高一英语人教版必修4 Unit 2 working the land usiing language.ppt

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1、UsingLanguageChemicalorOrganicFarmingWorkingtheland1.出国旅行时很激动人心的。2.在这儿等也没用，咱们走回去吧。3.我记得在哪儿见过他。Travellingabroadcanbeveryexciting.It’snousewaitinghere,let’swalkback.Irememberseeinghersomewhere.5.即使最聪明的孩子，也需要指教。4.我后悔没听你的劝告。Iregretnotfollowingyouradvice.Eventhecleverestchildneedsteaching.Whatdofarm

2、ersusuallyputonthesoiltomakecropsgrowfast?Itisfertilizer.Howmanykindsoffertilizersdofarmersuse?Therearetwokinds.Theyarechemicalfertilizersandnaturalfertilizers.Whichkinddofarmersusewhentheyaredoingorganicfarming?Doyouknowaboutorganicfarming?ORGANICFARMINGOrganicfarmingissimplyfarmingwithoutusin

3、ganychemicals.ReadthepassageUnderlinethetopicsentenceofeachparagraph.HowmanywaysfarmersusetohelpcropsgrowarementionedinthepassageComprehendingLong-termuseofchemicalfertilizerscancausedamagetothelandandpeople’shealth.Farmersandcustomersturntoorganicfarming.Othermethodstokeepthesoilfertile.Proble

4、mscausedbychemicalfertilizers.P1.P2.P3.P4.topicsentencewaystohelpcropsgrowChemicalfertilizersusenaturalwastefromanimalsasfertilizerschangethekindofcropineachfieldeveryfewyearsplantdifferentcropswithdifferentlengthsofrootsplantgrassbetweencropsandthenleaveitinthegroundorganicfarmingchemicalferti

5、lizersadvantagedisadvantageagreatwaytostopcropdiseaseandincreaseproductionlongternuseofthesefertilizerscancausedamageto…problemsdamage__________by___________________________________________________.chemicalsstayin_________________affect_____________________________leadto________________________

6、____thelandkillingthehelpfulbacteriaandpestsandtheharmfulones.thegroundandundergroundwatercropsandanimalsandhumansThechemicals_________________________builduoinpeople’sbodiescancerorotherillessesfruit,vegetablesandotherfoodGrowtoofasttobefullofmuchnutritionorganicfarmingWhatisorganicfarming?Met

7、hodsoforganicfarmingAdvantagesofmethodsFarmersusenaturalwastefromanimals.Thismakesthesoilricherinmineralsandsomorefertile.Thisalsokeepstheair,soil,waterandcropsfreefromchemials.withoutusinganychemicals.MethodsoforganicfarmingAdvan