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Unit2WorkingthelandUsinglanguage231.Masterthefollowingnewwords,phrasesandsentencesinusinglanguageproduction,bacteria,pest,nutrition,discovery,soil,rootregret,reduce,regretbuildup,keep…freefrom,leadto,focuson,inadditionSomeorganicfarmerspreferplantinggrassbetweencropstopreventwindorwaterfromcarryingawaythesoil…2.Learntheadvantagesoforganicfarming.本课首先观看嘉世有机农业视频，引出本节题目“化学耕作还是农业耕作”。进而讨论化学耕作和有机耕作的概念。化学耕作的弊端是什么？为什么农民转而开始有机耕作？有机耕作通过什么方法来保持土地的肥沃？然后让学生听课文录音，了解短文的主旨以及各段的大意。最后讲解短文的语言点。最后通过改写的短文加深对本文的了解。讲解农业耕作是配有相关的视频，有助于学生理解。总结概括文章和段落大意，提高学生的理解和表达能力。听课文录音有助于学生听力水平的提高。ReadingCHEMICALORORGANICFARMING?Whatcanweharvest?Nopains,nogains.嘉世有机农业AddfertilizerintothesoilHowcanfarmersmaketheplantsgrowwell?Howmanykindsoffertilizersdofarmersuse?naturalfertilizerorganicfarmingchemicalfertilizerchemicalfarmingTwokinds.Discussion:Whichkindoffarmingisbetter?BetterLet’slearnmoreaboutchemicalandorganicfarming!Listentothetapecarefully.usinglanguagereadingorganicfarmingisbecomingmorepopular.Themainideaofthetext:Long-termuseofchemicalfertilizerscancausedamagetothelandandpeople’shealth.Problemscausedbychemicalfertilizers.ThemainideaofeachparagraphP1.P2.Farmersandcustomersturntoorganicfarming.Othermethodstokeepthesoilfertile.P3.P4.1.Whyarechemicalfertilizerssopopularinfarmingtoday?A.Becausetheyarecheap.B.Theyareagoodwaytostopcropdiseaseandincreaseproduction.C.Theycancausedamagetotheland.D.Theydogoodtopeople’shealth.ParagraphIChemicalfarmingadvantagesproblemscausestopcropdiseaseincreaseproductiondamagethelandbykillingthehelpfulbacteriaandpestsaswellastheharmfulones.affectcropsbystayinginthegroundandundergroundwaterforalongtimeleadtocancer/illnessesbybuildingupinpeople’sbodiesovertimehavelessnutritionbygrowingtoofastParagraph2OrganicfarmingNaturalwastefromanimalsMakethesoilricherinmineralsandmorefertileAhealthysoilReducediseasesincropsHelpcropsgrowstrongandhealthyParagraph3Organicfarmingmethodsadvantagesusenaturalwastemakethesoilrichinmineralschangethecropputmineralsbackintosoil,making…plantcropswithdifferentrootsusedifferentlevelsoflandplantgrassbetweencropsprevent…from…,anaturalfertilizerParagraph41.WhichstatementisWRONGaccordingtothetext?A.Allcropsareorganic.B.Recently,theterm“organicfarming”hasgainedanothermeaning.C.Allfarmersusefertilizers.D.Scientistsbelievesomechemicalfertilizersarebetterforpeople.Readagainandchoosethebestanswer.D2.Whichisnotthereasonwhyorganicfarmersprefernaturalwastefromanimals?A.Itcankeepthefoodfreefromchemicals.B.Itcankeeptheair,soilandwaterfreefromchemicals.C.Itcankillharmfulpests.D.Itcanmakethesoilricherinmineral.C3.Whatistheadvantageofusingchemicalfertilizers?A.Leavingchemicalsinthegroundforalongtimeisgoodforwatersupply.B.Theycangetthesoilexhausted.C.Theycankillhelpfulbacteria.D.Theycankillharmfulpest.D4.Theorganicfarmersdothefollowingsexcept______.A.addingfertilizerswhichisrichinmineralB.changingcropseverytwoorthreeyearsC.plantingseedsindifferentlayersofthesoilD.plantinggrassbetweencropstopreventthesoilfrombeingblownawayA1.Whatis“organicfarming”?Answerthequestions.Itreferstocropsgrowingwithnaturalratherthanchemicalfertilizers.2.Whatdoorganicfarmersprefertouseasfertilizer?Naturalwastefromanimals.Becausepeasandbeanscanputmineralsbackintothesoil,makingitrichandhealthyandreadytogrowmorewheatorcorn.3.Whydoorganicfarmersgrowpeasorsoybeansaftercornorwheat?4.Whatisthemaingoalforusingorganicfarmingmethods?TogrowgoodfoodandtoavoiddamagingTheenvironmentorpeople’shealth.•Nouseofchemicalfertilizers•Awayfromindustrialareas•Awayfromdirtywatersupply•NoairpollutionAsummaryoforganicfarming:FillintheblanksManyfarmerswelcome______fertilizersbecausetheyaregreatwaytostopcropdiseaseandincrease_________.Butthesechemicalcan____toillnesses.Sofarmersbegantoturnto______farming.They____onkeepingtheirsoilrichand_____ofdisease.Organicfarmersoftenpreferusing______wasteofanimalsasfertilizer.Thiskeepsthesoilfree____chemicals.Therearemanymethodstokeepthesoil_____.Themethodshavethesamegoal:togrowgoodfoodandavoiddamagingthe_________orpeople’shealth.chemicalproductionfocusfreenaturalfromfertileenvironmentleadorganic1.Thesechemicalsinthefoodsupplybuildupinpeople’sbodiesovertime.LanguagePointsHardworkingconditionsbuildupcharacter.buildup增强;建立;开发艰苦的工作条件能磨练人的性格。2.Manyofthesechemicalscanleadtocancerorotherillnesses.AllroadsleadtoRome.leadto导致；造成条条大道通罗马。3.Theyfocusonkeepingtheirsoilrichandfreeofdisease.focuson:集中(注意力,精力等)于Youshouldfocusyourattentiononyourwork.把注意力集中在你的工作上。4.Thisalsokeepstheair,soil,waterandcropsfreefromchemicals.4.Youmusttakecaretokeepthewoundfreefromthedirt.keeps…freefrom/of:使…免受(影响,伤害等);使不含(有害物)你必须照顾好伤口，免受灰尘的伤害。5.reducev.减少,降低e.g.公司尽力通过减少花销来提高利润。Thecompanytriestoincreaseprofitsby_______________.今年我们已经减少了业务开支。We______________expensesthisyear.reducingcostshavereducedExpressions1.化肥2.对…造成损害3.洗掉某物4.导致;造成(后果);通往5.逐渐增强,建立6.另外(还有)7.使…免受(影响);8.集中(注意力、精力)于9.每隔几年10.避免做…chemicalfertilizerscause/dodamagetowashoffleadtobuildupinaddition(to)keep…freefrom/offocusoneveryfewyearsavoiddoingExerciseswashoff,leadto,buildup,inaddition(to),keep…freefrom/of,