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1、选修7英语教学课件系列Unit3UndertheseaReadingWhaling,thehuntingandkillingofwhalesforoilandotherbyproducts,waspracticedasanorganizedindustryasearlyas875AD.Bythe16thcentury,ithadrisentobetheprincipleindustryinthecoastalregionsofSpainandFrance.BabyBlueWhaleGrayWhaleKillerWhaleRightWhaleWhiteWhaleSpermWhaleMinke
2、DifferentkindsofwhalesWhatisawhaler?Itcanbe:apersonwhohuntswhales;ashipusedforhuntingwhales.Therearemanyanimalsthathelpouthumansinhunting,suchasdogsandcormorants(鸬鹚).Howmanydifferentkindsofanimalscanyousee?Whatarethey?2.Whatarethementryingtodo?3.Whataretheblackwhalesdoing?4.Whendoyouthinkthisevent
3、istakingplace?(Whichcentury?)5.Howdoyouthinkyouwouldfeelifyouwereoneofthemenintheboat?Why?LookatthepictureonPage19andthinkaboutthequestions.Pre-readingDoyouknowaboutwhales?killerwhale(虎鲸)Killerwhalesareoneofthetoppredators(食肉动物)inthesea.Asagroup,killerwhalesareknowntoeatfish,squid,seals,sealions,p
4、enguins,evenotherwhales.虎鲸/杀手鲸Orcasarehighlysocialanimalsthattravelingroupscalledpods.Podsusuallyconsistof5to30whales,andareledbyfemales.Orcapodsoftenworktogethertocatchameal.鲸群Baleenwhaleshavenoteethbutinsteadhavebaleenplateswithwhichthewhalescanfilterthefoodoutofthewater.须鲸Onthetopofthehead,toot
5、hedwhaleshaveasingleblowhole(呼吸孔),thebaleenwhaleshavetwoblowholes,whichopenonlywhenthewhaletakesabreath.annualmigrationMostbaleenwhalesmigrateovertheentireglobe,movingfromtheAntarctic(南极)wheretheyfeedonkill,tothesub-tropics(亚热带),wheretheybreedandspendthewinterseason.feedinsummerincoldwatersandspen
6、dthewinterinwarmerwaterswithoutanabundanceoffood.Killerwhalesareattackingabaleenwhalewithwhalerswaitingbyintheirboat,harpoon(鱼叉)attheready.Whatishappeninginthepicture?baleenwhalewritercareerwritingstyletimeplacemaincharactermainideaBackgroundClancyawhaleranecdotes(轶事;奇闻)atthebeginningofthe20thcent
7、uryAustraliaWhalers,killerwhalesandbaleenwhalesThekillerwhalehelpedthewhalerstokillabaleenwhaleReadingReadthetextfast,andfillinthefollowingblankswiththepropernames:1.________was16yearsofagewhenhewenttoworkatthewh
