英语人教版选修九unit2 sailing the oceans导学案

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1、Unit2Sailingtheoceans导学案高三英语备课组袁海新SectionⅠWarmingUp&Reading课文大意理解1.Whendidearlysailorshaveapracticalmethodofmeasuringlongitude?A.The12thcenturyB.The17thcenturyC.The15thcenturyD.The16thcentury2.Whatdoesseaweedlooklikewhenitisnearland?A.ItlooksniceB.ItlookssmallC.ItlooksD.Itlooksdark3.Wh

2、erearewenowwhentheNorthStarisalongthehorizon?A.AttheequatorB.AttheNorthPoleC.AttheSouthPoleD.Atsea4.Fromthereadingwehavelearned　　　.A.whyearlyseamenwantedtosailthesevenseasB.thatthereisusefulinformationinanencyclopediaC.thatearlysailorswentexploringtheseausingtheirskillsandsimpleinstrum

3、entsD.whylatitudeandlongitudeareimportanttoplotaship’sposition5.Themainideaofthispassageisabout　　.A.thatkeepingalongsidethecoastlineisfirstandmostusefulformofexploration.B.theskillsandnavigationalaidsearlyseamenusedwhilesailingtheoceansC.thatfindinglongitudeandlatitudeisamusttoplotashi

4、p’spositiononamapD.howtheearlysailorsusedtheirskillsandsimpleinstruments课文缩写填空Thisreadingexplainshowseamen1theoceansandwhatkindofnavigational2wereusedtosailorsbeforetheseventeenthcenturywhentheywere3theopenseaswithoutseeingland.The4oftravellersbeforethe17thcenturyshowthattheywerenotatt

5、he5oftheseaeventhoughtheydidnothavemodernnavigationalaids.Theseamencoulduse6bodies,wildlife,theweatherortheseatokeep7thecoastline.Theycouldalsousethe8tohelpfindthedirectionthattheshipneedstogo.Theycouldusethe9circletomeasurethesun’spositionandtelliftheyweresailingontheircorrectratherth

6、anarandomcourse.Whiletheastrolabe,thequadantandthesextantcouldhelpgivetheseamenthelocaltimeandallowedthemtofindtheir10atsea.名师全程导析nowherenear离……很远benowhere一无所得，一事无成nowhere为否定副词，放于句首时，　句子要用倒装语序［单词点击］1.Mercy(1)n.[C]仁慈；宽恕Theyshowednomercytotheirhostages.他们对人质丝毫不讲仁慈。(2)n.[C]幸运；恩惠It’samercy

7、thattheexplosionhappenedafterthetheatre.爆炸发生在散戏以后，真是不幸中之大幸。atone’smercy在某人的支配和摆布之下havemercyonsb.showmercytosb.withoutmercy毫不留情地It’samercythat真是幸运leavesb./sth.tothemercy/merciesofsb./sth.听任某人（可能受到虐待而无能为力）throwyourselfonsb.‘smercy指望某人能够善待（或宽恕）你；请求某人的宽恕Heisatthemercyofhiswife.他任凭他妻子摆布。S