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中考英语比较级最高级讲解1.单音节词和少数双音节词，加词尾-er，-est来构成比较级和最高级构成法原级比较级最高级①一般单音节词未尾加-er,-esttall(高的)great(巨大的)tallergreatertallestgreatest②以不发音的e结尾的单音节词和少数以-le结尾的双音节词只加-r,-stnice(好的)large(大的)able(有能力的)nicerlargerablernicestlargestablest③以一个辅音字母结尾的闭音节词，双写结尾的辅音字母，再加-er,-estbig(大的)hot(热的)biggerhotterbiggesthottest④以辅音字母+y结尾的双音节词，改y为i，再加-er，-esteasy(容易的)busy(忙的)easierbusiereasiestbusiest⑤少数以-er,-ow结尾的双音节词未尾加-er,-estclever(聪明的)narrow(窄的)cleverernarrowercleverestnarrowest⑥其他双音节词和多音节词，在前面加more,most来构成比较级和最高级。important(重要的)easily(容易地)moreimportantmoreeasilymostimportantmosteasily2.不规则变化原级比较级最高级good(好的)/well(健康的)betterbestbad(坏的)/ill(有病的)worseworstold(老的)older/elderoldest/eldestmuch/many(多的)moremostlittle(少的)lessleastfar(远的)farther/furtherfarthest/furthest注意：（1）old有两种比较级和最高级形式：older/oldest和elder/eldest。elder/eldest只多用于兄弟姐妹的长幼关系。Myelderbrotherisanengineer.Maryistheeldestofthethreesisters.（2）far有两种比较级farther和further。在英语中两者都可指距离。在美语中，farther表示距离，further表示进一步。Ihavenothingfurthertosay.3．几个常用的基本句型：as+形容词或副词原级+as形容词或副词比较级+thanthe+最高级+比较范围▲as+形容词或副词原级+as（1）在否定句或疑问句中可用so…as。Hecannotrunso/asfastasyou.（2）当as…as中间有名词时采用以下格式：as+adj.+a/an+n.或as+many/much+n.Thisisasgoodanexampleastheotheris.Icancarryasmuchpaperasyoucan..（3）用表示倍数的词或其他程度副词做修饰语时，放在as的前面。Thisroomistwiceasbigasthatone.Yourroomisthesamesizeasmine.（4）倍数+as+adj.+as=倍数+the+n.+ofThisbridgeisthreetimesaslongasthatone.=Thisbridgeisthreetimesthelengthofthatone.Yourroomistwiceaslargeasmine.=Yourroomistwicethesizeofmine.▲形容词或副词比较级+thaneg:YouaretallerthanI.Thelightsinyourroomarebrighterthanthoseinmine.注意：（1）要避免重复使用比较级。(错)Heismoreclevererthanhisbrother.(对)Heismorecleverthanhisbrother.(对)Heisclevererthanhisbrother.（2）要避免将主语含在比较对象中。(错)ChinaislargerthatanycountryinAsia.(对)ChinaislargerthananyothercountryinAsia.（3）要注意对应句型，遵循前后一致的原则。ThepopulationofShanghaiislargerthanthatofBeijing.Itiseasiertomakeaplanthantocarryitout.（4）要注意冠词的使用，后有名词的时候，前面才有可能有冠词。比较：Whichislarge,CanadaorAustralia?Whichisthelargercountry,CanadaorAustralia?Sheistallerthanhertwosisters.Sheisthetallerofthetwosisters.※可修饰比较级的词（1）abit,alittle,rather,much,far,byfar,many,alot,lots,agreatdeal,any,still,even等。（2）还可以用表示倍数的词或度量名词作修饰语。（3）以上词(除byfar)外，必须置于比较级形容词或副词的前面。▲the+最高级+比较范围（1）TheSaharaisthebiggestdesertintheworld.※形容词最高级前通常必须用定冠词the，副词最高级前可不用。形容词most前面没有the，不表示最高级的含义，只表示“非常”Itisamostimportantproblem.=Itisaveryimportantproblem.注意：使用最高级要注意将主语包括在比较范围内。(错)Tomisthetallestofhisthreebrothers.(对)Tomisthetallestofthethreebrothers.（2）下列词可修饰最高级：byfar,far,much,mostly,almostThishatisnearly/almostthebiggest.①very可修饰最高级，但位置与much不同。Thisistheverybest.Thisismuchthebest.②序数词通常只修饰最高级。Africaisthesecondlargestcontinent.（3）句型转换：Mikeisthemostintelligentinhisclass.Mikeismoreintelligentthananyotherstudentsinhisclass.（4）“否定词语+比较级”与“否定词语+so…as”结构表示最高级含义Nothingissoeasyasthis.=Nothingiseasierthanthis.=Thisistheeasiestthing.▲和比较级（more等）有关的词组（1）the+比较级…,the+比较级…越……就越……Theharderyouwork,thegreaterprogressyou'llmake.（2）moreBthanA与其说A不如说B(=lessAthanB)Heismorelazythanslowathiswork.=Heislessslowthanlazyathiswork.与其说他做事慢，不如说他懒。（3）nomorethan…与……一样……，不比……多noless…than…与……一样……TheofficialscouldseenomorethantheEmperor.=TheofficialscouldseeaslittleastheEmperor.官员们所见并不比皇帝多。(指都少)Heisnolessdiligentthanyou.=Heisasdiligentasyou.他和你一样勤奋。（4）morethan不只是，非常Sheismorethankindtousall.1.（2009，四川资阳）.Sydneyisoneof______citiesintheworld.A.beautifulB.morebeautifulC.mostbeautifulD.themostbeautiful2.（2009，达州）——Kevin,isyourtwinbrotherthesameasyou?——No,I’m______thanhim.A.alittlethinB.verythinnerC.muchthinerD.alittlethinner3.(2009,南充）Theseatsinthemiddleofthecinemaare______ofall.A.betterB.goodC.thebest4.(2010,南充）Ihavechangedalotinthelastfewyears.NowI’m______thanbeforeandI’mmoreoutgoing.A.muchtallB.muchtallerC.moretaller5.(2011.南充）Chinaisoneof______countriesintheworld.A.largerB.largestC.thelargest6.(2009.南充）—Dick,isDickyourtwinbrother?—Yes,andI’m1cm_____thanhim.A.moretallB.tallerC.moretaller7.(2010.重庆）We’rehappythatourcountryhasdeveloped__theseyearsthanbefore.A.quicklyB.lessquicklyC.morequicklyD.mostquickly8.(2010.眉山）——Ithinkfolkmusicislesspopularthanclassicalmusic.—Idon’tagreewithyou.Classicalmusicis______folkmusic.A.aspopularasB.sopopularasC.morepopularthan9.(2011,内江）——Whatahotday!—Theweatherreportsaysitwillbemuch______tomorrow.A.hotB.hotterC.hottest10.(2011,眉山）—Whichcolordoyoulike___,yellow,greenorblack?—Green.A.goodB.WellC.betterD.best11.(2011,凉山）——Whatacarefulboyyouare!—Thankyou.Infact,Tomdoeseverything______thanme.A.morecarefullyB.morecarefulC.muchcareful12.(2011,德阳）——DoyouknowwhathashappenedinJapanrecently?—Theearthquake!It’s______onethatIhaveeverheardof.A.averyseriousB.amoreseriousC.themostserious13.(2011,德阳）Mysisterhaspracticedtennisforalongtime.Sheplaystennis______you.A.asgoodasB.sowellasC.aswellas14.(2011,成都）——______scientificattitudeisneededindevelopingourcity.——Iagreewithyou.Inthisway,wecanmake______mistakes.A.Fewer;lessB.Less;moreC.Morefewer