unit2 Chemical or Organic Farming

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1、ChemicalOrOrganicFarming?ReadingMadebyDuYiWordspreviewchemicalorganicfertilefertilizefertilizermineralnutritionadj.化学的;关于化学的adj.有机的；器官的adj.肥沃的，富饶的n.营养;滋养;食物n.矿物;矿石n.肥料；化肥vt.施肥Expressionspreviewbuildupleadtofocusonkeep…freefrom/of使…免受(影响,伤害等)；使…不含(有害物)逐渐增强;建立;开发导致;造成(后果)集中(注意力,精力等)于Ifyou

2、werealandowner,youwanttogrowsomekindsofcrops,howwillyoudo?First,buyorselecttheseedsfromthestore.Second,weneedtoplow（犁田）orturnoverthesoil.Third,wesow（播种）theseedsinthesoil.Finally,wecanharvestourgrain/sorghum/peanuts.fertilizethesoiltoimprovetheoutputofthecropsfertilizerHowmanykindsofferti

3、lizersdofarmersuse?Andwhatarethey?ChemicalfertilizersnaturalwastefromanimalsWhichkinddofarmersusewhentheyaredoingorganicfarming?Thesecondone---naturalwastefromanimals________fertilizerscancausemany________,soorganicfarmingisbecomingmore________.ChemicalproblemspopularTogetthemainideaofth

4、ispassage.Listeningtask:Task1Skimming（3mins）Findoutthemainideaofthesefourparagraphs.Long-termuseofchemicalfertilizerscancausedamagetothelandandpeople’shealth.Problemscausedbychemicalfertilizers.P1.P2.Farmersandcustomersturntoorganicfarming.Othermethodstokeepthesoilfertile.P3.P4.Para1:1.W

5、hyarechemicalfertilizerssopopularinfarmingtoday?2.Doyouthinkitisreallyagreatway?Theyareagreatwaytostopcropdiseaseandincreaseproduction.NoTask2ScanningWhatproblemscanbecausedbyusingchemicalfertilizers?(disadvantage)Firstly,theydamagethelandbykillingthehelpfulbacteriaandpests.Thirdly,fruit

6、,vegetablesandotherfoodgrownwithchemicalfertilizersusuallygrowtoofasttobefullofmuchnutrition.Para2:Secondly,Chemicals’stayinginthegroundandundergroundwaterforalongtimeaffectscropsand,therefore,animalsandhumans.Andmanyofthechemicalscanleadtocancerorotherillnesses.1.Whatisorganicfarming?2.

7、Whatistheadvantagesofusingnaturalfertilizer?Para3:1.Whatisorganicfarming?Organicfarmingissimplyfarmingwithoutusingany________.greenfoodchemicals2.Whatistheadvantagesofusingnaturalfertilizer?*Reducediseasesincropsandhelpthemgrowstrongandhealthy.*Makethesoilricherinminerals