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U3-GrammarAThecomparativeofAThecomparativeofadjectivesadjectivesWhenwecomparetwopeopleorthings,wecanusethecomparativeofadjectives.Weformthecomparativeofadjectiveslikethis:AdjectivesComparativeofadjectivescheapcheapertalltallerinterestingmoreinterestingexpensivemoreexpensive•Toformthecomparativeofadjectives,weoftenadd_____toshortadjectivesanduse______withlongadjectives.•Weoftenuse________afterthecomparativeofadjectives.WorkouttheruleMybookismoreinterestingthanyours!-ermorethanAThecomparativeofAThecomparativeofadjectivesadjectivesEX.Completetheconversationbelowwiththecomparativeoftheadjectivesfromthebox.bigexpensiveheavylightbigexpensiveheavylightsmallsmall•Salesman:CanIhelpyou,sir?•David:Yes,Ineedasuitcase.Canyoutellmeaboutthesetwo?•Salesman:Sure.Theredonecosts￥2500,andit’smadeofleather.•David:Isee.Theredoneis____________thantheblackone.Whatabouttheweight?Whichoneis___________?moreexpensivelighterbigexpensiveheavylightbigexpensiveheavylightsmallsmall•Salesman:Theblackone.It’smadeofplastic.Trythem,sir.•David:You’reright.Theredoneis_______thanthebalckone,andit’s_______thantheblackone.•Salesman:Doyouhavealotofthingstocarry?•David:Yes,Ido.I’llhavetheblackonebecauseit’s__________thantheredone.•Salesman:Thankyouverymuch,sir.heaviersmallerbiggerBThesuperlativeofBThesuperlativeofadjectivesadjectivesWhenwecomparemorethantwopeopleorthings,wecanusethesuperlativeofadjectives.Weformthesuperlativeofadjectiveslikethis:AdjectivesSuperlativeofadjectiveshighthehighestcarefulthemostcarefulinterestingthemostinteresting•Toformthesuperlativeofadjectives,weoftenadd_____toshortadjectivesanduse______withlongadjectives.•Weusuallyuse________infrontofthesuperlativeofadjectives.Workouttherule-estmosttheBThesuperlativeofBThesuperlativeofadjectivesadjectivesB1Davidisshoppingforacamera.Lookatthephotosandwritetheletterofthecorrectmodelaftereachstatement.￥3589Madein2010350g109mm×78mm×46mm￥2530Madein2012170g99.8mm×56.4mm×24.5mm￥1700Madein2011183g103mm×57mm×27.3mma.c.b.￥3589Madein2010350g109mm×78mm×46mm￥2530Madein2012170g99.8mm×56.4mm×24.5mm￥1700Madein2011183g103mm×57mm×27.3mma.c.b.•David:I’dliketoseesomeofyourcameras.•Salesman:Certainly.Thisisthemostexpensivemodel.______Thisisthecheapestmodel.______Thisisthenewestandlightestmodel.______BThesuperlativeofBThesuperlativeofadjectivesadjectivesB2DavidtoldhisfriendTonyabouthisshoppingtrip.CompleteDavid’ssentenceswiththesuperlatieoftheadjectivesfromthebox.expensivelightoldexpensivelightoldsmallsmall•Tony:Didtheyshowyouanycameras?•David:Yes.The_______modelis____________________.The____________modelcosts____________.The_______modelwasmadein___________.The_______modelweighs_______________.smallest99.8mm×56.4mm×24.5mmmostexpensive￥3589oldest2010lightest170gSummary原形比较级最高级talltallertallestnicenicernicestbigbiggerbiggesteasyeasiereasiestclevercleverercleverest规则变化（一）规则变化（一）单音节词和少数双音节词尾加er/est变为比较级/最高级Summary原形比较级最高级interestingmoreinterestingmostinterestingcarefulmorecarefulmostcarefulslowlymoreslowlymostslowly规则变化（二）规则变化（二）多音节词和一些双音节在词前加more/most变为比较级/最高级Summary不规则变化不规则变化原形比较级最高级good/wellbetterbestbad/badly/illworseworstmany/muchmoremostlittlelessleastold年长的，老的，旧的olderoldestold（亲戚关系中）年长的eldereldestfa...