Unit 5 Reading for Writing 课件【高效课堂+备课精研】 高中英语人教版（2019）选择性必修第一册

Unit5WorkingtheLandEvaluatechemicalfarmingandorganicfarmingReadingforWritingTounderstandthedifferencesbetweenchemicalandorganicfarmingandtheiradvantagesanddisadvantages;Tolearnaboutthestructureofargumentativeessay;Towriteanessaytoexpressyourviewsonchemicalfarmingororganicfarming.LearningObjectiveStep1

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inWhatmakesplantsgrowbetter?ChemicalfertilizersNaturalwastefromanimalsdocerID:4610637Toprotectthecrops,farmershavetokillofftheharmfulpests.Farmerswillusepesticidestokillpestsorinsects.ChemicalFarmingStep1

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inOrganicFarmingOrganicfarmingissimplyfarmingwithoutusinganychemicals.Step1

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inWhichtomatoesdoyouprefer?5yuan/kg30yuan/kgNormaltomatoesOrganictomatoesStep1

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inChemicalFarmingVersusOrganicFarmingStep2

ReadingReadforstuctureSkimthepassageandmatchthemainideas(A-D)withtheparagraphs.AWhatorganicfarmingisBWhyman-madechemicalarestillusedinfarmingCOrganicmethodsforproducingrichsoilDTheproblemswithchemicalfarmingPara1-2Para3Para4Para51.Whydidmanyfarmerswelcometheintroductionofchemicalfarming?2.Whatconcernsmanypeopleabouttheuseofpesticides?3.Whatisoneproblemwiththeuseofchemicalfertilisers?4.Howisorganicfarmingdifferentfromchemicalfarming?5.Whydoorganicfarmerschangethekindofcropgrowninafieldeveryyear??6.What'sthegoalofusingorganicfarmingmethods?Doyouthinkitcanbereached?Whyorwhynot?Readforinformation1.Whydidmanyfarmerswelcometheintroductionofchemicalfarming?

Manyfarmerswelcomedthemasagreatwaytofightcropdiseaseandincreaseproduction.Advantage:2.Whatconcernsmanypeopleabouttheuseofpesticides?

Theirlong-termusecansometimesharmboththelandandpeople’shealth.Disadvantages:3.Whatisoneproblemwiththeuseofchemicalfertilisers?

Cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.Disadvantage:4.Howisorganicfarmingdifferentfromchemicalfarming?

Organicfarmingissimplyfarmingwithoutusinganychemicals.Organicfarmersfocusonkeepingtheirsoilrichandfreeofdiseasethroughnaturalmeans.5.Whydoorganicfarmerschangethekindofcropgrowninafieldeveryyear?Differentcropsaregrownbecausetheyputimportantmineralsbackintotheground,makingitreadyfornextbatchofcrops.6.What'sthegoalofusingorganicfarmingmethods?Doyouthinkitcanbereached?（Para4）

Thegoalofusingdifferentorganicfarmingmethodsistogrowgoodfoodwhileavoidingdamagetotheenvironmentortopeople'shealth.Advantage:FarmingBenefit

ProblemSolutionChemicalfarming

OrganicfarmingTheauthoruses“Benefits—Problems—Solutions”tointroducechemicalfarmingandorganicfarming.Finishthetableaccordingtothepassage.fightcropdiseaseandincreaseproductionsometimesharmboththelandandpeople’shealthswitchtoorganicfarmingmakethesoilrich;keeptheair,soil,waterandcropsfreeofchemicalscannotmeettheneedstillalongwaytofindasuitablesolutionStep3

WritingWriteanargumentativeessaygivingyouropiniononchemicalororganicfarming.发表议论就是通过议论或说理来表达作者的见解和主张，作者对某一问题持有一种看法，为了使读者同意自己的看法，提出若干理由，试图说服别人。发表议论时，我们要注意三个要素：论点、论据、论证。该类文章一般分为三部分：第一部分：开门见山，说明