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1、Period 3chemicalproductionbacteriapestnutritionmineraladj.化学的；关于化学的化学的；关于化学的n.生产；制造生产；制造n.细菌细菌n.害虫；害兽；害鸟害虫；害兽；害鸟n.营养；滋养；食物营养；滋养；食物n.矿物；矿石矿物；矿石WarmingupWordsPreviewdiscoveryfocussoilreducerootn.发现；发觉发现；发觉n.焦点；中心点焦点；中心点vt.集中；聚焦集中；聚焦n.土壤土壤vt.减少；减缩减少；减缩n.根；根源根；根源skimunderlinesummarycommentvt.浏览；略读浏览；略读v
2、t.画底线标出；强调画底线标出；强调n.总结；摘要；概要总结；摘要；概要n.评论；议论评论；议论vi.&vt.表达意见表达意见;做出评论做出评论buildupleadtofocusonkeepfreefrom/of逐渐增强逐渐增强;建立建立;开发开发导致导致;造成造成(后果后果)集中集中(注意力，精力等注意力，精力等)于于使使免受免受(影响，伤害等影响，伤害等)；使使不含不含(有害物有害物)FirstreadingReadthepassage,thenfindoutthemainideaofeachparagraph.Para1:Para2:Para3:Whatisorganicfarming
3、?Farmersprefernaturalwastefromanimals.Farmerschangecropseverytwoorthreeyears.PresentationSecondreadingReadthetextagainandanswerthefollowingquestions:1.Whatisorganicfarming?2.Whatproblemsarecausedbyusingchemicalfertilizers?3.Whydoorganicfarmersgrowpeasorsoybeansaftercornorwheat?1.Whatisorganicfarming
4、?Organicfarmingmeansgrowingcropswithoutchemicalfertilizers.2.Whatproblemsarecausedbyusingchemicalfertilizers?Therearethreeproblems.First,chemicalfertilizersaffectthesoilandthewatersupplybadly.Second,theyallowfarmerstogrowthesamecropyearafteryearandexhaustthesoil.Third,theykillbothhelpfulandharmfulpe
5、sts.3.Whydoorganicfarmersgrowpeasorsoybeansaftercornorwheat?Farmersgrowpeasorsoybeansaftercornorwheatsothatpeasandbeanscanputmineralsbackintothesoil,makingitrichandhealthyandreadytogrowmorewheatorcorn.ThirdreadingReadthetextagain,andfillinthefollowingforms.2.Thesoilisnotexhausted.2.Peasandsoybeansre
6、newthemineralsinthesoilbecomesrichandhealthy.3.Theyusethesoiltobestadvantage.3.Theyplantcropsthatneedsurfacesoilandnextcropsthatgrowatadeeperlevel.Sothewindandwaterdoesntcarryawaythesoil.Alltherichnessofthesoilisused.AdvantagesoforganicfarmingReasons1.Thismakesthesoilricherinmineralsandsomorefertile
7、.1.Farmersusenaturalwastefromanimals.Whatisthedisadvantageofusingchemicalfertilizers?1.Leavingchemicalsinthegroundforalongtimeisnotgoodforthesoilorthewatersupply.2.Farmeroftengrowthesamecropyearafter.Asaresult,thesoilgetsexhausted.3.Chemicalfertilizerskillbothhelpfulandharmfulbacteriaandpests.Langua
8、gepoints1Thesechemicalsinthefoodsupplybuildupinpeoplesbodiesovertime.buildup增强增强;建立；开发建立；开发Hardworkingconditionsbuildupcharacter.艰苦的工作条件能磨练人的性格。艰苦的工作条件能磨练人的性格。2Manyofthesechemicalscanleadtocancerorotherillnesses.leadto:导致；造成导致；造成Toomuchworkandtoolittlerestoftenleadtoillness.过量的工作和过少的休息会引起疾病。过量的工作和过少
9、的休息会引起疾病。AllroadsleadtoRome.条条大道通罗马。条条大道通罗马。3Theyfocusonkeepingtheirsoilrichandfreeofdisease.focuson:集中集中(注意力，精力等）于注意力，精力等）于Youshouldfocusyourattentiononyourwork.把注意力集中在你的工作上。把注意力集中在你的工作上。Olympus:Focusonlife.奥林巴斯：瞄准生活。奥林巴斯：瞄准生活。4Thisalsokeepstheair,soil,waterandcropsfreefromchemicals.keepsfreefrom/o
10、f:使使免受（影免受（影响，伤害登）；使不含（有害物）响，伤害登）；使不含（有害物）keepfrom:阻止阻止;妨碍妨碍Ihopeyouwillkeepfromdoinganythingrash.我希望你不要做出任何鲁莽的事情来。我希望你不要做出任何鲁莽的事情来。WritingUsetheideasyoudiscussedabovetowriteareportabouthowusefulJiaSixiesideasareformoderntimes.Usethestepsonpage53tohelpyou.1,600yearsagotheChinesewriterJiaSixiewroteab
11、ookQiMinYaoShuaboutgoodagriculturalpractices.TodaysomeofJiaSixiesideasarestillveryusefultoourmoderntimes,butwehavesomeproblemstodaythatheneverhadinhistime.SamplewritingSomeofJiaSixiesideasarestillveryusefultoourmoderntimes.Farmersstillcleartheirfieldsofweeds.Theystillploughdeeplythefirsttimeandlessd
12、eeplythesecondtime.Inaddition,farmerseverywherestillunderstandthatchangingcropsinthefieldsisstillimportant.However,wehavesomeproblemstodaythatJiaSixieneverfacedinhistime.Wehaveenvironmentalpollutionthatharmsfieldsandcrops.Wehavegreatcompetitioninthemarketplace.Wehavenew,dangerousandpowerfulcropdisea
13、ses.AlthoughourmodernfarmersstillusesomeofJiaSixiesideastoday,theyfaceproblemsthatwereneverheardofinJiaSixieday.Exercises选词填空选词填空（occupation,job,profession,work)a.Pleasestateyourname,ageand_below.b.Ihaveafew_todointhehousethismorning.c.Lookingafterchildrenalldayishard_d.Myhusbandisattheverytopofmedi
14、cal_.occupationjobsworkprofession完成句子：完成句子：a.Stoptalkingand_.b.(专心工作专心工作)c.b.Everyone_(集中注意力集中注意力)whentheyhaveanexam.d.c.Idecidedto_(全力以赴全力以赴)findingsomewheretolive.concentrateonyourworkconcentratesthemindconcentrateallmyeffortson2.Difficulties1)CanIgooutonastoryimmediately?2)我可以马上出去采访吗？我可以马上出去采访吗？3)on后接一些名词如后接一些名词如visit,holiday,business,trip等，等，与与4)come,go等动词连用，用来说明活动或状态。等动词连用，用来说明活动或状态。5)Practice:6)她决定今年暑假去一趟英国。她决定今年暑假去一趟英国。7)Shedecidedtogo_toEnglandthis8)summer.9)他去了长途旅行。他去了长途旅行。10)Hehasbeenaway_.onavisitonalongtripHomework1.Trytocorrecttheposter.2.Finishtheexercisesonworkbook.
