Unit5WorkingtheLandReadingforWriting課件-高二英語(yǔ)人教版選擇性

Unit5UsingLanguageReadingforwriting（P55）

ChemicalfarmingVSOrganicfarming化學(xué)耕作與有機(jī)耕作Organicfarmingisnotpesticide,fertilizer,andothersyntheticgrowthagentsofproduction,butusemanureforfertilizerandotherorganicfertilizers.Leadinspraypesticides

useartificialfertilisersuseorganicfertilizersWhichoneisorganicfarming?××√Warmingup

Howmuchdoyouknowaboutchemicalfarmingandorganicfarming?pesticides殺蟲(chóng)劑physicalinsecticides物理殺蟲(chóng)Warmingup

Howmuchdoyouknowaboutchemicalfarmingandorganicfarming?chemicalfertilisersorganicfertilisers/animals’wastePrediction1.Whatisthetextabout?ChemicalfarmingOrganicfarming(definition,benefit,problem...)picturestitleReadthepassage,andthenanswerthequestionsonpage56.

Whatischemicalfarming?

Whatisorganicfarming?Organicfarmingissimplyfarming________________Chemicalfarmingisfarmingwith_________,especially___________________and_________________.chemicalschemicalpesticidesartificialfertilizerswithoutchemicals.Para.1

Para.3

Readpara.1andpara.3,andthenanswerthefollowingquestions.Readingwhile添加標(biāo)題1.Readthepassageandanswerthequestionsonpage56.2.Readthepassageagainandcompletethechartonpage56.Reading1.Whydidmanyfarmerswelcometheintroductionofchemicalfarming?2.Whatconcernsmanypeopleabouttheuseofpesticides?3.Whatisoneproblemwiththeuseofchemicalfertilisers?4.Howisorganicfarmingdifferentfromchemicalfarming?5.Whydoorganicfarmerschangethekindofcropgrowninafieldeveryyear?6.Whatisthegoalofusingorganicfarmingmethods?ReadingChoosethemainideas(A-D)belowwiththeparagraphs.

AWhatorganicfarmingisBWhyman-madechemicalsarestillusedinfarmingCOrganicmethodsforproducingrichsoilDTheproblemswithchemicalfarmingReadingDTheproblemswithchemicalfarmingAWhatorganicfarmingisCOrganicmethodsforproducingrichsoilBWhyman-madechemicalsarestillusedinfarmingTexttype:Argumentation

partmainideaDetail1-2Pesticidecankillhelpful

.somepesticideshavebeen

,becauseofthe

.Cropsgrownwithchemicalfertilisersusually

tobefullof_____.3Manyorganicfarmersuse

asfertiliser.4Theyoften

grownineachfield

.Theyalsoplantcropsthatuse

ofthesoiltohelpkeepitrich.5Organicfarmingisnowherenearabletomeetthehigh

.DACBbacteriaandinsectsprohibiteddamagetheycausegrowtoofastnutritionnaturalwastefromanimalschangethekindofcropdemandforfoodaroundtheworlddifferentdepthseveryyearReadingCompletethesentencesinthetable.______________________________________(化學(xué)農(nóng)藥和人工肥料)havebeeninwidespreaduseinfarmingsincethemiddleofthe20thcentury.Whentheywerefirstintroduced,manyfarmerswelcomedthemasagreatwayto_________________________________________(抵御作物病害、增加產(chǎn)量).Overtime,however,whatsomescientistshavefoundisthat_______________________________________________________________(長(zhǎng)期使用它們有時(shí)會(huì)危害土地和人類健康).Chemicalpesticidesandartificialfertilizersdiseaseandincreaseproductiontheirlong-termusecansometimesharmboththelandandpeople’shealthPara1CHEMICALVERSUSORGANICFARMINGfightcropReadforusefulexpressions1.Whydidmanyfarmerswelcometheintroduction

ofchemicalfarming?

Manyfarmerswelcomedthemasagreatwayto

fightcropdiseases

andincreaseproduction.2.Whatconcernsmanypeopleabouttheuseof

pesticides?

Theirlong-termusecansometimesharmboth

thelandandpeople’shealth.Para.1ReadforwritingusefulexpressionsForexample,pesticidescandamagethelandby_____________________________________________________(殺死有害細(xì)菌和昆蟲(chóng)的同時(shí)，也殺死有益的細(xì)菌和昆蟲(chóng)).Inaddition,thesechemicalscanstayinthesoilandundergroundwatersourcesforalongtime.Thisaffectsthecropsgrownonthelandand,________________________________________(繼而影響消化這些作物的人畜).Manypeopleworrythatthesechemicalsmay_________________________________(致病，甚至引發(fā)癌癥).Infact,somepesticideslikeDDThavebeenprohibitedinmostcountriesbecauseofthedamagetheycausetopeopleandtheenvironment.Asforchemicalfertilizers,cropsgrownwiththemusually____________________________(生長(zhǎng)過(guò)快而營(yíng)養(yǎng)不足).Theymaylookbeautifulontheoutside,butinsidethereisusuallymorewaterthan______________(必需礦物質(zhì)),andtheyoften____________(口感較差)aswell.killingnotonlyharmfulbacteriainturn,theanimalsandhumanswhodigestthemmakethemillandevencausegrowtoofasttoberichinnutritionessentialmineralshavelessflavorPara2andinsects,butalsohelpfulonescancer3.Whatisoneproblemwiththeuseofchemical

fertilisers?

Cropsgrownwiththemusuallygrowtoofastto

berichinnutrition.Para.2Readforwritingusefulexpressions_________________(作為一種替代方法),somefarmershaveswitchedto_____________(有機(jī)耕作),andmanycustomershaveturnedto__________(有機(jī)食品)whentheyshopatthelocalgrocery.Organicfarmingissimplyfarming___________________________(不使用任何化學(xué)品).Organicfarmersfocuson_____________________________________________________(通過(guò)天然的方法保持土壤肥沃，沒(méi)有病害).Forexample,manyorganicfarmersusenaturalwastefromanimalsasfertilizer.This_____________________________________(使農(nóng)田土壤富含礦物質(zhì)).Italsokeepstheair,soil,water,andcropsfreeofchemicals.AsanalternativeorganicfarmingorganicfoodwithoutusinganykeepingtheirsoilrichandfreeofdiseasethroughnaturalmeansmakesthesoilintheirfieldsricherinmineralsPara3chemicals4.Howisorganicfarmingdifferentfromchemicalfarming?Organicfarmingissimplyfarmingwithoutusinganychemicals.

Organicfarmersfocuson

keepingtheirsoilrichandfreeofdiseases

throughnaturalmeans.Para.3Readforwriting1(usefulexpressions)Organicfarmersalsousemanyothermethodstoproducerichsoil.Theyoften_____________________________________________(每年更換每塊農(nóng)田種植的作物種類).Forinstance,theymaygrowcornorwheatinafieldoneyear,andthengrowbeanstherethenext.Whydifferentcropsaregrownisbecausetheyputimportantmineralsbackintotheground,makingitreadyforthenextbatchofcrops.Organicfarmersalso______________________________________________(種植土壤深度要求不同的多樣化作物)tohelpkeepitrich.Forexample,peanutsgrowontheground’ssurface,butmanyothervegetablesputdowndeeproots.Thegoalofusingdifferentorganicfarmingmethodsisto_______________________________________________________________(生產(chǎn)優(yōu)質(zhì)食物，同時(shí)避免損害環(huán)境和人類健康).changethekindofcropgrownineachfieldeveryyearplantdiversecropsthatusedifferentgrowgoodfoodwhileavoidingdamagetotheenvironmentortopeople’shealth.Para4depthsofsoil5.Whydoorganicfarmerschangethekindof

cropgrowninafieldeveryyear?Differentcropsaregrownbecausetheyput

importantmineralsbackintotheground,makingitreadyforthenextbatchofcrops.Para.46.

Whatisthegoalofusingorganicfarmingmethods?

Do

youthinkitcanbereached?Whyor

whynot?

Thegoalofusingdifferentorganic

farming

methodsistogrowgoodfoodwhileavoidingdamagetotheenvironmentortopeople’shealth.Para.4ReadforwritingusefulexpressionsSomepeoplewouldprefertostoptheuseofman-madechemicalsinagricultureentirely.

Whatkeepsthemfromdoingsoisthefactthatchemicalfarming____________________________________________(滿足了全世界對(duì)事物的高要求).

Organicfarmingisnowherenearabletomeetthatneed.Therefore,___________________________________________________________________________________________________________________________________________________(想要找到一個(gè)合適的解決方案，使人類和環(huán)境盡可能保持健康，又讓人們有足夠的食物可吃，還有很長(zhǎng)的路要走).servesthehighdemandforfoodaroundtheworldsuitablesolutionthatputssufficientfoodonthedinnertablewhilekeepingpeopleandtheenvironmentashealthyaspossible.Para5thereisstillalongwaytofindaWhyman-madechemicalsarestillusedinfarmingPara5

however,but,onthecontrary,instead,ononehand…ontheotherhandforexample,forinstance,infact,suchas,take…forexampleboth…and…,notonly…butalso,inaddition,and,also,aswell,what’smore,besides,furthermore,moreover,what’sworsewhy…isbecause…,therefore,forthisreason,thus,consequently,asaressultasfor,asanalternativeSummarizethetransitionalwords

contrast對(duì)比

illustrate解釋add補(bǔ)充causeandeffect因果introduceanew

topicReadfortransitionalwordsChemicalpesticidesandartificialfertilisershavebeeninwidespreaduseinfarmingsincethemiddleofthe20thcentury.Whentheywerefirstintroduced,manyfarmerswelcomedthemasagreatwaytofightcropdiseaseandincreaseproduction.Overtime,①_________,whatsomescientistshavefoundisthattheirlong-termusecansometimesharm③________theland______people’shealth.②____________,pesticidescandamagethelandbykilling③________harmfulbacteriaandinsects,___________helpfulones.③___________,thesechemicalscanstayinthesoilandundergroundwatersourcesforalongtime.Thisaffectsthecropsgrownonthelandand,inturn,theanimalsandhumanswhodigestthem.CHEMICALVERSUSORGANICFARMINGhoweverbothandForexamplenotonlybutalsoInadditionManypeopleworrythatthesechemicalsmaymakethemillandevencausecancer.②___________,somepesticideslikeDDThavebeenprohibitedinmostcountriesbecauseofthedamagetheycausetopeopleandtheenvironment.⑤_______chemicalfertilisers,cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.Theymaylookbeautifulontheoutside,①_______insidethereisusuallymorewaterthanessentialminerals,③_______theyoftenhavelessflavour_______.⑤________________,somefarmershaveswitchedtoorganicfarming,andmanycustomershaveturnedtoorganicfoodwhentheyshopatthelocalgrocery.Organicfarmingissimplyfarmingwithoutusinganychemicals.InfactAsforbutandaswellAsanalternativeOrganicfarmersfocusonkeepingtheirsoilrichandfreeofdiseasethroughnaturalmeans.②____________,manyorganicfarmersusenaturalwastefromanimalsasfertiliser.Thismakesthesoilintheirfieldsricherinminerals.It③_________keepstheair,soil,water,andcropsfreeofchemicals.Organicfarmers③_________usemanyothermethodstoproducerichsoil.Theyoftenchangethekindofcropgrownineachfieldeveryyear.②___________,theymaygrowcornorwheatinafieldoneyear,andthengrowbeanstherethenext.④___________________________________________theyputimportantmineralsbackintotheground,makingitreadyforthenextbatchofcrops.ForexamplealsoForinstancealsoWhydifferentcropsaregrownisbecauseOrganicfarmers③________plantdiversecropsthatusedifferentdepthsofsoiltohelpkeepitrich.②____________,peanutsgrowontheground’ssurface,①_________manyothervegetablesputdowndeeproots.Thegoalofusingdifferentorganicfarmingmethodsistogrowgoodfoodwhileavoidingdamagetotheenvironmentortopeople’shealth.Somepeoplewouldprefertostoptheuseofman-madechemicalsinagricultureentirely.Whatkeepsthemfromdoingsoisthefactthatchemicalfarmingservesthehighdemandforfoodaroundtheworld.Organicfarmingisnowherenearabletomeetthatneed.④___________,thereisstillalongwaytofindasuitablesolutionthatputssufficientfoodonthedinnertablewhilekeepingpeopleandtheenvironmentashealthyaspossible.ForexamplealsobutTherefore

however,but,onthecontrary,instead,ononehand…ontheotherhandforexample,forinstance,infact,suchas,take…forexampleboth…and…,notonly…butalso,inaddition,and,also,aswell,what’smore,besides,furthermore,moreover,what’sworsewhy…isbecause…,therefore,forthisreason,thus,consequently,asaressultasfor,asanalternativediscoursemarkers

contrast對(duì)比

illustrate解釋add補(bǔ)充causeandeffect因果introduceanew

topicWhat’stheauthor’sattitudetowardschemicalfarmingandorganicfarming?A.NegativeB.ambiguousC.objectiveD.supportive

WritingWhat’syouropiniononchemicalororganicfarming?Let’swriteanargumentativepassageaboutit.EndingBeginning

BodyAnargumentativeessayTopicsentence:Inmyopinion,________farmingispreferableto_______farmingbecause____________.Argument1(Topicsentence)+detail:

Point1:Tobeginwith,______________.(Detail)_______.Point2:What’smore,_______________.(Detail)_______.Point3:Finally,_______________.(Detail)_______.Conclusion:Inclosing,Iamfullyconvincedthat__________________.StructureWhat’syourargument?Inmyopinion/inmyview/inmyeyes/asfarasIamconcerned,organicfarmingispreferabletochemicalfarming,becauseit’sbeneficialtobothpeople’shealthandtheenvironment,andfavorable

to

sustainable

development

of

agriculture.Inmyopinion,Iagree/amfor/beinfavorofchemicalfarming,becauseitcanfightcropdeceaseandincreaseproduction,thusservingthehighdemandforthefoodaroundtheworld.BeginningFarmingadvantagedisadvantagechemicalfarmingorganicfarming

Listtheadvantagesanddisadvantagesofeachfarmingandthinkaboutotheraspectsthattheauthordidn’tlist.

fightcropdiseaseeffectivelyincreaseproductionkeepthesoilrichkeeptheenvironment

andcropsfreeofchemicalsproducecropswithmuchnutritionandflavorharmtheland,environmentandpeople’shealthproducecropswithlessnutritionandflavorcannotmeetthedemandforfoodmoreeffortsandhighercostlowercostcropslookbeautifuloutsidesmellygasesBrainstormthedetailsInshort…/Inconclusion…總之……Allthingsconsidered…從各方面看來(lái)……AsfarasI’mconcerned，…