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形容词的比较级专项一、变化规则；1、规则变化：（1）单音节词和少数双音节词一般在词尾加er或est：bright___________;以不发音的e字母结尾的加r,或st：large;以辅音字母加y结尾的变y为I加er或est:easy；以一个辅音字母结尾的重读闭音节词双写最后一个辅音字母再加er或est:big以er，ow结尾的双音节词加er或est:cleverslow（2）多音节词前加more或most,副词最高级前省略the.(3)部分形容词本身表示最高级，因此他们没有比较级和最高级形式：favouriteround2、不规则变化：good,well;bad,badly,ill;much,many;little;far;old;注：只有少数形容词和副词有两种比较级和最高级形式：cleveroldfar二、形容词各等级的用法：1、原级（同级）比较：as…as…;notas(so)…as…We’llgiveyouasmuchhelpaswecan.Sheisn’tas(so)activeinsportsasbefore.2.比较级：表示两者之间比……更……可用状语much,alittle,even等修饰：HemadefewermistakesthanIdid.HeisevenricherthanI.3、高级：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.Heisthetallestofthethree.4、如果在两者之间表示“最……”时要在比较级前加the，而且还用ofthetwo,ofthepair短语：Johnisthecleverofthetwoboys.Ofthetwoboys,Johnistheclever.三、重点与难点：1、as…as…结构：你和汤姆是一样好的孩子。You’reaboyasgoodasTom.=You’reasgoodaboyasTom.2、(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.3、形容词原级表示比较级含义：约翰不象迈克那么苯。JohnisnotsostupidasMike.JohnislessstupidthanMike.JohnisclevererthanMike.4、用比较级表示最高级：约翰是班里最高的男生。Johnistallerthananyotherboyintheclass.Johnisthetallestboyintheclass.Johnistallerthan:anyotherboy.anyoftheotherboy.alltheotherboy.anyoftheothers.anyoneelse.5、themore…..themore….表示“越……越……”:Themorebooksyouread,thewideryourknowledgeis.Themorefoodyoueat,thefatteryouare.6、moreandmore….表示“越来……越……”:Moreandmorestudentsrealizedtheimportanceofaforeignlanguage.Ourcountryisgettingstrongerandstronger.四、巩固练习：（一）写出下列形容词与副词的比较级与最高级形式：long_longer_longest_________wide_wider_widest___________fat_fatter__fattest______heavy_heavier_heaviest________slow_____________few_________brightly______-_____bably____________far_________quickly___________happy_____-______unhappy________(二)用所给词的正确形式填空：1.Ofthetwogirls,IfindLucythe_______(clever).2.Gold(黄金)is______(little)usefulthaniron(铁).3.Mysisteristwoyears_______(old)thanI.4.John’sparentshavefourdaughters,andsheisthe_____(young)child.5.The_____(cheap)bagsarethenotusuallythebestones.6.Theshortoneisbyfar_______expensiveofthefive.7.Theboyisnotso______(interesting)ashisbrother.8.Dicksings_____(well),shesings______(well)thanJohn,butMarysings______(well)inherclass.9.Shewillbemuch______(happy)inhermewhouse.10.Thisdressis______that.(twice,as…as…,expensive)(三)选择填空：1．Hefeels_____todaythanyesterday.A.tiredB.moretiredC.moretirederD.muchtired2.Whichdoyoulike_____,coffee,teaormilk?A.theworstB.worseC.theworseD.worst3.Ofthetwotoys,thechildchose_____.A.theexpensiveoneB.onemostexpensiveC.aleastexpensiveD.themostexpensiveofthem4.Thelineis____thanthatone.A.morelongerB.notlongerC.muchmorelongerD.manymorelonger5.Theearthis_____themoon.A.as49timesbigasB.49timesasbiggerasC.49timesasbigasD.asbigas49times6.Thebookis____ofthetwo.A.thinnerB.thethinnerC.morethinnerD.thethinnest7.Shelooks_____thanshedoes.A.themoreolderB.veryolderC.mucholderD.moreolder8.Thegardenisbecoming______.A.morebeautifulandmoreB.morebeautifulandbeautifulC.moreandmorebeautifulD.morebeautifulandbeautifuler9.Theycompeted（比赛）toseewhocouldwork_____.A.thefastestandbestB.thefasterandthebetterC.fastestandbetterD.fasterandbetter10.______hurry,_______speed.A.More,lessB.Much,littleC.Themore,thelessD.Themuch,thelittle11.Thiskindofcoffeeisdifferent______.A.anditisalsobetterB.andbetterthantheotherC.butalsothanothersD.fromtheother,andbetter(四)翻译句子：1．本书跟那本书一样有趣。Thisbookis_______________thatone.2．你游泳没有你弟弟好。Youcan’tswim_______________yourbrother.3．今天比昨天冷的多。Itis___________today______itwasyesterday.4．对这个故事我比另一个喜欢的多。9.他吃的越多，人越胖。Themoreheeats,the_______hegets.10.你的问题四两个中比较难的那个。Yourquestionis___________________oftwo.1.MrSmiththoughtthelenturyParkwasthesecond_____(large)inShanghai.2.Whichis____(easy)tolearn,fishingorswiThisstoryis_________________thanthatone.5．他比我大两岁。Heis_________________thanI.6．这个故事不如那个有趣。Thisstoryis_______________thanthatone.7．她的身体状况一天天好起来。Heisgetting_________________everyday.8.他对英语越来越感兴趣。Heisbecoming_____________________________English.mming?3.Shanghaiislargerthan____uityinsichuan.4.InChangchun,theJingYueForestParkismuch____(clean)thanthatinthecenterofthecity.5.Itmakes____(little)timetogotoBeijingbyplanethanbytrain6.Mum,thisT-shirtismuchtoosmallforme.Wouldyoubuymea____(large)one?7.Xi'anisoneof____(old)capitallifesinChina.8.____(few)childrenthereareinafamily,____(good)theirlifewillbe.9.Itwillbebadforyourhealthtoeat____(much)foodandtake____(little)exercise.10.NowChinahasjionedWTO,soIthinkEnglishis____(useful)thanbefore.11.Ofallhissubjects,Tomis____(good)atEnglish.12.-Whois____(interested)inChineseinyourclassatthemoment?13.BookIIis____(different)thanBookIV.14.TheGreatWallofChinaisoneof____(great)wondersintheworld15.Sheisbecoming____(beautiful)thanbefore.16.TheweatherinFujianisbetterthan____inWuhan.17.ThetextsinBookIIaremucheasierthan____