Section B 3a-3b

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1、教学设计（第一课时）教学目标:1.掌握以下生词和短语：sharkfinsoap,cutoff,cruel,thefoodchain,intheocean’secosystem,scientificstudy,developlaws.2.理解课文，训练阅读能力。3.环保意识教育。教学重点：词汇教学和阅读训练。教学难点：1.by…..表达增加或减少的幅度2.eachtime引导时间状语从句。教学准备：相关课文语音材料和PPT.教学步骤：Step1ReviewingReviewthenewwordsbyreadingthem.Step2Leading-in1.s

2、howsomepicturesaboutsharksandsharkfinsoap.Learnaboutthetopicandlearnsomenewwords.2.keywords:sharkssharkfinsoapfinningcreulbeharmfultoendangered3.Sohowcanwesavethesharks.Step3Reading1.Letthestudentsreadthepassagequickly.Questions:①Howmanysharksarecaughtandtradedeveryyear?②Wheredoes

3、thepassageprobablycomefrom?A.anovelB.aguidebookC.anadaboutsharkfinsoapD.asciencemagazine③Howmanyenvironmentalgroupsarementioned?2.Readmorecarefully,completethefactsheetafterthepassageandfindoutthephrasesinthepassage.①.食物链的顶端②.一碗鱼翅汤③.cutoff④.海洋生态系统⑤.科学研究⑥.鱼翅的销售⑦.developlaws⑧.环保组织⑨.

4、sofar⑩.濒临灭绝的Wheresharkfinsoupispopular:Numberofsharkscaughtandtradedeveryyear:Howgovernmentscanhelp:Twoenvironmentalgroupsagainst“finning：3.Playtape,letthestudentslistenandrepeat.Questions:①.Whatwillhappenifashark’sfinsarecutoff?②.Whatwillhappenifsharks’numbersdroptoolow?③.Whathav

5、etheenvironmentalprotectiongroupsdonetosavesharks?Whataretheydoing?4.Difficultsentences：①.Thenumbersofsomesharks/havefallenbyover90percent/inthelast20to30years.②.Butdoyourealizethat/youarekillingawholeshark/eachtimeyouenjoyabowlofsharkfinsoup?③.Butinfact,around70millionsharks/arec

6、aughtandtraded/inthisindustry.Step4.ListeningBooksclosed.Playthetapes,letthestudentslistenandrememberimportantinformation.Step5Homework:1.完成课本3a、4a、4b.2.准备生词听写