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1、Unit 5 Using Language Reading for writingWhich tomatoes do you prefer?Why?Chemical tomatoesOrganic tomatoesWarming-up1.Whatisthefarmerdoinginthepicture?Sprayingchemicalpesticidesonthecrops.v.喷洒n.杀虫剂Wearingamaskandhat.2.Whatisthefarmerwearing?Why?Itmayharmpeopleshealth.ChemicalVersusOrganicFarmingPre
2、diction1.Whatisthetextabout?ChemicalfarmingOrganicfarming(definition,benefit,problem.)picturestitle2.Whattypeofwritingisit?A.NarrationB.ExpositionC.ArgumentationWhatarethebenefitsandproblemsofchemicalfarming?ParagraphMainIdeaDetailBenefitsProblemsPesticidescankillhelpful_Somepesticideshavebeen_becau
3、seofthe_.Cropsgrownwithchemicalfertilizersusually_tobefullof_.chemicalfarming1-2Chemicalfarmingisfarmingwith_,especially_and_.Readfordetails_(化学农药和人工肥料)havebeeninwidespreaduseinfarmingsincethemiddleofthe20thcentury.Whentheywerefirstintroduced,manyfarmerswelcomedthemasagreatwayto_(抵御作物病害、增加产量).Overti
4、me,however,whatsomescientistshavefoundisthat_(长期使用它们有时会危害土地和人类健康).Chemicalpesticidesandartificialfertilizersdiseaseandincreaseproductiontheirlong-termusecansometimesharmboththelandandpeopleshealthPara 1CHEMICAL VERSUS ORGANIC FARMINGfightcropReadforusefulexpressionsReadforwritingusefulexpressionsFor
5、example,pesticidescandamagethelandby_(杀死有害细菌和昆虫的同时，也杀死有益的细菌和昆虫).Inaddition,thesechemicalscanstayinthesoilandundergroundwatersourcesforalongtime.Thisaffectsthecropsgrownonthelandand,_(继而影响消化这些作物的人畜).Manypeopleworrythatthesechemicalsmay_(致病，甚至引发癌症).Infact,somepesticideslikeDDThavebeenprohibitedinmostc
6、ountriesbecauseofthedamagetheycausetopeopleandtheenvironment.Asforchemicalfertilizers,cropsgrownwiththemusually_(生长过快而营养不足).Theymaylookbeautifulontheoutside,butinsidethereisusuallymorewaterthan_(必需矿物质),andtheyoften_(口感较差)aswell.killingnotonlyharmfulbacteriainturn,theanimalsandhumanswhodigestthemmake
7、themillandevencausegrowtoofasttoberichinnutritionessentialmineralshavelessflavorPara2andinsects,butalsohelpfulonescancerWhatarethebenefitsandproblemsofchemicalfarming?ParagraphMainIdeaDetailBenefitsProblemsPesticidescankillhelpful_Somepesticideshavebeen_becauseofthe_.Cropsgrownwithchemicalfertilizer
8、susually_tobefullof_.chemicalfarmingfightcropdiseasesandincreaseproductionbacteriaandinsectsprohibiteddamagetheycausedgrowtoofastnutritionPart1:(Para1-2)Thebenefitsandproblemsofchemicalfarming.1-2Chemicalfarmingisfarmingwith_,especially_and_.chemicalschemicalpesticidesartificialfertilizersReadfordet
9、ailsReadfordetailsPara3-4ParagraphMainIdeaDetail3WhatorganicfarmingisManyorganicfarmersuse_asfertilizer.4OrganicmethodsforproducingrichsoilTheyoften_grownineachfield.Theyalsoplantcropsthatuse_ofthesoiltohelpkeepitrich.Organicfarmingissimplyfarming_.Readforwritingusefulexpressions_(作为一种替代方法),somefarm
10、ershaveswitchedto_(有机耕作),andmanycustomershaveturnedto_(有机食品)whentheyshopatthelocalgrocery.Organicfarmingissimplyfarming_(不使用任何化学品).Organicfarmersfocuson_(通过天然的方法保持土壤肥沃，没有病害).Forexample,manyorganicfarmersusenaturalwastefromanimalsasfertilizer.This_(使农田土壤富含矿物质).Italsokeepstheair,soil,water,andcropsfre
11、eofchemicals.AsanalternativeorganicfarmingorganicfoodwithoutusinganykeepingtheirsoilrichandfreeofdiseasethroughnaturalmeansmakesthesoilintheirfieldsricherinmineralsPara3chemicalsReadforwriting1(usefulexpressions)Organicfarmersalsousemanyothermethodstoproducerichsoil.Theyoften_(每年更换每块农田种植的作物种类).Forin
12、stance,theymaygrowcornorwheatinafieldoneyear,andthengrowbeanstherethenext.Why different crops are grownisbecausetheyputimportantmineralsbackintotheground,makingitreadyforthenextbatchofcrops.Organicfarmersalso_(种植土壤深度要求不同的多样化作物)tohelpkeepitrich.Forexample,peanutsgrowonthegroundssurface,butmanyotherve
13、getablesputdowndeeproots.Thegoalofusingdifferentorganicfarmingmethodsisto_(生产优质食物，同时避免损害环境和人类健康).changethekindofcropgrownineachfieldeveryyearplantdiversecropsthatusedifferentgrowgoodfoodwhileavoidingdamagetotheenvironmentortopeopleshealth.Para 4depthsofsoilReadfordetailsPara3-4ParagraphMainIdeaDetai
14、l3WhatorganicfarmingisManyorganicfarmersuse_asfertilizer.4OrganicmethodsforproducingrichsoilTheyoften_grownineachfield.Theyalsoplantcropsthatuse_ofthesoiltohelpkeepitrich.changethekindofcropdifferentdepthsnaturalwastefromanimalsOrganicfarmingissimplyfarming_.withoutchemicalsReadforwritingusefulexpre
15、ssionsSomepeoplewouldprefertostoptheuseofman-madechemicalsinagricultureentirely.Whatkeepsthemfromdoingsoisthefactthatchemicalfarming_(满足了全世界对事物的高要求).Organicfarmingisnowherenearabletomeetthatneed.Therefore,_(想要找到一个合适的解决方案，使人类和环境尽可能保持健康，又让人们有足够的食物可吃，还有很长的路要走).servesthehighdemandforfoodaroundtheworldsu
16、itablesolutionthatputssufficientfoodonthedinnertablewhilekeepingpeopleandtheenvironmentashealthyaspossible.Para5thereisstillalongwaytofindaWhyman-madechemicalsarestillusedinfarmingPara5Part1:(Para1-2)Part2:(Para3-4)Part3:Thebenefitsandproblemsofchemicalfarming.Whatorganicfarmingisandorganicmethodsfo
17、rproducingrichsoil.Thereisstillalongwaytogobeforebalancingsufficientfoodandthehealthofpeopleandenvironment.ReadforthemainideasandstructuresReadfordiscourse markersReadfordiscoursemarkersChemicalpesticidesandartificialfertilisershavebeeninwidespreaduseinfarmingsincethemiddleofthe20thcentury.Whentheyw
18、erefirstintroduced,manyfarmerswelcomedthemasagreatwaytofightcropdiseaseandincreaseproduction.Overtime,_,whatsomescientistshavefoundisthattheirlong-termusecansometimesharm_theland_peopleshealth._,pesticidescandamagethelandbykilling_harmfulbacteriaandinsects,_helpfulones._,thesechemicalscanstayintheso
19、ilandundergroundwatersourcesforalongtime.Thisaffectsthecropsgrownonthelandand,inturn,theanimalsandhumanswhodigestthem.CHEMICALVERSUSORGANICFARMINGhoweverbothandForexamplenotonlybutalsoInadditionManypeopleworrythatthesechemicalsmaymakethemillandeven cause cancer._,some pesticides like DDT havebeenpro
20、hibitedinmostcountriesbecauseofthedamagetheycausetopeople and the environment._ chemical fertilisers,cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.Theymaylookbeautifulontheoutside,_insidethereisusuallymorewaterthanessentialminerals,_theyoftenhavelessflavour_._,some farmers have switched to
21、 organicfarming,andmanycustomershaveturnedtoorganicfoodwhentheyshopatthelocalgrocery.Organicfarmingissimplyfarmingwithoutusinganychemicals.In factAs forbutandas wellAs an alternativeOrganicfarmersfocusonkeepingtheirsoilrichandfreeofdiseasethrough natural means._,many organic farmers usenaturalwastef
22、romanimalsasfertiliser.Thismakesthesoilintheirfieldsricherinminerals.It_keepstheair,soil,water,andcropsfreeofchemicals.Organicfarmers_usemanyothermethodstoproducerichsoil.Theyoftenchangethekindofcropgrownineachfieldeveryyear._,theymaygrowcornorwheatinafieldoneyear,and then grow beans there the next.
23、_theyputimportantmineralsbackintotheground,makingitreadyforthenextbatchofcrops.For examplealsoFor instancealsoWhy different crops aregrown is becauseOrganicfarmers_plantdiversecropsthatusedifferentdepthsofsoiltohelpkeepitrich._,peanutsgrowonthegroundssurface,_manyothervegetablesputdowndeeproots.Theg
24、oalofusingdifferentorganicfarmingmethodsistogrowgoodfoodwhileavoidingdamagetotheenvironmentortopeopleshealth.Somepeoplewouldprefertostoptheuseofman-madechemicalsinagricultureentirely.Whatkeepsthemfromdoingsoisthefactthatchemicalfarmingservesthehighdemandforfoodaroundtheworld.Organicfarmingisnowheren
25、earabletomeetthatneed._,thereisstillalongwaytofindasuitablesolutionthatputssufficientfoodonthedinnertablewhilekeepingpeopleandtheenvironmentashealthyaspossible.For examplealsobutTherefore however,but,onthecontrary,instead,ononehandontheotherhandforexample,forinstance,infact,suchas,takeforexampleboth
26、and,notonlybutalso,inaddition,and,also,aswell,whatsmore,besides,furthermore,moreover,whatsworsewhyis because,therefore,for thisreason,thus,consequently,asaressultasfor,asanalternativediscoursemarkers contrast对比对比 illustrate解释解释add补充补充cause and effect因果因果introduce a new topicWritingTask近年来，媒体对“农业可持续发
27、展”“食品安全”等问题作了一些报道，引发了许多讨论，到底哪种农业种植方式有利于农业可持续发展并解决食品安全问题呢？如某英语报记者对你进行采访，征求对此现象的看法，请用英语写一篇议论文，表达自己的观点，并说明理由。OrganicfarmingChemicalfarming观点陈述类议论文观点陈述类议论文Para.1Para.2YouropinionSupportingpoint2Para.3Supportingpoint3Supportingpoint1IntroductionBodyConclusionSummaryTitleDetailsDetailsDetailsexpress your
28、opinions:Inmyopinion,.AsfarasImconcerned,.Frommypointofview,Iminfavourof.Imagainst/opposedtoIfirmlybelievethatmake a conclusion:Inshort,.Inaword,Allinall,Inconclusion,.Tosumup,signpost wordsfunctionforexample,forinstance.举例说明however,but,nevertheless,yet.转折，对比inaddition,additionally,notonly.butalso,a
29、swell,plus,moreover,whatsmore.并列，递进asfor,intermsof,whenitcomesto.转换新话题inturn,infact,thus,then,next.逻辑顺序Finish the draft_In my eyes,organic farming is preferrable to chemicalfarming,becauseitsfavorabletosustainabledevelopmentofagriculture,beneficial toboth peoples health and the environment and provi
30、de morenutritiousfood._,chemicalfarming_.Chemicalpesticideskillbothharmfulandhelpfulones,damagingthe food chain,ecological balance and thus the environment._,theytendtobehardtogetridofandaccumulateinthesoilandgroundwater,whichpoisonandpollutethesoil,water,organismandmicroorganism.To start withMake y
31、our waste no longer wasteharms the environmentWhats more_,organic farming benefits the sustainabledevelopmentofagriculture,peopleshealthandtheenvironmentby using natural means.For example,organic farmers use_asfertilizers,andadoptotherwaystokeepthe soil rich,which can provide good-quality food as we
32、ll asprotect the ecological balance.In addition,its higher price canbringabout_offamers.Inconclusion,_thatorganicfarmingisfavorable.Thoughthepriceoforganicfoodishigherbecauseofitshigher cost and greater required effort,it can bring us greatrewardsintheend.By comparisonIm fully convincednatural anima
33、l wasteshigher income_,thepollutedwater,plantsandanimals_aswell.Thoughitmaybetruethatthefoodweeatdoesnthaveenoughpesticideinittokillusimmediately,overtheyears,thispesticidemay_.Inaddition,theuseofchemicalfertilizersmakethefoodlookbright._,thefoodtastes_.Besides,itisless_inminerals.Whats worsedamage peoples healthlead to health problems and even cause cancerHowevernutritiousless delicious than that grown with chemicals