RX-高二(下)选修七-Unit-3-Readingppt课件.ppt

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1、Unit3UndertheseaReading选修七1Pre-readingDoyouknowaboutwhales?2killerwhale(虎鲸)3Killerwhalesareoneofthetoppredators(食肉动物)inthesea.Asagroup,killerwhalesareknowntoeatfish,squid,seals,sealions,penguins,evenotherwhales.虎鲸/杀手鲸4Orcasarehighlysocialanimalsthattravelingroupscalledpods.Podsusuallyconsistof5to30

2、whales,andareledbyfemales.Orcapodsoftenworktogethertocatchameal.鲸群5Baleenwhaleshavenoteethbutinsteadhavebaleenplateswithwhichthewhalescanfilterthefoodoutofthewater.须鲸6Onthetopofthehead,toothedwhaleshaveasingleblowhole(呼吸孔),thebaleenwhaleshavetwoblowholes,whichopenonlywhenthewhaletakesabreath.7annua

3、lmigrationMostbaleenwhalesmigrateovertheentireglobe,movingfromtheAntarctic(南极)wheretheyfeedonkill,tothesub-tropics(亚热带),wheretheybreedandspendthewinterseason.feedinsummerincoldwatersandspendthewinterinwarmerwaterswithoutanabundanceoffood.8Killerwhalesareattackingabaleenwhalewithwhalerswaitingbyinth

4、eirboat,harpoon(鱼叉)attheready.Whatishappeninginthepicture?baleenwhale9writercareerwritingstyletimeplacemaincharactermainideaBackgroundClancyawhaleranecdotes(轶事;奇闻)atthebeginningofthe20thcenturyAustraliaWhalers,killerwhalesandbaleenwhalesThekillerwhalehelpedthewhalerstokillabaleenwhale10ReadingReadt

5、hetextfast,andfillinthefollowingblankswiththepropernames:1.________was16yearsofagewhenhewenttoworkatthewhalingstation.2._______orderedClancytogototheboatastherewasawhaleoutthereinthebay.3.________wasswimmingbytheboat,showingthewhalerstheway.ClancyOldTomGeorge114._______toldClancythattheywouldreturn

6、thenextdaytobringinthebodyofthewhale.5._______wascarriedbythewavesfurtherandfurtherawayfromthewhalers.6._______knewthatOldTomwouldprotectJames.JamesRedJack12TrueorFalse1.TherewasnoevidencethatOldTomwashelpingoutthewhalers.2.Theauthorcomparesthekillerwhaleswithadog.FT133.Thekillerwhalesworkedasateam

7、.4.Thekillerwhalesdraggedthewhaleunderthewatertofeedonitsbody.5.Thewhalersreturnedhomewiththewhale’sbody.6.OldTomdidn’thelpoutJames.TFFF14Whenhewitnesseditwithhisowneyesmanytimes.WhendidClancybegintobelieve