九年级英语全册 Unit 13 We’re trying to save the earth Section A（3a-3b）课件 （新版）人教新目标版.ppt

Unit13,SectionA3a-3b,Weretryingtosavetheearth!,1.Whatdoyouknowaboutsharks?2.Doyouthinksharkscanbeendangered?Why?3.Whatdoyouthinkmightcauseafallinthenumberofsharks?,Thesharkisbeingkilled.,Themaniscuttingthefinoff.,Thesharksthathavenofinswillbethrownbackintotheoceanagain.,Thefinswillbedeliveredtothemarketsortherestaurants.,3aReadthepassageaboutsharksandcompletethefactsheetbelow.,SavetheSharks!Manyhaveheardofsharkfinsoup.ThisfamousandexpensivedishisespeciallypopularinsouthernChina.Butdoyourealizethatyourekillingawholesharkeachtimeyouenjoyabowlofsharkfinsoup?,听说过,鱼翅汤,中国南部,Whenpeoplecatchsharks,theycutofftheirfinsandthrowthesharkbackintotheocean.Thisisnotonlycruel,butalsoharmfultotheenvironment.Withoutafin,asharkcannolongerswimandslowlydies.Sharksareatthetopofthefoodchainintheoceansecosystem.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.Manybelievethatsharkscanneverbeenendangeredbecausetheyarethestrongestintheirfoodchain.,割断，切下,残忍的,对有害的,食物链,海洋生态系统,Butinfact,around70millionsharksarecaughtandtradedinthisindustryeveryyear.Thenumbersofsomekindsofsharkshavefallenby90percentinthelast20to30years.Environmentalprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicaboutfinning.Thenhaveevenaskedgovernmentstodeveloplawstostopthesaleofsharkfins.Sofar,noscientificstudieshaveshownthatsharkfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!,行业,野生救援协会,世界自然基金会,InsouthernChina,70million,Developlawstostopthesaleofsharkfins,WildAidandtheWWF,1.Manypeopledonotrealizetheyarekillingawholeshark_theyenjoyabowlofsharkfinsoup.2.Sharksareatthetopofthefoodchain,_iftheirnumbersdrop,theoceansecosystemwillbeindanger.,when,so,3bReadthepassageagainandfillintheblankswiththewordsinthebox.,3.Manythinkthatsharksaretoostrongtobeendangered,_theyarewrong.4._therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday_wedonotdosomethingtostopthesaleofsharkfins.,but,Although,if,1.Whatdopeopledowhentheycatchsharks?2.Whatwillhappentoasharkwithoutafin?3.Whatdothetwoenvironmentalprotectiongroupsaskthegovernmentstodo?4.Aresharkfinsgoodforhealth?,Theycutofftheirfinsandthrowthesharkbackintotheocean.,Theycannolongerswimandslowlydies.,Todeveloplawstostopthesaleofsharkfins.,Noscientificstudieshaveshown.,1.SavetheSharks!save作动词，意为“救，拯救”，后常跟介词from。Hesavedtheboyfromthebigfire.他从大火中救出了那个男孩。Thedogsavedthegirlslife.那只狗救了女孩的命。,2.Asharkcannolongerswimandslowlydies.nolonger意思是“不再”Imnolongerastudent.我不再是个学生了。,有两个短语和nolonger同义，即notanylonger和notanymore，但他们侧重的方面不同。nolonger和notanylonger侧重时间。Henolongerliveshere.=Hedoesntlivehereanylonger.他不在这儿居住了。(一个时间以前他住在这儿，过了这个时间，他就离开了。)notanymore侧重程度和数量。Youcandrinknomore.=Youcantdrinkanymore.你不能再喝了。(喝酒的量到了一定程度，不能再继续下去了。),3.harmful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。,4.Thismethodisnotonlycruel,butalsoharmfultotheenvironment.,notonlybutalso用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅而且”;其中的also有时可以省略。,Shenotonlyplayswell,butalsowritesmusic.她不但很会演奏，而且还会作曲。Notonlymenbutalsowomenwerechosen.不仅仅是男的，女的也有被选中的。,若连接两个成分作主语，其谓语通常与靠近的主语保持一致。Notonlyyoubutalsohehastoleave.不只是你，他也得离开。,notonly放在句首，后接句子时要用倒装结构。Notonlyhadthepoormanbeenfined,butalsohehadbeensenttoprison.这个可怜的人不仅被罚款，而且还被送进了监狱。,5.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.此句复数形式的numbers表达全海洋中鲨鱼的总量。当表示数值的高或低时，number要用high或low修饰。,Inthatcountry,thenumberofchildrengoingtoschoolishigherincitiesthanintownsandvillage.在那个国家，城市儿童入学人数比乡镇及农村要高。常与number搭配的动词有grow,fall等。,1.根据汉语意思完成句子(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。Wearegladtodowhatwecando_.(4)到目前为止，我已经交了二十个朋友。_,Ihavemadetwentyfriends.(5)实际上，她从没去过那儿。_,shehasneverbeenthere.,Infact,takeaction,heardof,tohelpout,Sofar,2.单项填空(1)Thegirlalwayshassomemoneyto_snacks.A.spendB.payforC.takeD.cost(2)Look!_boysareplayingontheplayground.Yes._themisabout200.A.Thenumberof；AnumberofB.Thenumberof；ThenumberofC.Anumberof；thenumberofD.Anumberof；Anumberof,B,A,(3)Areyougoingto_anyoftheevents?Yes.Maybelongjumpandhighjump.A.takepartinB.joinC.atten