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形容词比较级（一）英语形容词、副词比较级的构成英语形容词比较等级有三个：原级，比较级和最高级。形容词比较等级形式变化有规则的和不规则的两种。1、规则变化1）单音节词末尾加-er（比较级），-est（最高级）【例】原级比较级最高级greatgreatergreatestsmallsmallersmallestcleancleanercleanest2）单音节如以e结尾，只加-r（比较级），-st（最高级）【例】widewiderwidest3）闭音节单音节词如末尾只有一个辅音字母，须先双写这个辅音字母，再加-er（比较级），-est（最高级）【例】bigbiggerbiggesthothotterhottestredredderreddest4）少数以-y，-er，ow，-ble结尾的双音节词，末尾加-er（比较级），-est（最高级）。以-y结尾的词，如-y前是辅音字母，则变y为-i，再加-er和-est。以-e结尾的词只加-r和-st。【例】clevercleverercleverestnarrownarrowernarrowestableablerablest（不常用）easyeasiereasiest5）其它双音节和多音节词皆在前面加单词more和most。【例】carefulmorecarefulmostcarefuldifficultmoredifficultmostdifficultdeliciousmoredeliciousmostdelicious2、不规则变化原级比较级最高级good/wellbetterbestbadworseworstmany/muchmoremostlittlelessleastfarfarther/furtherfarthest/furthest（距离）（程度）注：有些形容词一般没有比较等级。如：right,wrong,woolen等。（二）形容词/副词的比较级的用法：1、原级（同级）比较：as…as…;notas(so)…as…We’llgiveyouasmuchhelpaswecan.Sheisn’tas(so)activeinsportsasbefore.2、可修饰比较级的词：much,alittle,even,far,alot,ratherHemadefewermistakesthanIdid.HeisevenricherthanI.3、不含“than”，但蕴含着比较意义。Whichislager,CanadaorAustralia?Johnisthecleverofthetwoboys.ThisT-shirtistoobigforme,couldyougivemeasmallerone?4、too…to…太…以至于…(1)too…to与so…thatsb.can’t…的句型转换：前者为简单句，主语只有一个，而后者为复合句，主语有两个，试比较：Themanwastooangrytobeabletospeak.=Themanwassoangrythathewasn’tabletospeak.Themilkwastoohottodrink.=Themilkwassohotthatwecan’tdrinkit.(2)too…to…与notenoughto句型的转换：Heistooyoungtogetmarried.=Heisnotoldenoughtogetmarried.Thebookistoodifficultformetoread.=Thebookisnoteasyenoughformetoread.5、用比较级表示倍数关系：(1)Ais…timesthesize/height/length/width(名词)ofBThenewbuildingisthreetimestheheightoftheoldone.(2)Ais…timesasbig/high/long/wide/large(形容词原级)asB（用法类似于1）AsiaisfourtimesaslargeasEurope.(3)Ais…timeslarger/higher/longer/wider(形容词比较级)thanB.Ourschoolistwicebiggerthanyours.6、用比较级表示最高级：形容词或副词比较级+than+alltheother+名词复数/anyother+名词单数。如：约翰是班里最高的男生。Johnisthetallestboyintheclass.Johnistallerthanalltheotherboys/anyotherboyintheclass.7、themore…..themore….表示“越……越……”:Themorebooksyouread,thewideryourknowledgeis.Themorefoodyoueat,thefatteryouare.8、moreandmore….表示“越来……越……”:Moreandmorestudentsrealizedtheimportanceofaforeignlanguage.Ourcountryisgettingstrongerandstronger.（三）形容词、副词最高级的用法1、形容词最高级前必须加the,副词最高级前常省略the，后面多用of……，in……短语表示范围：Itwasthemost/leastinterestingstoryIhaveeverlistened.Herunsfastestinhisclass2、序数词通常用来修饰最高级。如：TheYellowRiveristhesecondlongestriverinChina.3、oneof+the+最高级+复数名词，表示“最…….之一”。如：Mr.Wangisoneofthebestteachersinourschool.比较级和最高级练习题1.Thisboxis___thatone.A.heavythanB.soheavythanC.heavierasD.asheavyas2Whenwespeaktopeople,weshouldbe'.A.aspoliteaspossibleB.aspoliteaspossiblyC.aspolitelyaspossibleD.aspolitelyaspossibly3Thisbookis____thatone,but____thanthatone.A.asdifficultas;expensiveB.asmoredifficultas;moreexpensiveC.asdifficultas;moreexpensiveD.moredifficultas;asexpensive4Ithinkthestoryisnotso___asthatone.A.interestingB.interestedC.moreinterestingD.mostinteresting5Hisfatherbegantowork____hewassevenyearsold.A.asoldasB.asearlyasC.sinceD.while6.Ithinkscienceis_thanJapanese.A.muchimportantB.importantC.muchmoreimportantD.moremuchimportant7.Thispencilis___thanthatone.A.longestB.longC.longerD.aslong8.Mymotherisno___young.A.shorterB.longerC.littleD.few9.Thesechildrenare____thisyearthantheywerelastyear.A.moretallB.moretallerC.verytallerD.muchtaller10.Itwasveryhotyesterday,butitis___today.A.evenhotterB.morehotterC.muchmorehotD.muchhot11.MrsBlackhasgot____insteadofgettinganybetter.A.morebadB.alittleworseC.muchbadlyD.alotofworse12.Whenwearrived,wefoundthemeetingroomcrowdedwith___students.A.quiteafewB.onlyafewC.fewD.afewquite13.Thehouseissmallforafamilyofsix.A.muchtooB.toomuchC.verymuchD.so14.Throughthewindowwecanseenothingbut____buildings.A.tallverymanyB.verymanytallC.verytallmanyD.manyverytall15.-What'syourbrotherlike?-Heis___.A.adriverB.verytallC.myfriendD.atschool16.Thejacketwasso___thathedecidedtobuyit.,A.muchB.littleC.expensiveD.cheap17.Ourclassroomis____largerthantheirs.A.moreB.quiteC.veryD.much18.Theearthisabout____asthemoon.A.asfiftytimebigB.fiftytimesasbigC.asbigfiftytimesD.fiftyastimesbig19.Yourroomismine.A.twiceaslargethanB.twicethesizeofC.biggertwicethanD.astwicelargeas20.Yourroomis___thanmine.A.threetimebigB.threetimesbigC.threetimesbiggerD.biggerthreetimes21.Hisfatheris____thanhismother.;A.olderfouryearsB.asfouryearsolderC.fouryearsolderD.biggerfouryears22.Mathsismorepopularthan____.A.anyothersubjectB.allthesubjectsC.anysubjectD.othersubject23.Chinaislargerthan____inAfricaA.anyothercountryB.othercountriesC.theothercountryD.anycountry24.Tomisstrongerthan___inhisclass.A.anyotherboyB.anyboysC.anyboyD.otherboy25.Whenspringcomes,itgets____.A.warmandwarmB.colderandcolderC.warmerandwarmerD.shorterandshorter26.Byandby,____studentsinourclasscametolikeEnglish.A.moreandmoreB.muchandmuchC.manyandmanyD.lessandleast27.Atlasthebegantocry___.A.hardandhardB.morehardandmorehardC.harderandharderD.lesshardandlessharder28.Whenspringcomesthedaysget____andnights____.A.short;longB.long;shortC.longer;shorterD.shorter;longer29.___Ilookatthepicture,____Il