Unit2WorkingthelandUsingLanguageTeachinggoals教学目标1.Targetlanguage知识目标a.重点词汇chemical,bacteria,pest,leadto,discovery,nutrition,keep⋯freefrom,rootb.重点句型Withthesediscoveries,somefarmerandmanycustomersarebeginningtoturntoorganicfarming.Overthepasthalfcentury,usingchemicalfertilizershasbecomeverycommoninfarming.2.Abilitygoals能力目标EnableSstomasterthemainideaofthetextandknowthewaysoforganizingarticles.Teachingimportantanddifficultpoints教学重难点1.Howtograspthemainideaofthepassage.2.Howtograspthewordsandphrasesandbeabletousethemfreely.Teachingmethods教学方法Showquestions,readfast,findthemainideas,andthenreadcarefullyandfinishallthetasks.Teachingaids教学准备Arecorderandaprojector.Teachingprocedures&ways教学过程与方法StepⅠGreetingandrevisionStepⅡReadingTherearethreetasksinthisstep.First,teachercanaskstudentstoreadthearticlesoneparagraphbyoneparagraph.Askthemsomequestionsaboutthesepassages.Therearethreeparagraphsinthearticle.Ineachpassage,thereareoneortwoquestions.Whenstudentsfinishthesequestions,theywillfindthatthestructureofthetexthasturnedup.T:Inthelastperiodswetalkedaboutagriculture.Aspeople’slivingconditionimproves,moreandmorepeopleareconcernedaboutwhattheyeat.Infactmoreandmorepeoplebecomeworriedaboutthequalityofthefoodtheyeat.Becausemoreandmorefarmersusechemicalfertilizerinsteadofnaturalwastefromanimalsandtheyusepoisontokillinsectstoprotecttheirplants.Sopeoplenowallwanttoeatgreenfoodwhichdoesnoharmtotheirhealth.Theyaremoreconcernedaboutorganicfarming.Nowlet’sreadthetextandknowsomethingaboutorganicfarming.Task:Questionsaboutthetext.Showthequestionsonthescreen:1.Whatistheorganicfarming?2.Whatistheadvantageofusingnaturalfertilizer?3.Whatisthedisadvantageofusingchemicalfertilizers?4.What’sthemainideaofparagraph3?5.Whydofarmersgrowtheircropsinsuchways?T:Boysandgirls,todaywe’llreadthetextoneparagraphbyoneparagraph.Nowpleasereadthefirstparagraphquickly,andfindtheanswertothefirstquestion:whatistheorganicfarming?S1:Organicfarmingreferstocropsgrowingwithnaturalratherthanchemicalfertilizers.T:Good.Nowreadthesecondparagraphquicklyandfindtheanswertothisquestion:whataretheadvantageofusingnaturalfertilizer?S2:Makethesoilricherinmineralsandsomorefertile.T:anythingelse?S3:Reducediseasesincropsandhelpthemgrowstrongandhealthy.Besides,keeptheair,soilandwateraswellasthefoodsupplyfreefromchemical.T:Whatisthedisadvantageofusingchemicalfertilizers?S4:Letmeanswerit.Therearethreedisadvantages.Firstly,leavingchemicalsinthegroundforalongtimeisnotgoodforthesoilorthewatersupply.Secondly,farmersoftengrowthesamecropyearafteryear.Asaresult,thesoilgetsexhausted.Thirdly,chemicalfertilizerskillbothhelpfulandharmfulbacteriaandpests.MainideaofthepassageChemicalfertilizerscancausemanyproblems,soorganicfarmingisbecomingmorepopular.StructureofthetextI.usingchemicalfertilizersforalongtimecanhurtthelandandalsopeople’shealthII.Problemcausedbychemicalfertilizers1.Damagethelandbykillingthehelpfulbacteriaandpestsaswellastheharmfulones.2.Leadtocancerorotherillness.3.Foodgrownwithchemicalfertilizerslookbeautiful,butinsidethereisusuallymorewaterthanvitaminsandminerals.Ⅲ.Organicfarmingisbecomingmorepopularwithsomefarmersandmanycustomersafterthesediscoveriescameout.IV.Othermethodstokeepthesoilfertile.对爸爸的印象，从记事的时候，就有了，他留给我的印象就是沉默少言的，但是脸上却始终有微笑，不管家里遇...
