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1关于形容词和副词的比较级与最高级一、形容词与副词比较级的构成规则。1.规则变化：⑴其中要双写:大（big)、红(red)、湿(wet)、热(hot)、悲(sad)、胖(fat)、瘦(thin)、健康的（fit）2.⑵注意：slowly→moreslowly→mostslowlyfriendly→friendlier/morefriendly→friendliest/mostfriendlyclever→cleverer/moreclever→cleverest/mostclever3.不规则变化：（常考词）much/many-___more___-___most____little-___less___-___least_____good/well-better-__best_____bad/badly/ill-_worse_____-__worst____far-__farther_____-___farthest_______(远)old-___older____-___oldest_____（老）-__further_____-___furthest_______(深入）-___elder____-___eldest_____（年长）二、比较级的用法。考点1、修饰比较级的词：alot,much,far…得多alittle,abit…一点儿even甚至still仍然如：①I'malittle____taller________(tall)thanhim.我比他高一点。②Thatmustbealot___more__interesting_____(interesting)thantakingabus.2.ofthetwo比较级前要加the用the+比较级+ofthetwo(thetwins/parents)特指两者中较（高/矮……）的一个。①Tinais_____thetaller_______(tall)ofthetwins.②Mikeis___thesmarter_________(smart)ofthetwoboys.3.比较级+and+比较级表示“越来越…”单音节词：betterandbetter越来越好多音节词：moreandmorebeautiful①Heisgetting_____taller______and_____taller______(tall).他变得越来越高了。②Thefilmis______more_____and________more__________(interesting).这部电影越来越有趣了。4.the+比较级，the+比较级表示“越…，越…”如Themore,thebetter.越多越好。The____more__careful___________(careful)youare,the____fewer___________(few)mistakesyoumake.5.any(范围外)/anyother(范围内)①Shanghaiisbiggerthan___any_other________cityinChina.上海比中国的任何一个城市都要大。②Shanghaiisbiggerthan____any_____cityinJapanese.上海比日本的任何一个城市都要大。6.两者相比比较的对象要一致。①Mywatchis__more__expensive_________(expensive)than____yours____(you).我的手表比你的贵。②Ihave_____fewer_______(few)storybooksthan______youdo____(you).我的故事书比你的少。三、最高级的用法。1.of/in三者或三者以上的人或物进行比较时，用最高级，形容词的最高级前面要加the，后面用of/in.of+同类人/物in+表地点的范围副词的最高级前面可用the，也可省略。2.orwhich/who引导的选择疑问句有三者相比，也可用最高级。①Whichis___thebiggest_____________(big),thesun,theearthorthemoon?太阳、地球、月亮，哪个最大？②Whois____thetallest_____________(tall),Tom,MikeorJohn?3.oneofthelongestrivers最长的河流之一句式：oneof+the+形容词的最高级+名词复数，表示“……中最……之一”如：Xi'anisoneof_____theoldestcity_________inChina.西安是中国最古老的城市之一。24.thesecondlongestriver第二长的河句式：the+序数词+形容词的最高级+名词，表示“第几……的”如：TheYellowRiveristhesecond___longest___________(long)riverinChina.5.mybestfriend我最好的朋友1.原级与比较级的转换①Thisroomisfivetimesasbigasthatone.=Thisroomisfourtimesbiggerthanthatone.②Englishisn'tsoeasyasmath.=Englishis____more________difficult________thanmath.2.比较级与最高级的转换句式：①比较级+than+anyother+单数名词比较级+than+theother+复数名词比较级+than+theothers②Nobodyelse+比较级+thanPeteristhetalleststudentinourclass.=Peteristallerthan___any________other_______student______inourclass.=Peteristallerthan____the________other_______students______inourclass.=Peteristallerthan___the_________others____inourclass.=____Nobody____________else________istallerthanPeterinourclass.熟记短语：lessthanthreedays不到三天morethanthreedays=overthreedays超过三天