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人教版Book4(Reading,Speaking&Writing)UsinglanguageVSStep1Lead-inbigandbeautifulfresher,healthier,tastebettertoimprovetheoutputofthecropsfertilizerherbicidepesticidenaturalfertilizerfromanimalwastechemicalfertilizerHowmanykindsoffertilizersdofarmersuse?Whichkinddofarmersusewhentheyaredoingorganicfarming?ChemicalfertilizersgreenfoodorganicfoodChemicalorOrganicFarming?D.Long-termuseofchemicalfertilizerscancausedamagetothelandandpeople’shealth.B.Farmersandcustomersturntoorganicfarming.C.Othermethodstokeepthesoilfertile.Step2Reading4mA.Problemscausedbychemicalfertilizers.Task1Skimthepassageandmatchthemainideawitheachparagraph.P1.P2.P3.P4.Themainideaofthispassage:________________cancause_____________,so________________isbecomingmorepopular.chemicalfertilizersmanyproblemsorganicfarming1.Whyarechemicalfertilizerssopopularinfarmingtoday?2.Whatproblemscanbecausedbyusingchemicalfertilizers?3.Whatisorganicfarming?Andwhataretheadvantagesoforganicfarming?4.Whatmethodsdotheorganicfarmersusetokeepthesoilfertile?Task2Readthepassagecarefullyandanswerthefollowingquestions1.Whyarechemicalfertilizerssopopularinfarmingtoday?Manyfarmerswelcomedthemasagreatwaytostopcropdiseaseandincreaseproduction.Paragraph1Chemicalfertilizerdamagethelandorthewatersupplydamagepeople’shealthGrowtoofasttobefullofnutrition2.Whatproblemscanbecausedbyusingchemicalfertilizers?Whatproblemscanbecausedbyusingchemicalfertilizers?Therearethreeproblems.First,theycandamage…aswellas….Theyalsostayinthe…and….Inaddition,…growtoofastto….first;second;finally;lastbutnotleast,etc.Para2Therearethreeproblems.First,theycandamage…aswellas….Theyalsostayinthe…and….Inaddition,…growtoofastto….Tips:connectives（过渡词）andtransitionalphrases（过渡词）fordevelopmentParagraph2advantages3.Whatisorganicfarming?Whataretheadvantagesoforganicfarming?MakethesoilricherinmineralsandmorefertileHelpcropsgrowstrongandhealthykeeptheair,soil,waterandcropsfreefromchemicals.(Environment-friendly)Paragraph3Farmingwithoutusinganychemicals.•Itisobviousthat•Anadvantageoforganicfarmingisthat•Whatisevenmoreimportantisthat•Thatisthereasonwhymanyfarmerhaveturnedtoorganicfarming.organicfarmingmeansgrowingcropswithoutusinganychemicals.thefarmersfocusonkeepingtheirsoilrichandfreeofdisease.itcankeeptheair,soil,waterandcropsfreefromchemicals.Themethodstokeepthesoilfertile1.usingnaturalwastefromanimalsasfertilizer.2.changingthekindofcropineachfield.3.plantingcropstousedifferentlevelsofsoil.4.plantinggrassbetweencropstoprevent…Thesamegoal:____________________________________________________________________________________________togrowgoodfoodandtoavoiddamagingtheenvironmentorpeople’shealth.Paragraph3and4para1:Anewdiscoveryofscientists.para2:Severalproblemscausedbyusingchemicalfertilizers.para3:Theadvantagesofusingorganicfarming.para4:Somemethodstokeepthesoilfertile.ThestructureofthispassagePara1TopicPara2ProblemsPara3AdvantagesPara4Severalmethodsillustration（阐明）comparisonconclusionThetypeofthearticleis_____________exposition（说明文）Overthepasthalfcentury,…havebecomeverycommon….…welcomedthemasa…wayto….Recently,however,wehavebeenfindingthattheycancausedamageto…,even…,topeople’shealth.Whataresomeoftheproblemscausedby…?First,…Second,…Lastbutnotleast,…Withthesediscoveries,…arebeginningtoturnto….….Thefollowingwordsmayhelpyou.Problems：1.causewhitepollution2.easytobebroken3.difficulttobreakdown4.doharmtotheenvironmentandpeople'shealthAdvantages：1.canberecycledandreused2.saveresources3.cheap4.protecttheenvironmentOverthepasthalfcentury,plasticbagshavebecomeverycommoninourdailylife.Wewelcomedthemasaconvenientwaytocarrygoods.Recently,however,wehavebeenfindingthattheycancausedamagetotheenvironment,evenworse,topeople’shealth.Whataresomeoftheproblemscausedbyplasticbags?First,peopleoftenleaveplasticbagshereandthere,makingwhitepollution.Second,ittakesalongtime,morethan100years,tobeexact,tobreakup.Lastbutnotleast,whenheated,plasticbagscanproducesomethingharmful,whichcanbuildupinourbodyandeventuallyleadtocancerorotherillnesses.Withthesediscoveries,wearebeginningtoturntoclothbags.Theycanbeusedmanytimes.Peoplecansavealotofsourceinthisway.Itisalsoagoodideatomakesomebyourselves,whichisinteresting.Let’suseclothbagsinourdailylifeinsteadofplasticbags,notonlyfortheenvironmentprotection,butalsothesakeofourhealth.Step3SupplementaryreadingPassageAWhatismainlydiscussedinthispassage?WhyorganicfoodcostmoreLoweryieldsRisinglaborcostsHighdemandReasonsWhyConsumersShouldBuyOrganicFoodPassageBhealthyandsafebuildsstrongfuturegenerationskeepsourwatercleanresultsinlesssoilerosionoffersoutstandingflavorbecomingmoreaffordablereasonsContinuallypurchaseorganicfoodYourpurchasesnowmakeadifferenceinthelongrun.Step4MakingaDialogue(Pairwork)Situation:Youareafarmerandyourpartneristhecustomer,whodoesn’tknowmuchabouttheorganicfood.Youarepersuadingthecustomertobuyyourorganicfoodthatishealthyandsafebutmoreexpensive.MakingaDialogue(Pairwork)FarmerCustomerIt’sbetterto…Thisisgoodvaluebecause…Theadvantagesare…It’smoreexpensivebut…You’lltastethedifferencewhen…It’sagreatpitythat…I’