1、形容词和副词的比较级和最高级的变化规则一 形容词、副词的比较级和最高级的构成规则：1 一般情况 加-er, -est talltallertallest greatgreatergreatest2 以不发音 e 结尾的单音节词 加-r， -st largelargerlargest nicenicernicest3 在重读闭音节（即：辅音元音辅音）中， 先双写末尾的辅音字母 再加-er, -estbigbiggerbiggest hothotterhottest4 以“辅音字母y”结尾的双音节词， 把 y 改为 i再加-er, -esteasyeasiereasiest heavyheavie
2、rheaviest 5 以 ow,er 结尾的双音节词 加-er, -est clevercleverercleverestnarrownarrowernarrowest 6 其他双音节词（副词）和多音节词，比较级在前面加more，最高级在前面加 mostbeautifulmore beautifulmost beautifuldifferentmore differentmost different easilymore easilymost easilyfriendlymore friendly; commonmore common; helpfulmore helpful，more ca
3、reful, more nervous, more relaxed, more normal，modern- more modernunhappymore unhappy, lucky-luckierunluckymore unlucky注：最高级前要加 the ,不加表示 “非常” ，a most important meeting 副词的比较级和最高级 1大多数以 ly 结尾的副词前加 more 和 most 来构成比较级和最高级。2少数单音节副词，加 er,est 构成其比较级和最高级 。几个特殊的形容词和副词原级 比较级 最高级good ,well better bestbad, il
4、l, badly worse worstmany ,much more mostlittle less leastfar Farther 距离, further 程度 farthest, further(提高进一步 )old Older 时间, elder 顺序 oldest, eldest二、形容词、副词的比较级和最高级的用法名称结构 可放在前修饰词例句1“甲+be+(倍数)+as+形容词原级+as+乙”表示“甲和乙程度相同”或“甲是乙的几倍”Tom is as old as Kate.汤姆和凯特年龄一样大。Tom is twice as old as Kate.汤姆的年龄是凯特的二倍。2“
5、甲+实意动词+(倍数)+as+副词原级+as+乙”表示“甲和乙程度相同”或“甲是乙的几倍”Tom runs as fast as Mike.汤姆和迈克跑得一样快。Tom runs twice as fast as Mike.汤姆跑得速度是迈克的二倍。3“甲+be+not+as/so+形容词原级+as+乙”甲不如乙This room is not as/so big as that one.这个房间不如那个大。一、原级的用法4 甲+助动词+not+动词原形+as/so+副词原级+as+乙”甲不如乙almost, nearly, just, exactly, quite, rather, very
6、, half , twice,three times , a third, so，tooHe doesnt walk as slowly as you.他走路不像你那样慢。名 结构 可放在前 例句称 的修饰词1 甲+be+(倍数)+形容词比较级+than+乙”表示“甲比乙”或“甲比乙几倍”Tom is taller than Kate.汤姆比凯特高。This room is three times bigger than that one.这个房间比那个大三倍。2“甲+实意动词+(倍数)+副词比较级+than+乙”表示“甲比乙”或“甲比乙几倍”I got up earlier than my
7、mother this morning.我今天早晨起床比我妈妈还早。He runs three times faster than his brother.他跑的速度比他弟弟快三倍。3“甲+be+形容词比较级+than+any other+单数名词(+介词短语)”表示“甲比同一范围的任何一个人/物都”，含义是“甲最”。注意：The Yangtze Riveris longer than any river in Japan.长江比日本的任何一条河都长。The Yangtze River is longer than any other river in China. =The Yangtze
8、River is longer than any of the other rivers in China.长江比中国的任何一条其他的河都长。=The Yangtze River is longer than the other rivers in China.长江比中国的其他所有的河都长。=The Yangtze River is the longest river in China.长江是中国最长的河流。 4“甲+实意动词+副词比较级+than+anyother+单数名词(+介词短语)”表示“甲比同一范围的任何一个人/物都”，含义是“甲最”。Mike gets to school earl
9、ier than any other student in his class.= Mike gets to school earlier than any of the other students in his class. 注意：Mike gets to school earlier than any student in Toms class.迈克比汤姆班上任何一个学生到校都早。(迈克和汤姆不是同一个班)5“甲+be+the+形容词比较级+ofthetwo+”表示“甲是两者中较的”Look at the two boys.My brother is the taller of the
10、two. 6“比较级+and+比较级”表示“越来越”。He is getting taller and taller. 7“the+比较级，the+比较级”表示“越，越”。The more careful you are，the fewer mistakes youll make.你越认真，犯的错误越少8“特殊疑问词+be+形容词比较级，甲 or 乙？”Which is bigger，the earth or the moon？ 二、比较级的用法“特殊疑问词+实意动词+副词比较级，甲 or乙？”a lot, much , a bit, even, a little , still, far,
11、Lesson One is much easier than Lesson Two.第一课比第二课容易得多。Tom looks even younger than before.汤姆甚至比以前更年轻。This train runs much faster than that one.这辆火车比那辆跑地快。Who draws better，Jenny or Danny？谁画得比较好，詹妮还是丹尼？1“主语+be+the+形容词最高级+单数名词+in/of 短语”表示“是中最的”。Tom is the tallest in his class./of all the students.汤姆是他们班
12、上/所有学生当中最高的。2“主语+实意动词+(the)+副词最高级+单数名词+in/of 短语”表示“是中最的例如，I jump (the) farthest in my class.我是我们班跳得最远的。3“主语+be+oneofthe+形容词最高级+复数名词+in/of 短语”表示“是中最之一”。 例如，Beijing is one of the largest cities in China.北京是中国最大城市之一。4“特殊疑问词+be+the+最高级+甲，乙，or丙？”用于三者以上的比较。例如，Which country is the largest，China，Brazil or Canada？ 3.最高级常用句型结构5“特殊疑问词+be+the+副词最高级+甲，乙，or 丙？”用于三者以上的比较例如，Which season do you like (the) best，spring，summer or autumn？
