选修七unit3 under the sea period 7 (2)

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1、Period7　ListeningTask，TalkingandWritingTeachingaims　　　　　1．Studentswillbeabletofindoutthereasonswhythepopulationofsharksdecreasessharply.2．Studentswillbeabletoexpressopinionswiththepoliteexpressionslike：Idon'tthinkitiswiseto...Itwouldbebetterifwe...Itisagoodideato...Isupposeitisright...Iwonde

2、rif...3．Studentswillbeabletopersuadethelocalgovernmenttoprotectwildlifeinapoliteway.Teachingprocedures　　　　　Step1　BeforelisteningShowstudentsapictureofsharkandtellthemafactthatsharkpopulationsaredecreasingrapidly.Step2　DuringlisteningTask1：TellstudentsJordonDaviesisinterviewingthesharkexper

3、tDonJamesaboutthesharks'situation.Firstreadthestatementsbelow.Thenlistenandnumberthesestatementsintheorderthattheyhearthem.□Sharkpopulationsgrowataveryslowrate.□Alotarekilledbecauseofmodernfishingtechnology.□Governmentsshouldtakeactionsothatthefishingofsharksissloweddown.□Sharkattacksgetalot

4、ofattentioninthenews.□Sharkpopulationsaredecreasingataseriousrate.□Somespeciesneedtobeprotected.□Thechanceofbeingbittenbyasharkisactuallyverysmall.□Millionsofsharksarekilledeachyear.Keys：theorder：74815623Task2：Listenagainandanswerthefollowingquestions：1．Shouldpeoplebeafraidofswimminginthesea

5、?2．Howmanypeoplearekilledbysharkseachyear?3．Dosharksorpeopleneedtobeprotected？Why?4．Whyaresomanysharksbeingkilled?5．Whydoestheshark'sbiologyaffectsharkpopulations？Completethesentencesblow.A：Ageforreproducingyoung________________________________________________________________________B：Timefo

6、rtheyoungtodevelop________________________________________________________________________C：Numberofyoung________________________________________________________________________6．Howlonghavesharkspeciesbeeninexistence?7．WhatdoesDonthinkwillhappenifwedon'tslowdownthefishingofsharks?Suggesteda

7、nswers：1．No.2．Onlyafew.3．Sharksneedtobeprotectedasmillionsarekilledeachyearbyhumanbeings，whereasonlyafewhumanbeingsarekilledeachyearbysharks.4．Sometimestheyarekilledbyaccidentandsometimesonpurpose.Forexample，sharkfinsoupisadelicacyinsomeAsiancountr