人教新版英语九年级上册Unit13SectionA1a-2d课件(2).ppt

Unit13Weretryingtosavetheearth!,SectionA11a-2d,Theearthispolluted.,Lead-in,airpollution,Thefactoriesthatburncoalpollutetheairwithalotofblacksmoke.,n.煤炭,Factoriesputwasteintotheriver.,waterpollution,mobilephonepollution,litterv.乱扔n.垃圾rubbishwaste垃圾，废弃物,Peopleshouldthrowawaylitterinthebin.,n.垃圾箱,noisepollution,Therearemorecarsontheroad.,1a,Herearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.,noisepollution_,airpollution_,waterpollution_,loudmusic,planes,mobilephones,factories,cars,smoking,ships,factories,littering,rubbish,buildinghouses,buildinghouses,1b,Listenandcompletethesentences.,reallydirty,rubbish,fish,litter,waste,government,closedown,cleanup,Listenagainandcheck()thesentencesyouhear.,1.Wecouldgofishingintheriver.2.Theriverwasreallydirty.3.Theriverhasalwaysbeenthenicestriverinthistown.4.Weshouldasktheteachersforhelp.,1c,Role-playtheconversation,Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.,Butitusedtobesoclean!,Yes,butpeoplearethrowinglitterintotheriver.,Everyoneinthistownshouldplayapartincleaningitup!,Practice,Makeconversationsusingthepollutionin1a.,Theriverhasalwaysbeenthenicestriverinthistown.,Yes,itusedtobesoclean.,Whatcausedtheproblem?,ButIwastherelastweekendandtheriverwasreallydirty.,Factoriesarealsoputtingwasteintotheriver.,Peoplearethrowinglitterintotheriver.,Whatshouldwedo?,Yes,everyoneinthistownshouldplayapart.,Weshouldwritetothegovernmentandaskthemtoclosedownthefactories.,Whatelsecanwedo?,Everyoneshouldhelptocleanuptheriver.,1.Weretryingtosavetheearth!我们正在竭尽全力拯救地球!trytodo=tryonesbesttodo努力去做某事。e.g.Everystudentshouldtrytostudyhardinordertostudyinauniversity.为了进入大学学习，每个学生都应该努力学习。,Languagepoints,2.Herearesomewordsrelatedtodifferentkindsofpollution.berelatedto与有关e.g.Iamnotrelatedtohiminanyway.我和他无任何关系。,3.Everyoneinthistownshouldplayapartincleaningitup!playapartin在方面起作用e.g.Agooddietplaysalargepartinhelpingpeoplelivelonger.健康的饮食在帮助人们长寿方面起着非常大的作用。,playapart在中扮演角色e.g.HewasinvitedtoplayapartinthisTVplay.他被邀请参加这个电视剧的演出。,4.Eventhebottomoftheriverwasfullofrubbish.Yes,butpeoplearethrowinglitterintotheriver.,litter和rubbish都可指“垃圾”，用作不可数名词。rubbish指“没用的东西(被扔或将要丢弃的无用的东西)”不可回收。,litter指“(室内或公共场所)乱扔的废物(纸屑、不要的包装纸、废瓶等)”还可回收。e.g.Throwtherubbishout.把垃圾扔出去。Theroomisfullofrubbish.房间里堆满了垃圾。Pickupyourlitterafterapicnic.野餐后将废弃物收拾好。,2a,Listentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.,landpollutionB.airpollutionC.noisepollutionD.waterpollution,2b,Listenagainandcompletethesentences.,1.Theairisbadlypollutedbecausethereare_ontheroadthesedays.2.Factoriesthatburncoalalso_theairwithalotofblacksmoke.,morecars,pollute,3.Thereisalsotoomuchrubbishandwaste.People_thingseveryday.4.Peoplearealsolitteringin_likeparks.Thisisturningbeautifulplacesintougly(丑陋)ones.,arethrowingaway,publicplaces,Listenandanswerthequestions.,1.Whoistheinterviewertalkingto?2.Whataretheytalkingabout?3.Whatotherproblemsdotheysee?,SusanandJason.,Theenvironmentalproblems.,Therestoomuchrubbishandwasteinthestreets.,Role-playconversationsbetweenJasonandSusan.,2c,Theairhasbecomereallypollutedaroundhere.Imgettingveryworried.,Yes,Iusedtobeabletoseestarsinthesky.,Theproblemisthat,Whatshouldwedotosavetheearth?,Turnoffthelightswhenyouleavearoom.,关掉,stopridingincars,stopusingpapertowelsornapkins（餐巾，餐巾纸）,recyclebooksandpaper,回收利用,2d,Read2dandcompletethechart.,takethebus,subwayorrideabikeinsteadofdriving.,bringabagtogoshopping.,usechopsticksorforksathome.,throwrubbishinthebins.,Role-playtheconversation,JasonandSusan,whatareyourideasforsolvingtheseproblems?,Yeah,orrideabike.Thereareotheradvantages(优点)ofbikeriding.Itsgoodforhealthanditdoesntcost(花费)anything!,Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.,Greatideas!Whataboutwastepollution?,Me,too.Also,Inevertakewoodenchopsticksorplastic(塑料)forkswhenIbuytakeaway(外卖食品)food.Iusetheonesathome.,Mmm,Ithinksimplethingslikebringingabagtogoshoppingcanhelp.Istarteddoingthatayearago.,Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.,Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!,Thisisturningbeautifulplacesintouglyones.turninto把变成,e.g.Theicyrainseemedliketoturnintosnow.渐渐地冻雨又变成雪花的模样。,Languagepoints,2.Itsgoodforhealthanditdoesntcostanything!costv.花费；使付出指花费金钱，主语通常是物。cost的过去式和过去分词均为cost。,e.g.ThenewshirtcostMrWang200yuan.王先生花了200元买了新衬衫。Howmuchdoesthenewcomputercost?新电脑花了多少钱？,take,spend,pay其中的also有时可以省略。,e.g.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。e.g.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。e.g.Notonlyhadthepoormanbeenfined,butalsohehadbeensenttoprison.这个可怜的人不仅被罚款，而且还被送进了监狱。,beharmfulto对有害e.g.Smokingisharmfultothehealth.吸烟有害健康。Playingcomputergamesmuchisharmfultostudents.电脑游戏玩太多对学生有害。,3.Sharksareatthetopofthefoodchainintheoceansecosystem.鲨鱼位于海洋生物系统食物链的顶部。,atthetopof在最高地位;用最高最大的(速度,声音等)e.g.Ilookedatthetopofhishead,hishairshinyandpartedsmoothly.我看他的头顶,头发闪亮且平滑的分开。,Heshoutedatthetopofhisvoiceinorderthathemightbeheard.他尽力大声叫喊,以便别人能听见。,4.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.如果它们的数目降至过低，会给所有海洋生物带来危险。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。,e.g.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。e.g.Thenumberoffamiliesthatowncarshasbeengrowingquicklyrecently.近来拥有轿车的家庭数量增长很快。,5.Environmentprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.世界各地的环境保护组织，如野生救援协会和世界自然基金会，都在教育公众有关“猎翅”的行为。1)句中fin本为名词，指“鱼鳍”。此句中的finning由动词化的fin（割鲨鱼鳍以获取鱼翅）的-ing形式转化而成，指课文中所陈述的“猎翅”这一行为。,2)WildAid和WWF组织WildAid（美国野生救援协会）是保护野生动物及栖息地环境的一个非盈利性的机构，1999年注册成立，其宗旨是保护及救助世界范围内的野生动物；WWF（世界自然基金会）英文全称为WorldWideFundforNature，成立于1961年，是享有国际盛誉，全球最大的独立性非政府环境保护组织之一。,Homework,Write5measurestoprotecttheenvironment.,Unit13,Weretryingtosavetheearth!,SectionB11a-2e,Ithinkthateveryoneshouldusepublictransportation.,Idisagree.Itsdifficultforparentswithyoungchildrentousepublictransportation,Revision,Butwecandootherthings.Forexample,wecangotoschoolonfoot.,Youareright.Weshouldturnoffthelightswhenweleavetheroom.,Yes,wecanusereusablebagsinsteadofplasticbagswhenwegoshopping.,Weshouldalsothrowlitterintodustbins.,Dontusepapernapkins.,n.餐巾纸,Warmingup,Howcanwedotohelpsavetheearth?,Youcanhelpreducepollutionbyputtingthatsodacaninadifferentbin.,Leaveyourcarathome.Takeabusorrideyourbiketowork.,Turnoffthelightswhenyouleavearoom.,Turnofftheshowerwhileyouarewashingyourhair.,recyclebooksandpaper,v.回收利用；再利用,Whatcanwedotohelpsavetheearth?Ranktheseitemsfromtheeasiest(1)tothemostdifficult(5).,_stopridingincars_recyclebooksandpaper_turnoffthelightswhenyouleavearoom_turnofftheshowerwhileyouarewashingyourhair_dontusepapernapkins,5,4,1,3,2,1a,Recyclingpaperisreallyeasy.,Iagree.Butitshardtostopridingincars.,1b,Compareyouranswersin1awithyourpartner.,Listenandcheck()thethingsthatJuliaandJacktalkabout.,1c,1d,Listenagain.Check()thethingsthatJuliaisdoingnow,thethingsshewilldointhefutureandthethingsshewouldneverdo.,Listenagainandanswerthequestions.,Whoreadabook?WouldJuliaturnofftheshowerwhensheiswashingthehair?3.DoesJackliveclosetoschool?,Jack.,No,shewouldneverdothat.,Yes,hedoes.,Role-play,1e,Wereallyshouldntusepapernapkins,youknow.,Iknow.Istoppedusingthemlastyear.,Makeaconversationusingtheinformationfromthechartabove.Saywhatistrueforyou.,Youshouldturnofftheshowerwhenyourewashingyourhair.,Oh,Iwouldneverdothat.Ihaveveryshorthair,itonlytakesafewminutestowash.,Weshouldtakeourownbagswhenwegoshopping.,Oh,thatseasy.Illdothatfromnowon.,presidentn.负责人；主席；总统,workn.(音乐、艺术)作品,metaln.金属,Presentation,Lookatthetitleandthepicturesin2b.Canyouguesswhatthepassageisabout?,2a,Rethink,Reuse,Recycle!,Reading,Readthepassageandanswerthequestions.,WhoisAmyHayes?2.Howmanypeoplearementionedinthepassage?Whoarethey?,SheisaunusualwomanintheUK.,Three.TheyareAmyHayes,JessicaWongandWangTao.,AmyHayes,windowsanddoorsofoldbuildingsthathavebeenpulleddownanoldboatrocksoldglassbottles（n.瓶子）,ahouse,Readthepassageandcompletethechartbelow.,2b,JessicaWong,WangTao,oldclothes;especiallyoldjeans,bags,iron(n.铁)andothermaterialsfromoldcars,beautifulartpieces,Didshewinanaward?Whatwasitfrom?2.Wheredidherwindowsanddoorscomefrom?,Readparagraph2andanswerthequestions.,Yes,shedid.ItwasfromtheHelpSaveOurPlanetSociety.,Theycamefromoldbuildingsaroundhertownthatwerepulleddown.,她住在英国，房子是她自己用废弃物建造而成。,3.Whatdoesthesentence“shelivesinahouseintheUKthatshebuiltherselfoutofrubbish”mean?,Readparagraph3andanswerthequestions.,IsJessicaWonggoodatrecycling?Whatdoesshedo?2.Wheredoesshesellherbags?3.Whatwillshewriteinherbook?,Yes,sheis.Sheusesoldclothesthatpeopledontwearanymoretomakebags.,Hershopandwebsite.,Newwaystouseoldclothes.,Readparagraph4andanswerthequestions.,WhatdoesWangTaohopetosetup?Why?,A“metalart”themepark.Becausehewantstoshowpeopletheimportanceofenvironmentalprotection.,2.Translatethesentence“Notonlycantheartbringhappinesstoothers,butitalsoshowsthatevencold,hardironcanbebroughtbacktolifewithalittlecreativity.”intoChinese.,艺术不但可以给人们带来快乐，而且也说明只需要一点创造力，即使是冰冷、坚硬的铁也可产生活力。,Doyouoftenthrowawaythingsyoudontneedanymore?1)throwaway扔掉，丢弃浪费(机会、优势或好处),e.g.Ineverthrowanythingaway.我从来不扔任何东西。,Languagepoints,e.g.Dontthrowawaythisopportunity.不要错过这个机会。,3)浪费(时间、金钱等)乱花(钱等)e.g.Itwillbetimeandmoneythrownaway.这将是浪费时间和金钱。,2)错过(机会等)，放过；未能很好利用(机会等),e.g.Yourcreativetalentscanalsobeputtogooduse,ifyoucanworkuptheenergy.如果你能让自己精力充沛起来，你的创作才能也能得到很好的发挥。,2.Haveyoueverthoughtabouthowthesethingscanactuallybeputtogooduse?,putsth.togooduse好好利用,3.ShelivesinahouseintheUKthatshebuiltherselfoutofrubbish.,build/make.outof用建造/制造,e.g.Hebuiltamodelshipoutofwood.他用木头造了个模型船。Somebirdsbuildnestsoutoftwigs.一些鸟用小枝筑巢。,4.Thetopofthehouseisanoldboatturnedupsidedown.turnedupsidedown意为“被翻转过来的；被颠倒过来的”，做后置定语修饰boat。e.g.Tonyhadanupside-downmapofBritainonhiswall.托尼的墙上倒挂了一张英国地图。Thelid,turnedupsidedown,servedasacoffeetable.那个盖子被翻过来当作咖啡桌。,5.Andthegateinfrontofherhouseismadeofrocksandoldglassbottles.,bemadeof和bemadefrom都表示“由制成”，但二者的用法有区别。bemadeof常常表示原材料未发生化学变化，从成品中仍可看出原材料；而bemadefrom常常表示原材料经过化学变化，从成品中看不出原材料。,e.g.Thedesksandchairsaremadeofwood.这些课桌椅是木材制成的。Thiskindofwineismadefromwheat.这种酒是用小麦制成的。,6.Heisknownforusingiron.,beknownfor因而著名beknownas作为而著名beknownto对于某人来说是著名的,e.g.Hewasknownforhisfriendly.他以友好而著称。,Heisknowntothepoliceasathief.对警察来说是一个小偷。ZhouJielunisknownasarapsinger.周杰伦是作为一个说唱歌手而出名。,7.Notonlycantheartbringhappinesstoothers,butitalsoshowsthatevencold,hardironcanbebroughtbacktolifewithalittlecreativity(n.创造力).,bringback恢复；使想起；归还,notonly.but(also).表示“不但而且”。本句中的notonly位于句首，其后的主谓要部分倒装，即根据主语的人称和数以及时态的变化，将不同的助动词提到主语前，需要注意的是but(also)后面的主谓不用倒装。例如：Notonlydidmyauntteachatschool,but(also)shewrotearticlesfornewspapers.我阿姨不仅在学校教书而且还给报纸写稿。,2c,Fillintheblankswiththecorrectformsofthephrasesinthebox.,AmyHayeslivesintheUK.Manyoftheoldbuildingsinherneighborhoodwere_.,pulleddown,2.AlltherubbishandoldthingsinAmysneighborhoodwerethen_whenAmybuiltherhouse.3.Amyisverycreative.She_herfrontgate_rocksandoldglassbottles.Sheputanoldboatontopofherhouse.,put,built,outof,togooduse,4.JessicaWongsellsherbagsinasmallshop,butshehasalso_anonlinebusinesstosellthem.5.ThoughJessicasbagsaremakefromoldclothes,herbagsare_beingcuteanduseful.,setup,knownfor,6.WangTao_makeslargepiecesofmetalartthatlooklikeanimalsorhumans,_makessmallerpiecesforthehome.,notonly,butalso,2d,Underlinethewordsinthepassagebasedonthewordsbelow.Whatarethedifferences?,thinkrethinkspecialespeciallyusereuse,usefulrecentrecentlyusualunusualenvironmentenvironmentalrecyclerecyclingimportantimportancebuildbuildingprotectprotectioncreatecreative;creativityinspireinspiration,1.Rethink,Reuse,Recycle!,re-是最常用的前缀之一。它可以加在名词或动词前面，构成新的名词或动词。re-表示以下三方面的意义：,1)表示“回”或“向后”的意思。例如：return（回来）recall（回忆，召回）retract（缩回，取回）,2)表示“再”、“重新”、“重复”的意思。例如：rethink（再思考）reuse（再运用）restart（重新开始）recycle（再利用）,3)表示“相反”、“反对”的意思。例如：rebel（反叛，谋反）reverse（反转，颠倒）resist（反抗，抵抗）,2.Sheisamostunusualwoman.,un-前缀，常加在形容词、副词、分词、动词和名词之前；第一，表示否定意义。第二，表示“反动作”。即“相反的动作”。例如：uneconomic不经济的uncomfortable不舒服的unending无尽的unfortunate不幸的unusual不平常的unkind不仁慈的unbind解开，释放uncover揭开的盖子unearth由地下掘出unbutton解开钮扣,3.Nothingisawasteifyouhaveacreativemind.,-ive是形容词后缀一般表示有.的create-ivecreative,4.AmyrecentlywonaprizefromtheHelpSaveOurPlanetSociety.recent-lyrecently形容词加ly变副词,5.Amyisaninspiration(n.灵感)tousall.,后缀-tion附在动词后面构成名词,1)当单词最后是t,d,te,de时，变名词加tion或者ation,ition；2)当单词最后是元音字母时，变名词加sion等。,6.Sheespeciallylikestouseoldjeanstomakehandbags.special和especial是同义词，especially是especial的副词。,7.Thethemeparktoshowpeopletheimportanceofenvironmentalprotection.,importance是important的名词。environmental是environment的形容词形式。protect-ionprotection,2e,Makealistofthingsthatneedtobedonetosavetheenvironment.Whichthingscanbedonebycommonpeopleeveryday?,Whichthingshavetobedonebygovernmentsandorganizations?Discussthesewithyourgroup.,Surveythestudentsinourclass.Thentakeaclassvote.,Unit13Weretryingtosavetheearth!,SectionB23a-SelfCheck,Revision,1.停止乘小汽车2.回收纸3.用纸巾4.好好利用5.用垃圾建造房子6.倒置7.经营小生意,stopridingincars,recyclepaper,usepapernapkins,puttogooduse,buildahouseoutofrubbish,turnupsidedown,setupasmallbusiness,8.回复，归还9.旧玻璃瓶10.拆下11.一个有创意的大脑12.开一个小店13.更受欢迎的作品14.给他人带来欢乐,bringback,oldglassbottles,pulldown,acreativemind,openasmallshop,morepopularworks,bringhappinesstoothers,Talkabout2bwithyourpartner.,HaveyouheardofAmyHayes?,SheisamostunusualwomanwholivesintheUK.,Whyissheunusual?,Becauseshebuiltherhouseoutofrubbish.,Whatishergatemadeof?,Itsmadeofrocksandoldglassbottles.,WhereisJessicaWongfrom?,SheisfromHongKong.,Whatdoesshedo?,Sheusesoldclothesthatpeopledontwearanymoretomakebags.,Howdoesshesellherbags?,Sheopensasmallshopandsetupawebsitetosellthem.,AndwhatisWangTaoknownfor?,Heisknownforusingironandothermaterialsfromoldcarstomakebeautifulartpieces.,Whatdoeshehopetodo?,Hehopestosetupa“metalart”themeparktoshowpeopletheimportanceofenvironmentalprotection.,Warmingup,Whatshouldwedotosavetheearth?,Turnoffthelightswhenweleavearoom.,Takeourownbagswhenshopping.,Rideabike.,Recyclepaper.,Dontusepapernapkins.,Whatshouldgovernmentsdotosavetheearth?,Theyshouldclosedownthefactoriesthatputwasteintotheriver.,Setupalotofdustbinsonthestreet.,Stoppeoplefromusingwoodenchopsticks,plasticbowlsandbags.,Organizepeopletocleanupthestreetsandrivers.,Thinkabouttheenvironmentinyourtown/cityandcompletethechartbelow.,Whichpartsofthetown/cityhaveaniceenvironment?Whyaretheynice?Whichpartsneedtobeimproved?Why?,3a,park,theairisclean,streets,somanytrees,restaurants,cleanandtidy,river,alotofrubbish,somanycars,air,toomanyfactories,streets,3b,Writing,Writealettertothecitymayorabouttheproblemsandyoursuggestions.,Inyourletter,describetheenvironmentalproblemsinyourtown/city.1.Whataretheproblems?2.Wherearethey?3.Whatorwhoiscausingtheseproblems?,Then,givesuggestionsorpossiblewaystosolvetheproblems.IthinkthatWeshould/couldIsuggest,写作指导,本次写作内容是一封书信，信中首先要介绍你所在城市存在有哪些环境问题，是谁造成的这些问题，然后提出解决这些环境问题的方法和措施，可以结合3a中列举的问题和前面学过的解决办法来完成这封信。,Onepossibleversion,DearSir/Madam,Environmentalproblemsarebecomingmoreandmoreseriousallovertheworld.Withthedevelopmentofthesociety,therearetoomanycarsonthestreetsinourcity.Carshavemadetheairunhealthyforpeopletobreathe.Blacksmokeandpoisonousgasaregivenoffbyfactories.Factoriesalsoputwasteintotheriver.Andwhereverwego,wecanfindrubbish.,Nowmoreandmorepeoplehaverealizedtheseproblems.Ithinkthatgovernmentsshouldclosedownthefactoriesanddeveloplawstostoppeoplefromdrivingcarseveryday.Isuggesteveryoneinthistownshouldhelptocleanuptheriverandthestreets.Weshouldcalloneveryoneinthetowntothrowrubbishinthedustbins.Ihopetheproblemwillbesolvedinthenearfutureandourhomewillbecomebetterandbetter.,SelfCheck,1.Writedifferentformsofthewords.Thenaddmoretoeachgroup.,v.n.,pollute-act-protect-inspire-build-create-,farm-sing-travel-drive-run-write-,pollutionactionprotectioninspirationbuildingcreation,farmersingertravelerdriverrunnerwriter,n.adj.,fame-wood-science-health-south-care-,rain-cloud-luck-help-color-day-,famouswoodenscientifichealthysoutherncareful,rainycloudyluckyhelpfulcolorfuldaily,adj.n.,sunny-noisy-harmful-beautiful-different-important-woolen-,sunnoiseharmbeautydifferenceimportancewool,adj.adv.,slow-wide-sudden-real-quick-true-possible-,happy-loud-quiet-heavy-easy-angry-good-,slowlywidelysuddenlyreallyquicklytrulypossibly,happilyloudlyquietlyheavilyeasilyangrilywell,2.Matcheachstatementwiththegrammarstructure.,3.Writewaystocutdownonthesekindsofpollution.,stopfactoriesfromthrowingwasteintorivers.,Trynottouseplasticbagswhenshopping,Cutdownthenumberofcars.,Reducethenumberoffactoriesthatburncoal.,Homework,Finishyourpassageof3b.,Unit13Weretryingtosavetheearth!,SectionA3GrammarFocus-4c,Revision,不同种类的污染2.河底3.把垃圾扔到河里4.在中起作用,differentkindsofpollution,thebottleoftheriver,throwrubbishintotheriver,playapartin,I.Checkifyouknowthesephrases.,5.在中国南部6.对有害7.在顶部8.海洋生态系统,insouthernChina,beharmfulto,atthetopof,theoceansecosystem,II.Translatethesentences.,1.甚至是河底都满是垃圾。2.这个方法不仅残酷还对环境有害。,Eventhebottomoftheriverwasfullofrubbish.,Thismethodisnotonlycruel,butalsoharmfultotheenvironment.,3.鲨鱼处于海洋食物链的顶部。4.许多人相信鱼翅对健康有好处。,Sharksareatthetopofthefoodchainintheoceansecosystem.,Alotofpeoplebelievethatsharksfinsaregoodforhealth.,Payattentiontothesentences.1.Weretryingtosavetheearth.2.Theriverusedtobesoclean.3.Theairisbadlypolluted.4.Noscientificstudieshaveshownthatsharkfinsaregoodforhealth.5.Weshouldhelpsavethesharks.,Presentprogressive,usedto,Passivevoice,Presentperfect,GrammarFocus,Modalverbs,现在进行时:PresentProgressive,结构:be(am/is/are)+v.-ing标志词：Look,Listen,now,rightnowe.g.Look!Theboyiscrying.,定义：表示说话时(瞬间)正在进行的动作,也表示目前或现阶段正在进行的动作。,Whatafineday