,especiallyonecutforburningonafire(Cambridge)n.原木；木材Thehunterhidinalogcabin.猎人藏在小木屋里。Theropewastiedtoalogwhichwasthenthrownintothesea.(9)Thelogcabindininghousewasbuiltin1929andoffersgoodcampfood.(2005zj),.,nautical(1),relatingtoships,sailingorsailorsYourelookingverynauticalinyournavybluesweater.(Cambridge)adj.海上的；航海的Itisanauticalterm,Isuppose.我想，那是航海术语。Thenumberofknotsthatwerecountedduringafixedperiodoftimegavethespeedoftheshipinnauticalmilesperhour.(9)Havethenauticalchartatyourfingertips,andyoullbeabletosteeryourship.熟水路才能划好船。(词典例句),.,nauticalmile(1),aunitofdistanceusedatseawhichisequalto1852metres(Cambridge)海里Severalhoursago,TeamFinlandwasonlyanauticalmileaheadofus.几个小时之前，芬兰队仅仅领先我们1海里。Theknotisaunitofspeedequaltoonenauticalmileperhour.“节”是表示每小时航行1海里的一个速度单位。(词典例句),.,reference(20),aletterthatiswrittenbysomeonewhoknowsyou,todescribeyouandsayifyouaresuitableforajoborcourse,etcMyoldheadteachersaidhewouldwrite/givemeaglowing(=verygood)reference.(Cambridge)n.参考Youshouldmakeareferencetoadictionary.你应该参考字典。However,itwasawkwardtouseasoneofthepointsofreferencewasthemovingshipitself.(9)Ihaventgotthereferencebookyet,butIllhaveatestonthesubjectnextmonth.Dontworry.You_haveitbyFriday.A.couldB.shallC.mustD.may(2010js),.,precise(17),exactandaccurateHecaughtmeattheprecisemomentthatIfainted.(Cambridge)adj.精确的；准确的pre-=beforehand预先；cis=cut切Iamnotclearabouttheprecisebearingofthewordinthispassage.我说不准这个字在这段文章里的确切意义是什么。Thiswasamorepreciseandsimplifiedversionoftheastrolabe.(9)Byknowingpreciselywhatyouarereceivingandwhatyouaremissingouton,yououghttobeabletomakebetter-informed,morereasonabledecisions.(2014js),.,portable(16),(designedtobe)lightandsmallenoughtobeeasilycarriedormovedaportableradio/telephone/computer(Cambridge)adj.轻便的；手提的；便携的port=carry拿，带，运；-able形容词后缀，可的Thenewportablecomputersaregoinglikehotcakes.新的便携式计算机卖得很快。Itwaseasiertohandlebecauseitwasmoreportable.Itsshortcomingwasthatitstillusedthemovingshipasoneofthefixedpointsofreference.(9)Oncetheyhavecompletedtheapprenticeshipandbecomejourneymen,theyreceiveanationallyrecognizedandportablecertificationandtheirpayalsoincreasesagain.(2010hn),.,swoop(2),tomoveveryquicklyandeasilythroughtheair,especiallydownfromaheightinordertoattackTheeagleswoopeddowntosnatchayoungrabbit.(Cambridge)INFORMALtomakeasuddenattackonaplaceorgroupofpeopleinordertosurroundandcatchthem:UndercoverpoliceswoopedonthreehousesinBristolat5a.m.thismorning.(Cambridge)vi.突降；猛扑Theowlswoopeddownonthemouse.那只猫头鹰向着老鼠猛扑下来。Inanothergame,astheturtleswimsacrosstheoceanarium,thefirstporpoiseswoopsdownfromaboveandbuttshisshellwithhisbelly.(nce4)Theterrorendedwhenarmedpoliceswoopedonthecar.武警突袭了这辆车从而制止了这起恐怖活动。(词典例句),.,peck(2),Whenabirdpecks,itbites,hitsorpicksupsomethingsmallwithitsbeakThebirdslearntopeckholesinthefoilmilkbottletops.(Cambridge)togivesomeoneaquickkiss,especiallyonthesideoftheface:Hepeckedhisauntonthecheek.(Cambridge)vt.hewouldnotbedenied.他固执地扬起下巴,一副不肯罢休的样子。(词典例句),.,jawsofdeath(1),AdangeroussituationorconfrontationTherescuerssnatchedth