高中英语 Unit3 Under the sea Period 7优秀教案 新人教版选修7VIP免费

Period7ListeningTask，TalkingandWritingTeachingaims1．Studentswillbeabletofindoutthereasonswhythepopulationofsharksdecreasessharply.2．Studentswillbeabletoexpressopinionswiththepoliteexpressionslike：Idon'tthinkitiswiseto...Itwouldbebetterifwe...Itisagoodideato...Isupposeitisright...Iwonderif...3．Studentswillbeabletopersuadethelocalgovernmenttoprotectwildlifeinapoliteway.TeachingproceduresStep1BeforelisteningShowstudentsapictureofsharkandtellthemafactthatsharkpopulationsaredecreasingrapidly.Step2DuringlisteningTask1：TellstudentsJordonDaviesisinterviewingthesharkexpertDonJamesaboutthesharks'situation.Firstreadthestatementsbelow.Thenlistenandnumberthesestatementsintheorderthattheyhearthem.□Sharkpopulationsgrowataveryslowrate.□Alotarekilledbecauseofmodernfishingtechnology.□Governmentsshouldtakeactionsothatthefishingofsharksissloweddown.□Sharkattacksgetalotofattentioninthenews.□Sharkpopulationsaredecreasingataseriousrate.□Somespeciesneedtobeprotected.□Thechanceofbeingbittenbyasharkisactuallyverysmall.□Millionsofsharksarekilledeachyear.Keys：theorder：74815623Task2：Listenagainandanswerthefollowingquestions：1．Shouldpeoplebeafraidofswimminginthesea?2．Howmanypeoplearekilledbysharkseachyear?3．Dosharksorpeopleneedtobeprotected？Why?4．Whyaresomanysharksbeingkilled?5．Whydoestheshark'sbiologyaffectsharkpopulations？Completethesentencesblow.A：Ageforreproducingyoung________________________________________________________________________B：Timefortheyoungtodevelop________________________________________________________________________C：Numberofyoung________________________________________________________________________6．Howlonghavesharkspeciesbeeninexistence?7．WhatdoesDonthinkwillhappenifwedon'tslowdownthefishingofsharks?Suggestedanswers：1．No.2．Onlyafew.3．Sharksneedtobeprotectedasmillionsarekilledeachyearbyhumanbeings，whereasonlyafewhumanbeingsarekilledeachyearbysharks.4．Sometimestheyarekilledbyaccidentandsometimesonpurpose.Forexample，sharkfinsoupisadelicacyinsomeAsiancountries.5．15years；14months；7－9.6．400millionyears.7．Donthinksthatmanysharkspecieswillnotbeabletosurvive.Step3Post－listening(talking)Askstudentstomakeupadialogueaccordingtothesituationbelow.SupposeyouwereacitizeninacoastalcityinChina，sharkhuntisaseriousprobleminyourprovince.Trytopersuadethelocalgovernmenttotakeactiontoprotectwildlifeinapolitewaywiththehelpofthefollowingexpressions：Idon'tthinkitiswiseto...Itwouldbebetterifwe...Itisagood/wiseideato...Isupposeitisright...Iwonderif...Whynot...We'dbetter...Step4HomeworkWriteapersuasivelettertothelocalgovernmenttocontroltheimproperhunts.\s\up7()1．KillerWhalesCommonname：KillerWhaleScientificname：OrcinusorcaSize：Femalescanreachlengthsupto24feetandweighbetween3000to8000lb.Malescanreachlengthsupto27feetandcanweighupto12000lb.Calvesareabout8feetlongand300to400poundsatbirth.Wherearetheyfound?FromtheNorthPoletotheSouthPolefromtheIndianOceantotheAtlantic，killerwhalesarefoundinalloceansoftheworld.Whatdotheyeat?Howdotheygetanamelike“killerwhale”？Killerwhalesareoneofthetoppredatorsinthesea.Asagroup，killerwhalesareknowntoeatfish，squid，seals，sealions，penguins，evenotherwhales.But，keepinmind，itwouldbedifficultforakillerwhaleoffthecoastofCaliforniatoeatapenguin.Killerwhaleseatthefood(orprey)that'savailabletothem.Forexample，akillerw...