Unit5WorkingtheLandUsingLanguage课件高中英语人教版选择性

ChemicalVersusOrganicFarmingUnit5WorkingtheLandHeissprayingpesticidesLead-inLookandanswerWhatarethefarmersdoing?HeisfertilisingthesoilHeisusingorganicfertiliserOrganicfertiliserisbetterthanchemicalfertiliserbecauselong-termuseofchemicalpesticidesandartificialfertiliserscancauseharmtopeopleandtheenvironment.

Pre-readingActivity1:BrainstormWhatkindsoffertilisersdotheyuse?Whichoneisbetter?ChemicalfertiliserOrganicfertiliserActivity2Readthetext,andthenanswerthequestions.While-readingPara.11.What’schemicalfarming?Chemicalfarmingisfarmingusingchemicalpesticidesandartificialfertilizers.Para.3What’sorganicfarming?Organicfarmingissimplyfarmingwithoutusinganychemicals.Para.14.Whatisoneproblemwiththeuseofchemicalfertilisers?

Cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.Para.25.Howisorganicfarmingdifferentfromchemicalfarming?Organicfarmingissimplyfarmingwithout

usinganychemicals.Organicfarmersfocusonkeepingtheirsoilrichandfreeofdiseases

throughnaturalmeans.Para.3Paragraph1&2

A.WhatorganicfarmingisParagraph3

B.Whyman-madechemicals

arestillusedinfarmingParagraph4

C.Organicmethodsforproducing

richsoilParagraph5

D.Theproblemswithchemical

farmingPara-graphDetail1-2•Pesticidescankillhelpful_______________.•Somepesticideshavebeen___

___because

ofthe

_________.•Cropsgrownwithchemicalfertilisersusually

_________tobefullof_________.3• Manyorganicfarmersuse______

___asfertiliser.4•

Theyoften_________grownineachfield______.•

Theyalsoplantcropsthatuse_________ofthe

soiltohelpkeepitrich.5Organicfarmingisnowherenearabletomeetthehigh

_________.bacteriaandinsectsprohibiteddamagetheycausegrowtoofastnutritionnaturalwastefromanimalschangethekindofcropeveryyeardifferentdepthsdemandforfoodaroundtheworldPost-reading

Activity4

Discusstheadvantagesanddisadvantagesoforganicandchemicalfarmingingroups.

FarmingAdvantagesDisadvantagesChemicalfarming............OrganicfarmingFightcropdiseaseIncrease

productionLowercostCropslookbeautifuloutsideHarmthelandHarmpeople’shealthHarmtheenvironmentCropsarelessinnutritionGoodfoodAvoidingdamagetotheenvironmentortopeople’shealthCannotmeetthedemandforfoodMoreeffortsandhighercostSmellygases

Activity5Decidewhetheryousupportchemicalfarmingororganicfarming.Comeupwiththreemainpointstosupportyouropinion.Completetheoutlinebelow.Topicsentence:Inmyopinion,_____farmingis

preferableto____

__

_farming

because____________________________Point1:_________________________________________Point2:_________________________________________Point3:_________________________________________Conclusion:______________________________________organicchemicalitsmanyobviousadvantages.

Organicfarmerstrytoavoidusingchemicalpesticidesandfertilizerstohelpcropsgrow.Organicfarmersfocusonkeepingtheirsoilrichandfreeofdiseasethroughnaturalmeans.Organicfoodisnotonlysafeandhealthybutalsomorenutritiousandtastesbetter.Allinall,I’minfavouroforganicfarming.expressyouropinions:Inmyeyes…Inmyopinion...I’mopposedto…I’dprefer…because…I’drather...Ithink/believe/guessthat...Frommypointofview,…WhatIfirmlybelieveinisthat…Myview/opinion/beliefisthat...Myimpressionisthat...Ihaveafeelingthat...I’mfullyconvinc