必修4-unit2-chemical-or-organic-farming

我爱记单词chemicalproductionbacteriapestnutritionmineraldiscoveryadj.化学的;关于化学的n.生产;制造n.细菌n.害虫;害兽;害鸟n.营养;滋养;食物n.矿物;矿石n.发现;发觉focussoilreducerootskimunderlinesummarycommentn.焦点;中心点vt.集中;聚焦n.土壤vt.减少;减缩n.根;根源vt.浏览;略读vt.画底线标出;强调n.总结;摘要;概要n.评论;议论vi.&vt.表达意见;做出评论Expressionspreviewbuildupleadtofocusonkeep…freefrom/of逐渐增强;建立;开发导致;通向通往集中(注意力,精力等)于使……免受(影响,伤害等)；使……不含(有害物)1.Haveyoueverbeentothecountryside?2.Doyouknowhowtoworkonafarm?Step1:warmingupLet’sgotothefarm!First,buytheseedsfromthestore.Second,weneedtoplow（犁田）orturnoverthesoil.Third,wesow（播种）theseedsinthesoil.Finally,wecanhaveaharvest.toimprovetheoutputofthecropsfertilizerwaterthecropridthesoiloftheweedfertilizethesoilkilloffthepesttoimprovetheoutputofthecropfertilizerHowmanykindsoffertilizersdofarmersuse?Therearetwokinds.Theyarechemicalfertilizersandnaturalones.chemicalfertilizersnaturalfertilizersChemicalOrOrganicFarming?ReadingTask1Listening（3mins）Findoutthemainideaofthesefourparagraphs.Long-termuseofchemicalfertilizerscancausedamagetothelandandpeople’shealth.Problemscausedbychemicalfertilizers.P1.P2.Farmersandcustomersturntoorganicfarming.Othermethodstokeepthesoilfertile.P3.P4.Task2CarefulReadingchemicalfertilizersWhyarechemicalfertilizerssocommoninfarmingtoday?Manyfarmerswelcomedthemasagreatwaytostopcropdiseaseandincreaseproduction.Paragraph12.Afterthelong-termuseofchemicalfertilizers,whathavescientistsfound?Long-termuseofchemicalfertilizerscancausedamagetothelandand,evenmoredangerous,topeople’shealth.Paragraph2problemseffectstheydamagethe_____killingthe________bacteriaandpestsaswellasthe_______onesChemicalsstayinthe______and___________waterfora______timethisaffects______,______and_______fruit,vegetablesandotherfoodgrowntoo_____;theylookso________notbefullofnutrition;more_______thanvitaminsandmineralslandhelpfulharmfulgroundundergroundlongcropsanimalshumansfastbeautifulwater•Paragraph31.Somefarmersandmanycustomersbegintoturntochemicalfarming.2.Organicfarmingissimplyfarmingwithoutusinganyfertilizer.3.Organicfarmerspreferusingnaturalwastefromanimalsasfertilizers.FFTParagraph3and4Thewaystokeepthesoilfertile1.2.3.4.usingnaturalwastefromanimalsasfertilizerchangingthekindofcropineachfieldplantingcropstousedifferentlevelsofsoilplantinggrassbetweencropstopreventwindandwaterfromcarryingawaythesoil•Inrecentdays,scientistshavediscoveredthatusing________fertilizersforalongtimecanhurtthelandandalsopeople's_______.Thereareseveral__________causedbychemicalfertilizers.Theyhurtthehealthoftheland,_____inthewaterforalongtimeandgetintopeople's________throughtheirfood.chemicalbodiesproblemshealthstayFillintheblanksaccordingtothepassage.•________farmingisbecomingmorepopular.Somefarmersandmany_________turntoit.Organicfarmingdoesnotuseanychemicals.customersOrganicLanguagePointsbuildup增强;建立;开发Hardworkingconditionsbuildupcharacter.Doingregularexercisecanbuildupmyhealth.Manyofthesechemicalscanleadtocancerorotherillnesses.1.Toomuchworkandtoolittlerestoftenleadtoillness.2.AllroadsleadtoRome.3.Waronlyleadstoviolence.Theyfocusonkeepingtheirsoilrichandfreeofdisease.•Youshouldfocusyourattentiononyourwork.•Weshouldfocusourenergyonourcustomers’needs.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.reducingcostshavereducedThisalsokeepstheair,soil,waterandcropsfreefromchemicals.1.Weputourbooksintheboxtokeepthemfreefromdust.2.Youshouldkeeptheareafreefrompollution.HomeworkDiscussionIfyouarealandowner,youwanttogrowsomekindsofcrops,whatwillyoudo?willyouuseanyfertilizertoimprovetheproduction?Why?