Unit5WorkingtheLandUsinglanguageReadingforwriting课件高中英语人教版选择性

UsinglanguageReadingforwriting1.Weareabletoknowthemeaningsofchemicalfarmingandorganicfarming.2.Weareabletoknowtheadvantagesanddisadvantagesofbothchemicalfarmingandorganicfarming.3.Weareabletomastersometransitionalwordsorphrasesinthetext.4.Wearerequiredtoexpressouropinionsonchemicalfarmingandorganicfarming,andwriteanargumentativeessay.LearningobjectivesItisfertilizer.

Whatisthesubstanceweputonthesoiltomakecropsgrow?Pre-readingWhatkindoffertilizersdofarmersuse?chemicalfertilizersnaturalfertilizersChemicalfarming

farmingusingchemicalpesticidesandartificialfertilisers.Organicfarming

simplyfarmingwithoutusinganychemicals.ReadingforWritingChemicalVersusOrganicFarming（表示两队）对;与…相对/比较ReadthetextonPage55,matchthmainideas(A-D)withtheparagrphs.Thencompletethesentencesinthetable.A.WhatorganicfarmingisB.Whyman-madechemicalsarestillusedinfarmingC.OrganicmehtodsforproducingrichsoilD.TheproblemswithchemicalfarmingParagraph1&2Paragraph3Paragraph4Paragraph5paragraphmainideadetail1-2D·Pesticidescankillhelpful___________________·Somepesticideshavebeen____________becauseofthe________________________________·Cropsgrownwithchemicalfertilisersusually_______________tobefullof____________3A·Manyorganicfarmersuse_________________________asfertiliser.bacteriaandinsectsnutritionnaturalwastefromanimalsprohibitedthedemagetheycausetopeopleandenvironmentgrowtoofast4C·Theyoften_______________________grownineachfield_____________·Theyalsoplantcropsthatuse______________ofthesoiltohelpkeepitrich.5B·Organicfarmingisnownowherenearabletomeethigh___________changethekindofcroptoproducerichsoildiversedepthdemandforfoodDTheproblemswithchemical

farming

Para1-2AWhatorganic

farmingisPara3COrganicmethodsforproducingrichsoilPara4BWhyman-madechemicalarestillusedinfarmingPara5ChemicalfarmingOrganicfarmingThinkingReadforstucturePara1:howeverPara2:forexample,inaddition,inturn,infact,asfor,but,and,aswellReadfortransitionalwords&phrasesPara3:asanalternative,forexample,alsoPara4:also,forinstance,forexample,butPara5:thereforeargumentativewritingChemicalfarming

Para1-21.Whydidmanyfarmerswelcometheintroductionofchemicalfarming?(Para1)

Advantages:Manyfarmerswelcomedthemasagreatwaytofightcropdiseaseandincreaseproduction.2.Whatconcernsmanypeopleabouttheuseofpesticides?(Para1)

Disadvantages:Theirlong-termusecansometimesharmboththelandandpeople’shealth.3.Whatisoneproblemwiththeuseofchemicalfertilisers?(Para2)

Disadvantages:Cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.OrganicfarmingPara3-44.Howisorganicfarmingdifferentfromchemicalfarming?(Para3)

Organicfarmingissimplyfarmingwithoutusinganychemicals.Organicfarmersfocusonkeepingtheirsoilrichandfreeofdiseasethroughnaturalmeans.5.Whataretheorganicmethodsmentionedinthetext?(Para3&4)

1.usenaturalwastefromanimalsasfertilizer.2.changethekindofcropgrownineachfieldeveryyear.3.plantdiversecropsthatusedifferentdepthofsoiltokeepitrich.6.What'sthegoalofusingorganicfarmingmethods?（Para4）

Advantages:Thegoalofusingdifferentorganicfarmingmethodsistogrowgoodfoodwhileavoidingdamagetotheenvironmentortopeople'shealth.chemicalfarmingThinkingorganicfarmingadvantagesdisadvantagesfightcropdiseaseincreaseproductionlowercostcropslookbeautifuloutsidegoodfoodavoidingdamagetotheenvironmentortopeople'shealthharmthelandharmpeople’shealthharmtheenvironmentcropsarelessinnutritioncannotmeetthedemandforfoodmoreeffortsandhighercostsmellygasesWritingchemicalfarmingVSorganicfarming◎本单元语块、语法运用1．完成句子(1)就现代农业的发展而言，化学农业和有机农业是两个关键词。Intermsofthedevelopmentofmodernagriculture,chemicalagricultureandorganicagriculturearetwokeywords.(2)关于化学农业和有机农业有各种观点。Therearevariousopinionsaboutchemicalagricultureandorganicagriculture.2．句式升级将句(1)(2)合并为含有定语从句的句子Intermsofthedevelopmentofmodernagriculture,chemicalagricultureandorganicagriculturearetwokeywords,aboutwhichtherearevariousopinions.(3)毫无疑问，残留在作物内部的化学物质会导致癌症或其他疾病。Thereisnodoubt

thatthechemicalsstayinginsidethecropscanleadtocancerorotherillnesses.(4)此外，这些蔬菜长得很快，几乎没有营养。Besides,thevegetablesgrowsofastthattheycontainlittlenutrition.(5)第二，有机农产品简单地使用天然肥料，使蔬菜和水果既美味又有营养。Second,organicproducesimplyusesnaturalfertilizers,andmakesvegetablesandfruittastyandnutritious.2．句式升级将句(5)升级为含有现在分词短语的句子Second,organicproducesimplyusesnaturalfertilizers,makingvegetablesandfruittastyandnutritious.【引人入胜的开头句】Peopletakedifferentviewsonthisquestion.人们对这个问题的看法各不相同。Inmyopinion,itiswrongto…

在我看来……是错误的。Idon’tthinkitisaverygoodwayto…我认为这不是一个很好的方法。I’mwritingtopersuadeyoutoquit/giveup…我写信是劝你放弃……◎话题佳句【精彩纷呈的篇中句】Herearemyreasons.Firstofall,Ithinkitwouldbebetterif…我的理由如下。首先，我认为如果……会更好。Thereasonfor…isthat………的原因是……However,someofthemholdadifferentview/holdtheoppositeopinion.然而，有些人持相反的观点。IfIwereyou,Iwould…如果我是你，我会……Noonecanignorethefactthat…没有人能忽视……◎话题佳句【回味无穷的结尾句】Inshort…/Inconclusion…总之……Allthingsconsidered…从各方面看来……AsfarasI’mconcerned，…我认为……Fromwhathasbeendiscussedabove…通过以上讨论……◎话题佳句【写作指导】主题支持有机农业体裁议论文人称第一、三人称为主时态一般现在时布局第一段：介绍农业概况；第二段：分层次介绍化学农业和有机农业的区别；第三段：总结观点，提出建议

shareyourworks!【答案】Onepossibleversion：Intermsofthedevelopmentofmodernagriculture,chemicalagricultureandorganicagriculturearetwokeywords,aboutwhichtherearevariousopinions.Chemicalagriculturehasmanydisadvantages.Thereisnodoubtthatthechemicalsstayinginsidethecropscanleadtocancerorotherillnesses.Besides,thevegetablesgrowsofastthattheycontainlittlenutrition.Organicfoodsarebecomingincreasinglypopularwithcustomers.Thefirstreasonisthatpeopleattachgreatimportancetohealth.Second,organicproducesimplyusesnaturalfertilizers,makingvegetablesandfruittastyandnutritious.Soitiswisertochooseorganicfood.Ⅲ.课文缩写——概要写作下面是根据课文内容写的一篇60词左右的内容概要，请根据括号内的汉语提示完成短文。Sincethemiddleofthe20thcentury，farmers_______________

(一直在使用化学杀虫剂以及化学肥料)infarming.Butinthelongterm，thechemicals______________