Unit5WorkingtheLandUsinglanguageReadingforwriting課件高中英語人教版選擇性

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

Whatisthesubstanceweputonthesoiltomakecropsgrow?Pre-readingWhatkindoffertilizersdofarmersuse?chemicalfertilizersnaturalfertilizersChemicalfarming

farmingusingchemicalpesticidesandartificialfertilisers.Organicfarming

simplyfarmingwithoutusinganychemicals.ReadingforWritingChemicalVersusOrganicFarming（表示兩隊(duì)）對(duì);與…相對(duì)/比較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◎本單元語塊、語法運(yùn)用1．完成句子(1)就現(xiàn)代農(nóng)業(yè)的發(fā)展而言，化學(xué)農(nóng)業(yè)和有機(jī)農(nóng)業(yè)是兩個(gè)關(guān)鍵詞。Intermsofthedevelopmentofmodernagriculture,chemicalagricultureandorganicagriculturearetwokeywords.(2)關(guān)于化學(xué)農(nóng)業(yè)和有機(jī)農(nóng)業(yè)有各種觀點(diǎn)。Therearevariousopinionsaboutchemicalagricultureandorganicagriculture.2．句式升級(jí)將句(1)(2)合并為含有定語從句的句子Intermsofthedevelopmentofmodernagriculture,chemicalagricultureandorganicagriculturearetwokeywords,aboutwhichtherearevariousopinions.(3)毫無疑問，殘留在作物內(nèi)部的化學(xué)物質(zhì)會(huì)導(dǎo)致癌癥或其他疾病。Thereisnodoubt

thatthechemicalsstayinginsidethecropscanleadtocancerorotherillnesses.(4)此外，這些蔬菜長得很快，幾乎沒有營養(yǎng)。Besides,thevegetablesgrowsofastthattheycontainlittlenutrition.(5)第二，有機(jī)農(nóng)產(chǎn)品簡單地使用天然肥料，使蔬菜和水果既美味又有營養(yǎng)。Second,organicproducesimplyusesnaturalfertilizers,andmakesvegetablesandfruittastyandnutritious.2．句式升級(jí)將句(5)升級(jí)為含有現(xiàn)在分詞短語的句子Second,organicproducesimplyusesnaturalfertilizers,makingvegetablesandfruittastyandnutritious.【引人入勝的開頭句】Peopletakedifferentviewsonthisquestion.人們對(duì)這個(gè)問題的看法各不相同。Inmyopinion,itiswrongto…

在我看來……是錯(cuò)誤的。Idon’tthinkitisaverygoodwayto…我認(rèn)為這不是一個(gè)很好的方法。I’mwritingtopersuadeyoutoquit/giveup…我寫信是勸你放棄……◎話題佳句【精彩紛呈的篇中句】Herearemyreasons.Firstofall,Ithinkitwouldbebetterif…我的理由如下。首先，我認(rèn)為如果……會(huì)更好。Thereasonfor…isthat………的原因是……However,someofthemholdadifferentview/holdtheoppositeopinion.然而，有些人持相反的觀點(diǎn)。IfIwereyou,Iwould…如果我是你，我會(huì)……Noonecanignorethefactthat…沒有人能忽視……◎話題佳句【回味無窮的結(jié)尾句】Inshort…/Inconclusion…總之……Allthingsconsidered…從各方面看來……AsfarasI’mconcerned，…我認(rèn)為……Fromwhathasbeendiscussedabove…通過以上討論……◎話題佳句【寫作指導(dǎo)】主題支持有機(jī)農(nóng)業(yè)體裁議論文人稱第一、三人稱為主時(shí)態(tài)一般現(xiàn)在時(shí)布局第一段：介紹農(nóng)業(yè)概況；第二段：分層次介紹化學(xué)農(nóng)業(yè)和有機(jī)農(nóng)業(yè)的區(qū)別；第三段：總結(jié)觀點(diǎn)，提出建議

shareyourworks!【答案】Onepossibleversion：Intermsofthedevelopmentofmodernagriculture,chemicalagricultureandorganicagriculturearetwokeywords,aboutwhichtherearevariousopinions.Chemicalagriculturehasmanydisadvantages.Thereisnodoubtthatthechemicalsstayinginsidethecropscanleadtocancerorotherillnesses.Besides,thevegetablesgrowsofastthattheycontainlittlenutrition.Organicfoodsarebecomingincreasinglypopularwithcustomers.Thefirstreasonisthatpeopleattachgreatimportancetohealth.Second,organicproducesimplyusesnaturalfertilizers,makingvegetablesandfruittastyandnutritious.Soitiswisertochooseorganicfood.Ⅲ.課文縮寫——概要寫作下面是根據(jù)課文內(nèi)容寫的一篇60詞左右的內(nèi)容概要，請(qǐng)根據(jù)括號(hào)內(nèi)的漢語提示完成短文。Sincethemiddleofthe20thcentury，farmers_______________

(一直在使用化學(xué)殺蟲劑以及化學(xué)肥料)infarming.Butinthelongterm，thechemicals______________