Unit5WorkingthelandUsingLanguage課件高中英語人教版選擇性(1)2

Unit5WorkingthelandUsingLanguage1.Tolearnthedifferencesbetweenchemicalandorganicfarming2.Tolearntoanalyzeadvantagesanddisadvantages.3.ToadvocateorganicfarmingaroundusLearningaimsWhatcanweputonthesoiltomakeitgrow?chemicalorganic________fertilizers________fertilizersfertilizersLead-inPrepareforstructurePrepareforcontentProductionHomeworkCHEMICALVERSUSORGANICFARMINGvs.Whichoneisbetter?Whichonedoyousupport?化學(xué)農(nóng)業(yè)有機(jī)農(nóng)業(yè)Lead-inPrepareforstructurePrepareforcontentProductionHomework1.Whatisthetextabout?ChemicalfarmingOrganicfarming

picturestitle2.Whattypeofwritingisit?A.Narration(記敘文)B.Exposition(說明文)C.Argumentation(議論文)

Pre-readingOrganicmethodsforproducingrichsoilParagraph5ReadforthemainideaWhatorganicfarmingisTheproblemswithchemicalfarmingWhyman-madechemicalsarestillusedinfarmingParagraph1&2Paragraph3Paragraph4A.C.B.Part1(para1&2)The_______________and_______________ofchemicalfarming.Part2(para3&4)Whatorganicfarmingisandhowitkeepthe_______rich.Part3(para5)conclusionchooseitsstructure.Lead-inPrepareforstructurePrepareforcontentProductionHomeworkbenefitsproblemssoilP1P2P3P4P5P1P1P5P5P2P2P3P4P3P4argumentsupportingdetail1supportingdetail2supportingdetail3supportingdetail4supportingdetailsFindouttheargumentandthesupportingdetails.

Lead-inPrepareforstructurePrepareforcontentProductionHomeworkHowdidtheauthorconnectthesesupportingdetailstogetherlogically?differentconjunctions（連接詞）forexamplenotonly…butalsoinadditioninfactasforbutaswell…Lead-inPrepareforstructurePrepareforcontentProductionHomeworkTomakethepassagemorecoherent,we'dbetterusesometransitionsbetweenideas.Examinethesesignpostsandnametheirfunctions.TransitionwordsFunctionForexample,…Illustrating/supportyourideas…,butalso…AddingmoreinformationandemphasisingInaddition,…AddingmoreinformationInturn,…SequencingInfact,…Illustrating/EmphasizingAsfor…Introducinganewtopic/thing…,but…Contrasting…,and…aswellAddingmoreinformationReadfortransitionalwords&phrases(Para.1-2)AdvantagesDisadvantages

1.2.harmingtheland:killingharmful__________________aswellas_________________harmingpeople’shealth:Thesechemicalsmaymakepeople_____andeven_______________Cropsgrowtoofasttobe

___________________.bacteriaandinsectsthehelpfulonesillrichinnutritioncausecancerfight

cropdiseaseincreaseproductionReadforinformationChemicalfarmingPart2(para3&4)Whatorganicfarmingisandhowitkeepthesoilrich.supportingdetailsBenefit:keepthesoilrich.Problem:can’tmeetthehighdemand.Lead-inPrepareforstructurePrepareforcontentProductionHomeworkWhataretheorganicmethodsmentionedinthetext(Para3&4)?1.usenaturalwastefromanimalsasfertilizer.2.changethekindofcropgrownineachfieldeveryyear.3.plantdiversecropsthatusedifferentdepthofsoil.ReadforinformationOrganicfarmingtomakethesoil

richer

inmineralstoputimportantmineralsbackintothegroundtokeepthesoilrichchemicalfarmingorganicfarmingbenefitsproblemsfightcropdiseaseincreaseproductionlowercostcropslookbeautifuloutside......avoidingdamagetotheenvironmentortopeople'shealth......harmthelandharmpeople’shealthharmtheenvironmentcropsarelessinnutrition......cannotmeetthedemandforfoodmoreeffortsandhighercostsmellygases......summaryandbrainstorming5yuan/kg30yuan/kgNormaltomatoesOrganictomatoesDrawanoutlineLead-inPrepareforstructurePrepareforcontentProductionHomeworkUseyouroutlinetowriteanshortargumentativeessaygivingyouropiniononchemicalororganicfarming.Lead-inPrepareforstructurePrepareforcontentProductionHomeworkP572)10分10分10