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1形容词和副词的比较级和最高级讲解与练习一、变化规则①一般的比较级和最高级在形容词或副词后加-er或-est，如：small---smaller---smallest②以不发音-e结尾的形容词或副词直接加–r或–st，如:large---largest---largest③重读闭音节词尾是一个辅音字母的，需双写该辅音字母，再加-er或-est。如：big---bigger---biggest④以辅音字母加y结尾的形容词和副词，把“y”变“i”，再加–er或-est.如：busy---busier---busiesthappy---happier---happiest⑤一些双音节及多音节形容词或副词前要加more和most，如：slowly---moreslowly---mostslowlybeautiful---morebeautiful---mostbeautiful还有一些不规则的变化：二、形容词和副词的等比句型①as+原级+as…和……一样原级比较级最高级goo/wellbetterbestmany/muchmoremostbad/badly（坏地）worseworstlittlelessleastoldolder（年龄）/elder(辈份)oldest/eldestfarfarther距离/further（程度）farthest/furthest2I’mastallasyou.②notas(so)+原级+as不和……一样（在否定句中常用so来代替as）如：Ican’trunsofastasyou.另外as…aspossible为固定结构“尽可能的”如：assoonaspossible,asquicklyaspossible“尽快”等。在以上两个句型中形容词或副词一定要用原级。练习：我的房间不如你的干净。______________________________你必须跟他一样认真。________________________________▲as…as前还可以加倍数,如:Theroomistwotimesaslargeasthatone.三、比较级（两者之间）(1)两者相比:Whichis+比较级,AorB?如:Whichisbigger,thesunorthemoon?(2)比较级+than.如:MikeistallerthanJohn.(3)有ofthetwo”,用the+比较级.如:Lucyisthemorecarefulofthetwo.(4)比较级前可用much/alot/far/alittle/abit/even等修饰.如:Thisbookismuchmoreinterestingthanthatone.TheblouseIboughtyesterdayisalittlelessexpensive.3Toplaybasketballisfarmoreenjoyabletotheboy.(5)比较级+and+比较级,表“越来越……”Itbecomeswarmerandwarmer.(6)“the+比较级，the+比较级”,表“越……，越……”Thehigheryoustand,thefartheryouwillsee.练习：1.你吃的越多,就会越胖._______________________2.Mikelooks_____thanPaul,buttheyareofthesameage.A.youngestB.theyoungestC.youngerD.veryyounger四、最高级(三者或三者以上)1)三者或三者以上相比较用“the＋最高级＋名词＋范围（of/all+---）”。例如：Thisisthecleanestplaceofthecity.HuYunisthefastestofallthegirlsinourclass.胡云是我们女生中跑得最快的。2）表示“最……之一”，用“oneofthe+形容词最高级＋复数名词”。例如：TheGreatWallofChinaisoneofthegreatestbuildingsintheworld.中国的长城是世界上最伟大的建筑之一。ThisisoneofthemostinterestingbooksthatI'veeverread.这是我读过的最有趣的书之一。4注意：形容词的最高级前面必须加定冠词the，但当形容词最高级前面有物主代词修饰时，则不加the。副词前面的the可以省略。例如：（正）Thisismybestfriend.（误）Thisismythe(themy)bestfriend.（正）Todayisthehappiestdayofmylife.（误）Todayishappiestdayofmylife.练习：Sheisthetallestinhisclass.=Sheis______(tall)thananyotherstudentinhisclass.课堂练习1.Whichlessonis__________(difficult)inBook2?2.Alicewrites_____________(carefully)thanI.3.Thisstoryis____________(interesting)thanthatone.4.Thatwasoneof_________(exciting)momentsin2008.5.Thiskindoffoodmustbe________(delicious)thanthatone.单选1．TheYellowRiverisoneof___inChina.A.thelongestriversB.thelongerriverC.thelongestriverD.thelongriver2.DoeshespeakChinese___hisbrother?A.asbetterasB.asgoodasC.aswellasD.bestthan3.Whichshirtdoyoulike___,thewhiteoneortheblueone?A.betterB.goodC.bestD.much54.Thispicturebookisnot___thatone.A.sointerestingasB.sointerestingthanC.asinterestingthanD.interestingas5.Thisarticleis___thanthatone.A.mucheasierB.moreeasierC.muchmoreeasierD.moreeasy6.TheChangjiangRiveris___riverinChina.A.longB.longestC.thelongestD.longer一、写出以下各形容词的比较级和最高级：1.nice_________2.fat_____________3.slow___________4.dry__________5.happy___________6.wet____________7.much__________8.ill______________9.little___________10.bad_________11.thin____________12.far____________13.early_________14.careful__________15.busy____________二、根据句意，用所括号内所级形容词的比较等级形式填空：1.Bobis_________(young)thanFredbut___________(tall)thanFred.2.Yingtianisnotas___________(tall)asYongxian.3.Almostallthestudents'facesarethesamebutLiDeminglooks_______(fat)thanbefore.4.Whichis_________(heavy),ahenorachicken?5.--How_________(tall)isSally?--She's1.55metres________(tall).WhataboutXiaoling?6--She'sonly1.40metres________(tall).Sheismuch_______(short)thanSally.Sheisalsothe_______(short)girlintheclass.6.Heis______(bad)atlearningmaths.Heismuch_______(bad)atChineseandheisthe_________(bad)atEnglish.7.AnniesaysSallyisthe________(kind)personintheworld.8.Heisoneofthe__________(friendly)peopleintheclass,Ithink.9.Adictionaryismuch________(expensive)thanastory-book.10.Anorangeiaalittle______(big)thananapple,butmuch________(small)thanawatermelon.11.TheChangjiangRiveristhe_______(long)riverinChina.12.Sueisalittle__________(beautiful)thanhersister.13.Myroomisnotas_________(big)asmybrother's.14.--Howdifficultisphysics?--I'mnotsure.--Isit________(difficult)thanmaths?--Idon'tthinkso.15.--Annieplaysthepianovery___________(well).--Sueplaysit_____(well)thanAnnie.AndSallyplaysitthe_______(well).16.Saturdayismy_________(busy)dayinaweek.17.Hermotherisgetting____________(fat)and________(fat).18.Ithinkit'stooexpensive.I'dlikea_____________(cheap)one.19.Hecomestoschoolmuch____________(early)thanI.20.Thisbookisnotas_____________(interesting)asthatone.7三、单选1.Thisboxis___thatone.A.heavythanB.soheavythanC.heavierasD.asheavyas2.Whenwespeaktopeople,weshouldbe___.A.aspoliteaspossibleB.aspoliteaspossiblyC.aspolitelyaspossibleD.aspolitelyaspossibly3.Thisbookis____thatone,but____thanthatone.A.asdifficultas;expensiveB.asmoredifficultas;moreexpensiveC.asdifficultas;moreexpensiveD.moredifficultas;asexpensive4.Ithinkthestoryisnotso___asthatone.A.interestingB.interestedC.moreinterestingD.mostinteresting5.Hisfatherbegantowork____hewassevenyearsold.A.asoldasB.asearlyasC.sinceD.while