3a课文(课堂PPT)

1,Unit13Weretryingtosavetheearth.SectionA(3a-3b)PeriodTwo,安石一中蔡凤仙,2,Usesomewordstodescribethesharks.,3,3aSavetheSharks!,4,预习检测：,鲨鱼_鱼鳍_残忍的_生态系统_工业_法律_科学上的_在的顶部或顶端_食物链_对有害_,fin,shark,cruel,industry,ecosystem,law,scientific,atthetopof,thefoodchain,beharmfulto,5,Teachingaimsanddemands:,Readandtranslatethepassagefluently.Graspthekeywords,phrasesandsentences.Answerthequestionsaccordingtothepassageandfinishtheexercises.,6,Readthefirstsentenceineachparagraphandmatchthemainideas.,Paragraph1Paragraph2Paragraph3,Environmentalprotectiongroupsareagainst“finning”.Somebasicfactsaboutsharkfinsoup.Someimportantfactsaboutkillingsharks.,7,1.Sharkfinsoupisfamousandexpensivearoundtheworld.()2.Youarekillingawholesharkwhenyouenjoyabowlofsharkfinsoup.()3.Asharkcanswimwithoutafin.()4.Infact,about7,000,000sharksarecaughtandtradedinthisindustryeveryyear.()5.Scientificstudieshaveshownthatsharkfinsaregoodforhealth.(),Listentothetapeandjudgethestatements.(TorF),T,F,F,F,F,8,TaskOne:Readandtranslatethewholepassage.Andthenfindoutthekeyphrasesandsentences.,Paragraph1&Paragraph3(readitbyyourselfandtranslatewithyourpartner)Paragraph2(readitbyyourselfandtranslateinyourgroup),TaskTwo:Findoutthekeyphrasesandsentences.,9,Manyhaveheardofsharkfinsoup.ThisfamousandexpensivedishisespeciallypopularinsouthernChina.Butdoyourealizethat(youarekillingawholesharkeachtimeyouenjoyabowlofsharkfinsoup.)Whenpeoplecatchsharks,theycutofftheirfinsandthrowthesharkbackintotheocean.Thisisnotonlycruel,butalsoharmfultotheenvironment.Withoutafin,asharkcannolongerswimandslowlydies.Sharksareatthetopofthefoodchainintheoceansecosystem.Iftheirnumbersdropstolow,itwillbringdangertoalloceanlife.Manybelievethat(sharkscanneverbeendangeredbecausetheyarethestrongestintheirfoodchain.)Butinfact,around70millionsharksarecaughtandtradedinthisindustryeveryyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthelast20to30years.Environmentalprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernmentstodeveloplaws(tostopthesaleofthesharkfins.)Sofar,noscientificstudieshaveshownthat(sharkfinsaregoodforhealth,)sowhyeatthem?Helpsavethesharks.,10,hearof听说cutoff切掉，切除切断（水、电）；中断；关掉notonlybutalso不但而且beharmfulto对有害atthetopof在的顶部、顶端thenumberof的数量sofar到目前为止（现在完成时）,Importancephrases:,11,Finishtheexercises,InsouthernChina.,Around70million.,Theycandeveloplawstostopthesaleofsharkfins,WildAidandWWF,12,1.Manypeopledonotrealizetheyarekillingawholeshark_theyenjoyabowofsharkfinsoup.2.Sharkareatthetopofthefoodchain,_iftheirnumbersdrop,theoceanssystemwillbeindanger.3.Manythinkthatsharksaretoostrongtobeendangered,_theyarewrong.4._therearenoscientificstudiestosupportthis,alotofpeoplebelievesthatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday_wedonotdosomethingtostopthesa