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Unit13We’retryingtosavetheearth!第2课时课件SectionA(3a-3b)Readthepassageaboutsharksandcompletethefactsheetbelow.3aWheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearhowmuchthenumbersofsomekindsofsharkshavefalleninthelast20-30yearsTwoenvironmentalgroupsagainstfinning70millionover90percentWildAidandtheWWFPointsinPara1hearof听说sharkfinsoup鱼翅汤insouthernChina=inthesouthofChina在中国南部地区eachtime每当…abowlof…一碗……Manyhaveheardofsharkfinsoup.ThisfamousandexpensivedishisespeciallypopularinsouthernChina.Butdoyourealizethatyou’rekillingawholesharkeachtimeyouenjoyabowlofsharkfinsoup?Manyhave听说鱼翅汤.Thisfamousandexpensivedishisespeciallypopular在中国的南部地区.Butdoyourealizethatyou’rekillingawholeshark每当youenjoy一碗sharkfinsoup?Whenpeoplecatchsharks,theycutofftheirfinsandthrowthesharkbackintotheocean.Thisisnotonlycruel,butalsoharmfultotheenvironment.Withoutafin,asharkcannolongerswimandslowlydies.Sharksareatthetopofthefoodchainintheocean’secosystem.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.PointsinPara2cutoff切掉notonly…butalso不仅，而且beharmfulto…对……有害withoutafin没有了鳍nolonger不再atthetopof…在……的顶部thefoodchain食物链intheocean’secosystem在海洋生态系统中danger危险---dangerous危险的Whenpeoplecatchsharks,they切掉theirfinsandthrowthesharkbackintotheocean.Thisis不仅cruel,而且对……有害theenvironment.没有了afin,asharkcan不再swimandslowlydies.Sharksare在食物链的顶部intheocean’s生态系统.Iftheirnumbersdroptoolow,itwillbring危险toalloceanlife.Manybelievethatsharkscanneverbeendangeredbecausetheyarethestrongestintheirfoodchain.Butinfact,around70millionsharksarecaughtandtradedinthisindustryeveryyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthelast20to30years.PointsinPara2endangered濒临灭绝的infact实际上catch-caught-caughtindustry工业，产业，行业fall-fell-fallenover90percent超过百分之九十inthelast20to30years在过去的20到30年里（用现在完成时）Manybelievethatsharkscanneverbe濒临灭绝的becausetheyarethestrongestintheirfoodchain.But实际上,around70millionsharksare捕捉andtradedinthis产业everyyear.Thenumbersofsomekindsofsharkshave在过去的20到30年下降了超过百分之九十.Environmentalprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernmentstodeveloplawstostopthesaleofshark’sfins.Sofar,noscientificstudieshaveshownthatshark’sfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!PointsinPara3environment-environmentalenvironmentalprotectiongroups环保组织suchas例如developlawstostopthesaleofsharkfins完善法律来组织预鱼鳍的销售sofar到目前为止（用现在完成时）scientificstudies科学研究show-showed-shown/showed环境保护组织aroundtheworld,例如WildAidandtheWWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernments完善法律来阻止鱼鳍的销售.到目前为止,no科学研究have表明thatshark’sfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!Let’slearnsomelanguagepointsharmful形容词，意为“有害的”。常构成短语beharmfulto“对……有害的”。Stayingupoftenisharmfultoyourhealth.经常熬夜对你的健康有害。【拓展】harm名词，意为“害处”。常用构成短语doharmto“对……有害”，相当于beharmfulto.Toomuchsmokingdoesharmtohishealth.=Toomuchsmokingisharmfultohishealth.吸烟过多对他的健康有害。改为同义句。Readinginthesundoesharmtooureyes.Readinginthesun_______________oureyes.isharmfulto辨析：join,joinin和takepartintojoin加入组织，团体，党派等，有作为其中的一个成员的含义;后面也可以加表示人的名词，表示和某人一起参加某活动joinin加入一种具体活动。takeaprtin指参加会议或群众性活动等，着重说明句子主语参加该项活动并在活动中发挥作用。Willyoujoinusinthediscussion?你参加我们的讨论吗？ShejoinedtheYoungPioneers.她加入了少先队。Whydidn'tyoujoininthetalklastnight?昨晚你为什么没参加座谈？Didyoutakepartinthesportsmeet?你参加运动会了吗？1.—Haveyou_____aclub?—Yes,I’minaswimmingclubandIoften_____theswimmingtraining.A.joined;takepartinB.joined;joinC.takenpartin;joinD.takenpartin;joinin2.—We’regoingforapicnic.Wouldyouliketo____us?—Whynot?Let’sgo!A.attendB.joinC.joininD.takepartin⑴afford是动词，意为“买得起,担负得起”，通常与can,could,beableto连用,多用于否定句中。Theycouldn’tafford$50foraticket.他们拿不出50美元买一张票。⑵afford后面常跟带to的动词不定式。Wecan’taffordtogoabroadthissummer.今年夏天我们没有足够的钱出国。例句：MissTaylorneverwastesmoneyonanythingtooexpensive,eventhoughshecan_____to.Shehasdonatedmuchofthemoneyshesavedtocharities.A.affordB.allowC.remindD.pay1.Manypeopledonotrealizetheyarekillingawholeshark_____theyenjoyabowlofshark’sfinsoup.2.Sharksareatthetopofthefoodchain,______iftheirnumbersdrop,theocean’secosystemwillbeindanger.Readthepassageagainandfillintheblankswiththewordsinthebox.sowhen3bsoalthoughifbutwhen3.Manythinkthatsharksaretoostrongtobe4.endangered,_________theyarewrong.5._________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.6.5.Sharksmaydisappearoneday______wedonotdosomethingtostopthesaleofsharkfins.7.butAlthoughIfII.单项选择。1.—Areyougoingto_____anyoftheevents?—Yes.Maybelongjumpandhighjump.A.takepartinB.joinC.attendD.joinin2.Ican’tafford____himanexpensivebirthdaypresent.A.tobuyB.buyingC.forbuyingD.buy3.—Rememberto____thelightswhenyouleavetheroom.—OK.Iwill.A.turnonB.turndownC.turnupD.turnoff4.Thegirlalwayshassomemoneyto___snacks.A.spendB.payforC.takeD.cost5.—Look!_____boysareplayingontheplayground.—Yes._____themisabout200.A.Thenumberof;AnumberofB.Thenumberof;ThenumberofC.Anumberof;thenumberofD.Anumberof;AnumberofIII.根据汉语提示完成句子。1.我们必须采取行动来阻止他们。Wemust___________tostopthem.2.我从没听说过这个人。Ihavenever________suchaman.3.我们乐意尽力帮你摆脱困境。Wearegladtodowhatwecand