Unit+3+Sea+Exploration+Reading+and+Thinking导学案 高中英语人教版（2019）选择性必修第四册

人教版高二英语选修四导学案年级:班级:学生姓名:科目:English制作人:高二英语组编号：Book7Unit3SeaexplorationMotto:Oceanisthecradleoflife.海洋是生命的摇篮ILearningaims:1.learnaboutthehistoryofChina'sseaexploration.2.identifythepatternofthetextanditsnarrativetechnique.3.gainabetterunderstandingofthesignificanceoftheBeltandRoadInitiative.IILearningguidanceandtests预习学案（阅读知识链接1、2、3，完成下表）NNavigator:_____________________Nationality:_________________Time:_____________Achievement:Navigator:_____________________Nationality:_________________Time:_____________Achievement:Navigator:_____________________Nationality:_________________Time:_____________Achievement:Q1:Whatdoyouknowaboutseaexploration?Q2:Whatdoyouwanttoknowaboutseaexploration?课堂学案LearningguidanceTests1.Lead-in1.Whatimportantrolesdoseasplayinourlife?_______________________________________________________________________________2.Whowilloccurtoyourmindwhentalkingaboutseavoyage？_______________________________________________________________________________2.While-reading(Fast-reading)1.Whatisthetypeofthetext?A.narrativeB.descriptiveC.argumentativeD.expositoryTip：AnarrativeessayTip：Anarrativeessayisastorywithabeginning,middle,andend.Adescriptiveessaydescribesasubjectandlistsinterestingdetails.Anargumentativeessayaimstoconvincethereader.Anexpositoryessayisfactual,givinginformationonasubject.2.What’sthemainideaofthewholetext?A.thereasonsforChineseseaexplorationB.theinfluenceofChineseseaexplorationC.thedevelopmentofChineseseaexplorationD.thefutureofChineseseaexploration3.Thedevelopmentofseaexplorationismainlyorganizedin________order.3.While-reading(Detailedreading)1.Readthetextquicklyandmatchthemainideaofeachparagraph.Para1.A.Chinaisalsojoiningwithothercountriesonotherimportantprojects.Para2.B.TravelfromeasttowestbeganlongbeforeColumbus.Para3.C.Inancienttimes,traveleasttowestwasontheSilkRoad.Para4.D.Chinawillcontinuetoexploretheseaandenhancerelationshipswithothercountries.Para5.E.The21stCenturyMaritimeSilkRoadhasencouragedcooperationandstrengthenedthebondsbetweenChinaandtherestoftheworld.Para6.F.ZhengHe’sseavoyagesbuiltrelationswithothercountries.Introductiontothetopic:Introductiontothetopic:ReachingoutacrosstheseaPara.1InthefutureAtpresentInthepastTimeInthefutureAtpresentInthepastTimeRegionRegionPurposePurpose3.completethetask4onpage27Post-reading（Discussion）Isseaexplorationagoodthingorabadthing?Why?Post-readingDecidewhetherthesestatementarefacts(F)oropinions(O).1.____Itwasareallyinterestingtalk.2.____Itoftentakesmehalfanhourtofallasleepatnight.3.____Youlooktired.Notenoughsleep,right?4.____Itisaffectingmyschoolwork.5.____Ifailedinallmyschoolsubjectsthissemester.6.____Iusuallypickupmyphone.7.____Ithinkthephoneistheproblem.8.____Afive-minutewalkissoeasythatitishardtosayno!知识链接1：(一、郑和下西洋)ZhengHewasa

ChineseadmiralandexplorerwhomadesevenvoyagestotheWesternSea.ThefirstvoyagestartedinYonglethreeyears(1405),andthelastvoyageendedinXuandeeightyears(1433),totalingseventimes.

ZhengHe'svoyagesareoneoftheworldnavigationfeatsinhistory.ThemissionwasbeingmadebyZhengHe,andthefleetsailedtothewestofBorneo.Onthesevenvoyage,ZhengHe,thethreetreasureseunuch,ledthefleetfromthepointofdeparturetotheportofLiuJiaGang,andtotheportofTaipingport.TheWesternPacificOceanandYangYangvisitedmorethan30countries,otherplacesareknowntoreachEastAfricaandtheRedSeaasfaraspossible.Hisvoyagesareoneoftheworldnavigationfeats(航行壮举)inhistory.ZhengHe'svoyagetothewestisthelargestandlongestsailingvoyageinChinainancienttimes.ItisalsothelargestmaritimeexplorationinthehistoryoftheworldbeforethevoyageinthelatefifteenthCentury.However,therearestilldisputesaboutthehistoricalfactsofZhengHe'sfleetsuchasitspurposeandscopeofnavigation,anditsevaluationofthesevenvoyages.知识链接2：.（ChristopherColumbus哥伦布）ChristopherColumbuswasanItalianexplorerwhosejourneyskickedoffcenturiesofexplorationandexploitationontheAmericancontinents.Hediscoveredanewworldin1492.ThevoyagesofColumbusacrosstheAtlanticOceanbeganaEuropeaneffortatexplorationandcolonizationoftheWesternHemisphere.Whilehistoryplacesgreatsignificanceonhisfirstvoyageof1492hedidnotactuallyreachthemainlanduntilhisthirdvoyagein1498.Likewise,hewasnottheearliestEuropeanexplorertoreachtheAmericasasthereareaccountsofEuropeantransatlanticcontactpriorto1492.NeverthelessColumbus'svoyagecameatacriticaltimeofgrowingnationalimperialismandeconomiccompetitionbetweendevelopingnationstatesseekingwealthfromtheestablishmentoftraderoutesandcolonies.Therefore,theperiodbefore1492isknownasPre-Columbus.知识链接3：（FerdinandMagellan麦哲伦）FerdinandMagellanisaPortuguese

navigator

andexplorerwhomadethefirstvoyagearoundtheworldin1519.HesailedaroundSouthAmerica,discoveringtheStraitofMagellan,andacrossthePacific.Brutal,bellicose,andbrave,Magellanturnedacommercialvoyageintoahair-raising（惊心动魄的）showdownwithawideworldfewEuropeanscouldimagine.Atthebeginningofhisjourney,hiscontemporariessuspecteditwasimpossibletosailaroundtheentireglobe-andfearedthateverythingfromseamonsterstokillerfogsawaitedanyoneenoughtotry.Atthetime,PortugalandSpainwereinvolvedinanintenserivalrytoseewhocouldfind andclaimnewterritorywheretheycouldsourcethespicescovetedbyEuropeanaristocrats.In1505,Magellanjoinedthefight,travelingtoIndia,Malaysia,andIndonesia.ButhisdaysinservicetoPortugalwerenumbered:HewasaaccusedofillegaltradingandfelloutwithManuell,whoturneddownhisproposaltolocateanewspiceroute.AfterMagellan'sdeath，hiscrewcontinuedinthesingleshipthatremained,captainedbyJuanSebastianElcano,aBasque.TheyreturnedtoSpaininSeptember1522.Alongtheway,theyhadencounteredanewocean,mappednewroutesforEuropeantrade,andsetthestageformodernglobalism.Sixtythousandmileslater,andafterthedeathof80percentofthoseinvolved,theexpeditionhadproventhattheglobecouldbecircumnavigatedandopenedthedoortoEuropeancolonizationoftheNewWorldinthenameofcommerce.斐迪南·麦哲伦是葡萄牙航海家和探险家，他于1519年进行了首次环球航行。他在南美洲航行，发现了麦哲伦海峡，并横渡了太平洋。残忍、好战、勇敢的麦哲伦把一次商业远航变成了一场惊心动魄的对决，他的对手是大多数欧洲人无法想象的广阔世界。旅程伊始，当时的人就怀疑麦哲伦无法完成这次环球之旅，各方质疑不断，从海怪到杀人于无形的迷雾，都在等着某个有勇文无谋的人自投罗网。当时，葡萄牙和西班牙正在暗中较劲，看谁能找到新的领土，并从那里获得欧洲贵族垂涎的香料。1505年，麦哲伦也加入了这场竞争，前往印度、马来西亚和印度尼西亚。但他在葡萄牙的日子已经所剩无几:麦哲伦被指控非法交易，并因为曼努埃尔一世拒绝了其开辟寻找香料新路线的提议，二人闹翻。麦哲伦死后，船员们驾驶着仅存的一艘船，在船长巴斯克人胡安·塞巴斯蒂安·埃尔卡诺的带领下，继续踏上征程。1522年9月，他们回到了西班牙。这一路，他们遇到了新的大海，开辟了欧洲贸易新航线，并为现代全球化奠定了基础。经过近6万英里的航行、失去了80%的船员后,探险队实现了环球旅行,为日后欧洲以贸易的名义对新大陆殖民打下了根基Period2Phrasebank起航__________________2．把...当作中心，集中于__________________3．独领风骚____________________4．在...的指挥下____________________5．作为对什么回报________________6．退出，撤回___________________7．为了...的利益_________________8．在手头________________________9．从一个...的角度看_________________10．增强...和...之间的关系___________________1.Overthecenturies,furthertradingallowedmoreexplorationoftheregionstothewestofChina,asrecordedinDuHuan’sRecordofMyTravelsintheeighthcentury.as引导非限制性定语从句as引导非限制性定语从句时，常见的固定表达：asweallknow/aseveryoneknows/asisknowntoall/asiswellknown众所周知asscheduled/planned/expected正如预期/计划/预料的那样asisoftenthecase情况常常如此aswecansee正如我们所看到的那样asismentionedabove如上所述用which或as填空1.______youknow,ifyoudothesamethingoverandoveragain,youbegintodoitautomatically.2.Andourporterscarryyourluggage,______meansthatyoucansimplyenjoytheexperience.3.Smokingisharmfultoone’shealth,______isknowntousall.4.Itwasrainingheavilylastnight,_______preventedmefromgoingtotheparty.(1)as引导的非限制性定语从句可置于主句前，而which则不能；(2)as引导的非限制性定语从句有“正如”之意，而which没有此义。2.过去分词作后置定语。AtradingrouteacrosstheseawasalsoextendedalongthecoastsoftheIndianOcean,centredaroundCeylon(nowSriLanka).(Para.2)TheancientsearoutestravelledbyZhengHearebeingrevisitedwiththe21stCenturyMaritimeSilkRoad,whichispartoftheBeltandRoadInitiative.(Para.4)AlthoughtheancientsearoutesofZhengHehavebeentravelledmanytimes,therearestillmanyotherplaceslefttoexplore.(Para.5)过去分词短语作后置定语，放在被修饰的名词后面，它的作用相当于一个定语从句。practice:TheStoryofAhQ___________(write)byLuXunisfamiliartous.Thecity______________（surround）bymountainsismyhometown.Allthechildren____________（play）therenottomakesomuchnoise.Theylivedinaroom_________(face)thesouth.Ⅲ、ConsolidationA层：优化设计小本A级B层：优化设计小本B级C层：1.完成句子1.Thenewcharitywillbegivingaway$55millionayear,________________________________________.这家新的慈善机构每年将捐赠5500万美元,与其他知名慈善机构并驾齐驱。2.Athousandboats________________________________________.

百里江面,千帆竞发。3.Shealway________________________________________.,butnooneeverheardhercomplain.

她手头总有许多工作要做,但从没有人听到她抱怨。4.Mostolderpeople________________________________________.

大多数的老年人并没有退出社会生活的圈子。5.Perhaps________________________________toshiftyourresponsibilities.

也许你需要和老板沟通,调整你的工作职责。根据下面提示,用本单元词汇和句型写一篇50词左右的短文1.有一个古老的传说,是关于一个商人登上一艘在清晨起航的船队的。(tale,merchant,setsail)2.这个商人去印度做生意买香料。(spice)3.在返航途中,他与一些水手组成联盟,抢劫其他商人的货物,并与这些水手商议如何分配所得。(negotiate)4.但最终,他们的尝试失败了。____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________课外知识积累：Fewthingsexercisegreensensibilitiesmorethesedaysthanmarineplasticlitter.Thedetrituslooksunsightlywhenitwashesuponbeaches,andcruelwhenitchokesphotogenicseacreatures.Scientistsestimatethatperhaps8mtonnesofplasticwasteenterstheoceaneachyear,dischargedbyriversorshedfromships.Plentystaysclosetoshore.Some,though,iscarriedbycurrentstomid-oceangyres.如今没有什么能像海洋塑料垃圾那样更能唤醒人们的环保意识。这些垃圾被冲到沙滩上时的画面很不雅观，海洋生物被垃圾卡住的照片让人觉得不忍。科学家认为每年约有8百万公吨塑料垃圾流入海洋，这些垃圾来自河流或船只。大量的垃圾堆积在海岸附近。一些垃圾在水流的作用下流入海洋中部环流。ThebiggestoftheseislocatedhalfwaybetweenCaliforniaandHawaii—andsolitteredwithflotsamthatithasbeennicknamedtheGreatPacificGarbagePatch.AstudypublishedlastMarchinScientificReportsbyLaurentLeBretonoftheOceanCleanup,aDutchcharity,andcolleagues,foundthatitcontainsbetween45,000and129,000tonnesofplasticdebrisspreadoveranarearoughlythesizeofAlaska.其中最大的环流位于加利福尼亚和夏威夷之间—由于垃圾到处都是，所以这片区域被称为太平洋垃圾带。去年3月，荷兰慈善机构OceanCleanup的LaurentLeBreton和同事在《科学报告》中发表的研究发现这片区域有45,000至129,000公吨的塑料垃圾，漂浮面积相当于整个阿拉斯加州的面积。Theideaofsweepingitallupmightsoundfanciful.ToBoyanSlatitseemedmerelyambitious.Whatif,hewonderedin2012(thenaged18),youcouldbuildamassivebow-shapedfloatingbarrier,anchorittotheseabedandletcurrentsshufflethelitterintothescoop?Despitehisyouthfulageandma