Unit-2-Working-the-land----using-language.ppt

ChemicalOrOrganicFarming?,fertilizer,Whatdofarmersputintothesoiltomakecropsgrowwell?,naturalfertilizer(animalwaste),chemicalfertilizer,Fastreading,Part2,Part1,Para1.,Para2.,Para3.,Para4.,Long-termuseof_fertilizerscancausedamageto_.,Skimthetext,trytogetthemainideaofeachparagraph,Task1,Farmersandcustomersturnto_.,_causedbychemicalfertilizers.,Othermethodstokeep_,chemical,thelandandpeopleshealth,Problems,organicfarming,thesoilfertile.,Chemicalfarming,damage_,affect_,_and_.,leadto_and_.,fruit,vegetablesandotherfoodhaveless_.,bykilling_,bystayinginthegroundandundergroundwater,bybuildingup_,bygrowingtoofast,theland,cropsanimalshumans,cancerotherillness,nutrition,thehelpfulbacteriaandpestsaswellasharmfulones.,inpeoplesbodiesovertime,ReadPart2,trytofindthemethodsandadvantagesoforganicfarming,thenfilltheblanks.,Tasktwo,Organicfarming,usenaturalwaste_,makethesoil_,change_,put_backinto_,making_,plantdifferent_withdifferentlengthsof_,Usedifferentlevelsofsoil,plant_andthenleaveit_,preventwindorwaterfromcarryingawaythesoilandbecomeanaturalfertilizer,Advantages,richerinmineralsandsomorefertile,fromanimalsasfertilizer,thekindofcropineachfieldeveryfewyears,importantmineralsthesoilitreadyforothercrops,cropsroots,grassbetweencropsintheground,Readthetextagain,thenchoosethebestanswerforthefollowingquestions.,Taskthree,1.WhichisNOTthereasonwhyorganicfarmersprefernaturalwastefromanimals?A.Itcankeepthefoodfreefromchemicals.B.Itcankeeptheair,soilandwaterfreefromchemicals.C.Itcankillharmfulpests.D.Itcanmakethesoilricherinmineral.,2.Whatistheadvantageofusingchemicalfertilizers?A.Leavingchemicalsinthegroundforalongtimeisgoodforwatersupply.B.Theycangetthesoilexhausted.C.Theycankillhelpfulbacteria.D.Theycankillharmfulpest.,3.Theorganicfarmersdothefollowingsexcept_.A.addingfertilizerswhichisrichinmineralB.changingcropseverytwoorthreeyearsC.plantingseedsindifferentlayersofthesoilD.plantinggrassbetweencropstopreventthesoilfrombeingblownaway,Postreading,para1:Anewdiscoveryofscientists.para2:Severalproblemscausedbyusingchemicalfertilizers.para3:Theadvantagesofusingorganicfarming.para4:Somemethodstokeepthesoilfertile.,Thestructureofthispassage,Para1Topic,Para2Problems,Para3Advantages,Para4Severalmethods,illustration（阐明）comparisonkmprsnconclusion,Thetypeofthearticleis_,expositionkspzn（说明文）,Writingtipsinthetext,Howdidthewriterconnectthesetwoparts?,Manyfarmerswelcomedthemasagreatwaytostopcropdiseaseandincreaseproduction.Long-termuseofchemicalfertilizerscancausedamagetothelandand,evenmoredangerous,topeopleshealth.,Recently,however,therefore;meanwhile;anyhow;thus;otherwise;moreover;besidesetc.,Tips:wecanusesomeadverbstomakethetextclearandreasonable,Canyouspeakoutsomeadverbslikethese?,Canyoufindsomeconnectives（过渡词）inparagraph2.,Therearethreeproblems.First,theycandamageaswellas.Theyalsostayintheand.Inaddition,growtoofastto.,Tips:connectivesarenecessaryfordevelopment,first;second;finally;lastbutnotleast,etc.,Whatcanyoulearnfromthispart?Thefarmersfocusonkeepingtheirsoilrichandfreeofdiseaseandkeepingtheair,soil,waterandcropsfreefromchemicals.,Tips:severalphrasescanbeused.,1suchaswheatorcornthatneedrichandfertilesoil.2plantingpeanutsthatusethegroundssurfacefollowedbyvegetablesthatputdowndeeproots.,Readthefollowingsentence,andfindwhattheyhaveincommon?,Tips:clausesmakethepassagelogical（逻辑的）andbeautiful,Thetwosentencesbothincludeattibutiveclause.,Tips:wecanusesomeadverbs,connectives,phrasesandclausestobeautifyourcomposition.,请以“PLASTICORCLOTHBAGS?”为题模仿这篇文章的篇章结构和句子结构去写一篇说明文。,Discussionandpractice,PlasticOrClothBags?,illustration（阐明）comparisonconclusion,Para1:Para2:Para3:Para4:,Haveabriefillustrationofthetopic.Theproblemscausedbyusingplasticbags.Theadvanagesofusingclothbags.Conclusion.,Theproblemscausedbyplasticbags.,whitepollution,hardtobreakdown,beharmfultoourhealth,Theadvantageofusingtheclothbags.,canbeusedmanytimes,savealotofresources,Wecanmakethembyourselves,whichisveryinteresting,Overthepasthalfcentury,havebecomeverycommon.welcomedthemasawayto.Recently,however,wehavebeenfindingtha