最新chemical-or-organic-farming优质课评比课件教学讲义PPT课件.ppt

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1、chemical-or-organic-farming优质课评比课件First,buyorselecttheseedsfromthestore.Second,weneedtoplow（犁田）orturnoverthesoil.fertilizerHowmanykindsoffertilizersdoyouknow?chemicalfertilizersnaturalfertilizerschemicalfarmingorganicfarmingchemicalfertilizersnaturalfertilizersBetter？ChemicalOrOrganicFarmi

2、ng?Task1Skimming（3mins）Findoutthemainideaofthesefourparagraphs.EffectofchemicalfertilizerProblemscausedbychemicalfertilizers.P1.P2.Farmersandcustomersturntoorganicfarming.(advantages)Othermethodstokeepthesoilfertile.P3.P4.Whyarechemicalfertilizerssopopularinfarmingtoday?Becausetheyarecheap

3、.Theyareagreatwaytostopcropdiseaseandincreaseproduction.Theycancausedamagetotheland.Theyarebenefitforpeople’shealth.Task2ScanningParagraph12.Whatproblemscanbecausedbyusingchemicalfertilizers?First,theycan_________thelandby_________thehelpfulbacteriaandpests.Theyalso________intheground,____

4、______inpeople’sbodiesand________cancerorotherillnesses.Inaddition,itusuallygrowstoofasttobefullof____________.Paragraph2damagekillingstaybuildupleadtonutrition1.Whatisorganicfarming?2.Whataretheadvantagesoforganicfarming?3.Whatarethemethodstokeepthesoilfertile?1.Organicfarmingisfarmingwit

5、houtusinganychemicals.Haha,we'veturnedtoorganicfarming.Paragraph3&42.Whataretheadvantagesoforganicfarming?Thefarmers________keepingtheirsoilrich,________diseaseand_______theair,soil,waterandcrops_________chemicals.Paragraph3focusonreducingkeepingfreefromThemethodstokeepthesoilfertileusingn

6、aturalwastefromanimalsasfertilizer.changingthekindofcropineachfield.plantingcropstousedifferentlevelsofsoil.plantinggrassbetweencropstoprevent…Thesamegoal:____________________________________________________________________________________________togrowgoodfoodandavoiddamagingtheenvironmen

7、torpeople’shealth.Paragraph3&41234Inrecentdays,scientistshavediscoveredthatusing________fertilizersforalongtimecan_________________thelandandalsopeople'shealth.Thereareseveral__________causedbychemicalfertilizers.Theydamagetheland,stayinthewaterforalongtimewhi