Unit-3-Comparison-and-Contrast

Unit3Comparison&Contrast（对比与对照）LearningContent&Aim1.LearningContent:Thisunitisaproject-basedstudyongeneticallymodifiedfoodsandfoodsafety.2.LearningAim:Thisunitisaimedatourlearningtoevaluate,synthesizeandorganizetheinformationinthepatternofcomparisonandcontrast.Task1:FamiliarizingYourselfwithComparison&Contrast1.Information-arrangingApproachesTherearegenerallytwoapproachesofarranginginformation:1)Classification2)ComparisonandContrast2.Comparisonvs.Contrast1)Comparisonsshowsimilaritiesamongthingsandideaswhilecontrastsemphasizedifferencesamongthingsandideas.2)Thepurposeofcomparisonandcontrast:a.toobservetwoormorethingsinabetterway;b.toshowthesuperiorityofonethingoveranother;c.toexplainsomethingwhichisunfamiliartothereader.Task1:FamiliarizingYourselfwithComparison&ContrastReading1ElectricVehiclesandGasVehicles(P66)NewWords:1)Electricvehicle=电动汽车2)Gasvehicle=燃油汽车3)Autoindustry=汽车产业4)Churnout=快速且大量地生产5)DodgeCircuitEV=道奇电路电动车(electric-powered)6)DodgeChallenger=道奇挑战者(gas-powered)7)Musclecar=肌肉车8)Boldlook=狂野的外形9)Standardfeature=标准配置10)lithium-ionbattery=锂电池Task1:FamiliarizingYourselfwithComparison&ContrastReading1ElectricVehiclesandGasVehicles(P66)NewWords:11)Gasguzzling=耗油的12)V8engine=V8引擎内燃机(8个气缸成V型排列)13)gasoline=汽油14)Refuelagasvehicle=给燃油汽车加油15)Berefinedtogasoline=被提炼成汽油16)Rechargeanelectricvehicle=给电动汽车充电17)Astandardhouseholdoutlet=家用标准插座/接口18)socket=插座19)Chargingstation=充电站20)PlugAintoB=将A电器插入B插座中Task1:FamiliarizingYourselfwithComparison&ContrastReading1ElectricVehiclesandGasVehiclesQuestions:(P66)1)Whatarethetwosubjectsbeingcomparedandcontrastedinthispassage?Electricvehiclesandgasvehicles.2)Inwhichaspectdoesthepassagecomparethem?Theenergytheyuse,thedistance,thecostandconvenience.Task1:FamiliarizingYourselfwithComparison&ContrastReading1ElectricVehiclesandGasVehiclesQuestions:(P66)3)Whatarethesimilaritiesanddifferencesbetweenthetwosubjects?Similarities:theappearanceofmusclecars,allthestandardfeaturesandtheycanperformsimilarly.Differences:a.EnergyEV---lithium-ionbatteryisused,sofarlessenergyGV---guzzlingV8engineisused,sofarmoreenergyb.DistanceEV---150-200milesGV---14milespergalloninthecityand22onthehighwayTask1:FamiliarizingYourselfwithComparison&ContrastReading1ElectricVehiclesandGasVehiclesQuestions:(P66)3)Whatarethesimilaritiesanddifferencesbetweenthetwosubjects?Differences:c.CostEV--$6to$12aweekGV---$5agallond.ConvenienceGV---manypeopleandmuchenergyareusedtorefuelEV---onlyneedtoplugandrechargeitintoanoutletTask1:FamiliarizingYourselfwithComparison&ContrastReading1ElectricVehiclesandGasVehiclesQuestions:(P66)4)Howdoesthepassageorganizethesimilaritiesanddifference?Thewritercomparesandcontrastsbothvehiclesitemafteritem.Insuchapattern,thewriterstructureshisparagrapharoundpointsofcomparisonandcontrast,movingbackandforthbetweenthesubjects.5)Whichismoreeffective---a.listallsimilaritiesofthetwosubjects,thentheirdifferences;b.listthesimilaritiesanddifferencesofonesubject,thentheothersubject’s?Theformerone---listallsimilaritiesofthetwosubjects,thentheirdifferences.Task1:FamiliarizingYourselfwithComparison&ContrastUsingEnglishtoCompareandContrast(P67)1.Whatarethecommonlyusedphrasesincomparisonandcontrast?Sincecomparisonandcontrastisexaminingtwoormoresubjects/itemstodiscovertheirsimilaritiesanddifferences,thefollowingphrasesarecommonlyusedtoexpresstheirrelationships:1)Phrasestoexpresssimilarities:a.AislikeB/AissimilartoB/AiscomparabletoB/AisasimportantasBb.AresemblesB/AparallelsBc.Equally,A…/Likewise,A…/Similarly,A…/Inasimilarway,A…/Inasimilarmanner,A…/Inasimilarfashion,A…Task1:FamiliarizingYourselfwithComparison&ContrastUsingEnglishtoCompareandContrast(P67)1.Whatarethecommonlyusedphrasesincomparisonandcontrast?Sincecomparisonandcontrastisexaminingtwoormoresubjects/itemstodiscovertheirsimilaritiesanddifferences,thefollowingphrasesarecommonlyusedtoexpresstheirrelationships:2)Phrasestoexpressdifferences:a.AisunlikeB/AisdifferentfromB/AdiffersfromBb.UnlikeA,Bis…/IncontrasttoA,Bis…/ComparedwithA,Bis…/IncomparisonwithA,Bis…c.AisheavierthanB/AismorecostlythanB/AislessabundantthanB/AisnotasintelligentasBTask1:FamiliarizingYourselfwithComparison&ContrastEatingFreshFoodsorCannedFoods?(P68)NewWords:1)cannedfood=罐装食品2)flavor(n.)=（食物的）芬芳/香气3)nutrition(n.)=营养4)convenience(n.)=方便5)lifestyle(n.)=生活方式Task1:FamiliarizingYourselfwithComparison&ContrastEatingFreshFoodsorCannedFoods?(P68)Thelearningofthispartisconvertedintoparagraphdictation.Paragraph3:What’smore,thereisahealthfactorthataffectsbothofthem.Cannedfoodlosessomeoftheoriginalfreshfoodnutrientswhenstored,andalsohastobetinnedwithmanypreservativesandchemicalfactorsthatprolongtheshelflifeandapparentfreshnessofthefoodbutcouldbecometoxicifconsumedtoooften.Freshfood,ontheotherhand,oftencomesstraightfromafarmandhasallthenutrientsMotherNatureintendedforit.Task1:FamiliarizingYourselfwithComparison&ContrastEatingFreshFoodsorCannedFoods?(P68)Thelearningofthispartisconvertedintoparagraphdictation.Paragraph4:Aswecansee,freshfoodoffersmanybenefitsthatcannedfoodlacks.Therefore,aninformeddinersh