英语人教版九年级全册Unit 13 Section A (3a -3b).ppt

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1、Unit13Wearetryingtosavetheearth!（SectionA3a-3b）九年级(人教版)镇巴泾洋初中张晓慧Objectives1.Tolearnsomekeywordsandusefulexpressions2.Tolearnsomethingaboutendangeredanimals--sharks.sharkfincruelharmfulbeharmfultoatthetopofchainthefoodchainecosystemindustrylawscientificn.鲨鱼n.（鱼）鳍adj.残酷的

2、；残忍的adj.有害的对......有害的在......顶部或顶端n.链子；链条食物链n.生态系统n.工业；行业n.法律；法规adj.科学上的；科学的WordsReviewListenandReadthepassageaboutsharksandfinishthesetasks.1.Listenandfindoutajactivesandsetphrases.2.Readandanswerquestions.3.Reviewthepassage.3aListening&Reading:Manyhaveheardofsharkf

3、insoup.ThisfamousandexpensivedishisespeciallypopularinsouthernChina.Butdoyourealizethatyou’rekillingawholesharkeachtimeyouenjoyabowlofsharkfinsoup?Whenpeoplecatchsharks,theycutofftheirfinsandthrowthesharkbackintotheocean.Thisisnotonlycruel,butalsoharmfultotheenvironmen

4、t.Withoutafin,asharkcannolongerswimandslowlydies.Sharksareatthetopofthefoodchainintheocean’secosystem.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.Manybelievethatsharkscanneverbeendangeredbecausetheyarethestrongestintheirfoodchain.Butinfact,around70millions

5、harksarecaughtandtradedinthisindustryeveryyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthelast20to30years.Environmentalprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernmentstodeveloplawstost

6、opthesaleofsharkfins.Sofar,noscientificstudieshaveshownthatsharkfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!WheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearHow...?Twoenvironmentalgroupsagainst"finning"70milliondevelopinglaw...WildAidandtheWWFSou

7、thernChinaReviewing:Somepeopleliketoeatsharkfinsoup,especiallyin_______China.Butgettingtheshark'sfinisvery_____.Whenpeoplecatchsharks,they________theirfinsandthrowthesharksintotheocean.Thesharkslowlydiesbecauseitcan't_____withoutthefin.Anditisalso______toenvironment.Sh

8、arksareatthe____ofthefoodchain.Ifthenumberofsharksdropstoolow,itwillbreakthebalanceofnuture.Pleasesaynotoeatingthesha