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

ChemicalVersusOrganicFarmingUnit5WorkingtheLandReadingforwritingLearningobjectivesInthisclasswewill:Understandthemeaningsofchemicalfarmingandorganicfarming.Knowtheadvantagesanddisadvantagesofthem.Expressopinionsonthem,andwriteanargumentativeessay.

ReadingPART01。chemical[ˈkemɪkl]化学的bacteria[bækˈtɪəriə]细菌pest[pest]害虫Leadin

Learnsomenewwords.production

生产；制造nutrition[nuˈtrɪʃn]营养mineral[ˈmɪnərəl]矿物质Pre-reading1.Whatisthefarmerdoinginthepicture?

2.Whatisthefarmerwearing?Why?Thefarmerissprayingchemicalpesticidesonthecrops.Thefarmeriswearingamaskandhat.Becauseitmayharmpeople’shealth.Lookatthephotoanddiscuss.v.喷洒

Whatischemicalfarming?Whatisorganicfarming?ReadingOrganicfarmingissimplyfarming________________Chemicalfarmingisfarmingwith_________,especially___________________and_________________.whilechemicalschemicalpesticidesartificialfertilizerswithoutchemicals.

Activity1:Readpara.1andpara.3,andthenanswerthefollowingquestions.ReadingD.TheproblemswithchemicalfarmingB.Whyman-madechemicalsarestillusedinC.OrganicmethodsforproducingrichsoilA.WhatorganicfarmingisDACBbacteriaandinsectsprohibiteddamagetheyusegrowtoofastnutritionnaturalwastefromanimalschangethekindofcropeveryyeardifferentdepthsdemandforfoodaroundtheworldUnderstandthestructureofthetext.TitleThe_______and_________ofchemicalfarming.benefitsproblemsPart1:(Para1&2)Whatorganicfarmingis

Part2:(Para3)Part4:(Para5)Conclusion

Part3:(Para4)Organicmethodsforproducingrichsoil

Reading

WritingPART02What’stheauthor’sattitudetowardschemicalfarmingandorganicfarming?A.NegativeB.ambiguous(模糊的)C.objective（客观的）

D.supportive

（支持的）

What’syouropiniononchemicalororganicfarming?Writeanargumentativepassageaboutit.Writing

Writing

Activity3:Summarizetheadvantagesanddisadvantagesofchemicalfarmingandorganicfarming.ChemicalFarmingOrganicFarmingadvantagesdisadvantages

advantages

disadvantagesagreatwayto

fightcropdiseases,

increaseproduction.harmboththelandandpeople’shealth,lessnutrition,essentialminerals,andflavour.

makesthesoilricherinminerals,

keepstheair,soil,waterandcropsfreeofchemicals,avoiddamagetotheenvironmentortopeople’shealth.organicfarmingisnowherenearabletomeetthehighdemandforfood,moreeffortsandhighercost.Finishtheoutline:Youropinions:Topicsentence:Inmyopinion,_______farmingispreferableto______farmingbecause____________________.Inmyeyes,/Frommypointofview,/WhatIfirmlybelieveinisthat…Yourconclusion:Insummary,/Inaword,/Allinall,/Tosumup,…Part3Part2Yourpoints:Point1:Tobeginwith,______________________________.Forinstance,__________.Point2:What’smore,____________________________________________________.Point3:Finally,_________________________________________________________.Part1Writing

Writing

Activity4:Readasampleessaytolearnhowtowriteanargumentativepassage.

Inmyopinion,organicfarmingispreferabletochemicalfarmingbecauseofthebenefitstotheenviornmentandtopeople,andbecauseorganicfoodisnutritious.Tobeginwith,chemicalfarmingharmstheenvironment.Forinstance,thechemicalstendtoaccumulateinthesoilandwater,andareabsorbedinthefoodchain,wheretheypoisonwildlifeanddomesticanimals.What’smore,chemicalpesticidesmaycauseushealthproblemsorgiveusdiseasessuchuscancer.Finally,organicfoodisgenerallymorenutritiousthanfoodgrownwithman-madechemicals.Insummary,I’mconvincedthatorganicfoodwillbemoreandmorepo