chemical-or-organic-farming優(yōu)質(zhì)課評比課件

Whatdoyouknowaboutfarming?第一頁第一頁，共26頁。First,buyorselecttheseedsfromthestore.第二頁第二頁，共26頁。Second,weneedtoplow（犁田）orturnoverthesoil.第三頁第三頁，共26頁。Third,wesowtheseedsinthesoil.第四頁第四頁，共26頁。Finally,wecanharvestourgrain.

第五頁第五頁，共26頁。fertilizethesoiltoincreaseproductionofthe

crops

fertilizer第六頁第六頁，共26頁。fertilizerHowmanykindsoffertilizersdoyouknow?

chemicalfertilizers

natural

fertilizers第七頁第七頁，共26頁。chemicalfarmingorganicfarmingchemicalfertilizers

natural

fertilizersBetter？第八頁第八頁，共26頁。ChemicalOrOrganicFarming?第九頁第九頁，共26頁。Task1Skimming（3mins）Findoutthemainideaofthesefourparagraphs.第十頁第十頁，共26頁。EffectofchemicalfertilizerProblemscausedbychemicalfertilizers.P1.P2.Farmersandcustomersturntoorganicfarming.(advantages)Othermethodstokeepthesoilfertile.

P3.P4.第十一頁第十一頁，共26頁。Whyarechemicalfertilizerssopopularinfarmingtoday?Becausetheyarecheap.Theyareagreatwaytostopcropdiseaseandincreaseproduction.Theycancausedamagetotheland.Theyarebenefitforpeople’shealth.Task2ScanningParagraph1第十二頁第十二頁，共26頁。Theyareagreatwaytostopcropdiseaseandincreaseproduction.2.Whyarechemicalfertilizerssopopularinfarmingtoday?第十三頁第十三頁，共26頁。2.Whatproblemscanbecausedbyusingchemicalfertilizers?

First,theycan_________thelandby

_________thehelpfulbacteriaandpests.Theyalso________intheground,__________inpeople’sbodiesand________cancerorotherillnesses.Inaddition,itusuallygrowstoofasttobefullof____________.Paragraph2damagekillingstaybuildupleadtonutrition第十四頁第十四頁，共26頁。1.Whatisorganicfarming?2.Whataretheadvantagesoforganicfarming?3.Whatarethemethodstokeepthesoilfertile?1.Organicfarmingisfarmingwithoutusinganychemicals.Haha,we'veturnedtoorganicfarming.Paragraph3&4第十五頁第十五頁，共26頁。2.

Whataretheadvantagesoforganicfarming?

Thefarmers________keepingtheirsoilrich,________diseaseand_______theair,soil,waterandcrops_________chemicals.Paragraph3focusonreducingkeepingfreefrom第十六頁第十六頁，共26頁。Themethodstokeepthesoilfertile

usingnaturalwastefromanimalsasfertilizer.changingthekindofcropineachfield.plantingcropstousedifferentlevelsofsoil.plantinggrassbetweencropstoprevent…

Thesamegoal:____________________________________________________________________________________________togrowgoodfoodandavoiddamagingtheenvironmentorpeople’shealth.Paragraph3&41234第十七頁第十七頁，共26頁。4.Whatisthemainreasonforusingorganicfarmingmethods?Themainreasonforusingorganicfarmingmethodsistogrowgoodfoodandtoavoiddamagingtheenvironmentorpeople’shealth.第十八頁第十八頁，共26頁。

Inrecentdays,scientistshavediscoveredthatusing________fertilizersforalongtimecan_________________thelandandalsopeople'shealth.Thereareseveral__________causedbychemicalfertilizers.Theydamagetheland,stayinthewaterforalongtimewhichcan___________inpeople’sbodiesand____________manyillnesses.chemicalproblemscausedamagetobuildupFillintheblanksaccordingtothepassage.leadto第十九頁第十九頁，共26頁。________farmingisbecomingmorepopularwithsomefarmers.Organicfarmingdoesnotuseanychemicalsand_________keepingthesoilrich.Thisalso______theairandcrops___________chemicals.Therearemanyorganicfarming_________formakingthelandhealthyandproductive.Allofthesemethodstrytoproducegoodfoodandtokeeptheenvironmentandpeople’shealth.keepmethodsfocusonOrganicfreefrom第二十頁第二十頁，共26頁。請以“PlasticorClothbags?”為題模仿這篇文章的篇章結(jié)構(gòu)和句子結(jié)構(gòu)去寫一篇說明文。第二十一頁第二十一頁，共26頁。DiscussionandpracticePlasticOrClothBags?Para1:Para2:Para3:Para4:Haveabriefintroductionofthepresentsituation.(Effects)Theproblemscausedbyusingplasticbags.Theadvantagesofusingclothbags.Conclusion.第二十二頁第二十二頁，共26頁。PlasticorClothBagsOverthepasthalfcentury,___________havebecomeverycommonin___________.______welcomedthemasa_________wayto____________.Recently,however,wehavebeenfindingthattheycancausedamageto___________,even_________,topeople’shealth.PlasticbagsourdailylifeWeconvenientcarrygoodsenvironmentworse第二十三頁第二十三頁，共26頁。HomeworkReadthetextmorecarefullyafterclass,andunderlinesomeusefullanguagepoints.Finishthewriting.第二十四頁第二十四頁，共26頁。Overthepasthalfcentury,…h(huán)avebecomeverycommon….…welcomedthemasa…wayto….Recently,however,wehavebeenfindingthattheycan