形容词和副词的三级
1．形容词和副词的比较级和最高级的规则变化
(1)一般在词尾直接加-er或-est。如：
tall — taller — tallest, long —longer — longest
(2)以不发音的字母e结尾的单词在词尾直接加-r或-st。如：
nice — nicer — nicest, large —lagrer— largest
(3)以辅音字母＋y结尾的词，把y变为i，再加 er或 est。如：
heavy — heavier — heaviest, busy — busier — busiest, funny — funnier — funniest
(4)在重读闭音节中，末尾只有一个辅音字母，双写这个辅音字母，再加-er或-est。如：
big — bigger — biggest, hot — hotter — hottest, thin —thinner—thinnest， fat — fatter —当兵的歌 fattest
(5)部分双音节词和多音节词分别在原级前加more构成比较级，加most构成最高级。如：
slowly — more slowly— most slowly,
beautiful —二次元萝莉图片 more beautiful — most beautiful
important — more important — most important
2．形容词和副词的不规则变化
good/well — better — best many/much — more — most
ill/bad/badly — wor — worst little —less—least far — farther/further — farthest/furthest
3．三级的用法
(1)原级的用法
① 只能修饰原级的词有very, quite, so, too等。如：
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咏柳图片The old man is __________ walk on. 那个老人太累了以至于不能再继续走了。
② 原级常用的句型结构
a．“A＋v.＋as＋形容词原级/副词原级＋as B”表示“A和B程度相同”。如：
Lucy is as old as Kate. 露西和凯特的年龄一样大。
Tom runs __________ Mike. 汤姆和迈克跑得一样快。
b．“ A＋v.＋not＋as/so＋形容词原级/副词原级＋as B” 表示“A不如B……”如：
This classroom is ________________ that one. 这个教室不如那个大。
He doesn't walk as slowly as you. 他走路不像你那样慢。
(2)比较级的用法
①可用much, even, a little等词修饰形容词、副词的比较级。如：
(1) Now I feel even more tired this morning than I usually do.
(2) If you do that, you’ll soon feel much healthier.
(3) Kate felt a little better.
②比较级常用的句型结构
1）“A＋v.(＋倍数)＋比较级＋than＋B”表示“A比B……”或“A比B……几倍”如：
Jim is taller than Kate. 吉姆比凯特高。
This ball is _________________________________ that one. 这个球比那个大三倍。
2）“A＋v.＋比较级＋than＋any other＋单数名词(＋介词短语)苞芦松”表示“A比同一范围内的任何一个人/物都……”，含义是“A最……”。如：Xiaoming is taller than ____________ in his class. 小明比他班上其他任何男孩都高。
＝Xiaoming is taller than(any of)the other boys in his class.
＝Xiaoming is the tallest boy in his class.小明是他班上最高的男孩。
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3）“A＋v.＋the＋比较级＋of the two＋……”表示“A是两者中较……的”。 如：
Look at the two boys. Xiaoming is __________ the two. 看那两个男孩，小明是两个当中较高的那个。
4）“比较级＋and＋比较级”表示“越来越……”如：
He is getting ____________________．他越来越高了。
He does his homework more and more carefully. 他做作业越来越认真了。
5）“the＋比较级，the＋比较级”表示“越……，就越……”如：
The more, the better. 越多越好。
____________ you work，__________ your grades will be. 你越努力学习，你的成绩就越好。
6）“特殊疑问词＋v.＋比较级，A or B？”如：
Which is bigger, the blue ball or the red one? 哪一个大，蓝球还是红球？
[注意] 比较级前常用much, even, still, a little, a bit, a lot, far, any等词修饰。
(3)最高级常用句型结构
①“主语＋v.＋the＋最高级＋(珍珠丸单数名词)＋自贡旅游in/of短语”，表示“……是……中最……的”。 如：
Tom is the tallest (student) in his class.
＝Tom is the tallest of all the students.
汤姆是他们班上/所有学生当中最高的。
I jump ____________ in my class. 我是我们班跳得最远的。
②“主语＋v.＋one of the＋最高级＋复数名词＋in/of短语”，表示“……是……中最……之一”。 如：
Beijing is ______________________________ in China. 北京是中国最大的城市之一。
③“特殊疑问词＋v.＋the＋最高级＋A，B，or C？”用于三者以上的比较。如：
Which ason do you like _____________， spring, summer or autumn？ 你最喜欢哪一个季节，春天，夏天还是秋天？
④“主语＋v.＋the＋序数词＋最高级”，表示“……是……中的第几……”如：
Tom is____________________________boy in his class. 汤姆是他们班身高第二的男生。
（4）比较级与最高级的转换
比较级、最高级和同等比较（as…as, not as/so…as）句式的相互转换。例：
(1) Li Lei ran much faster than the other boys. 可转换成：
Li Lei ran fastest of all the boys.
The other boys didn’t run as fast as Li Lei.
Li Lei ran much faster than any other boy.
Li Lei ran much faster than any of the other boys.
(2) Liu Mei jumped farthest of all the students. 可转换成：
Liu Mei jumped farther than the other students.
Liu Mei jumped farther than the other students.
Liu Mei jumped farther any the student.
No student jumped as far as Liu Mei.
例题解析
1. He is ________ friends than I.
A. much more B. many more C. very more D. too more
解析： 后面有可数名词复数时， many的比较级形式为many more 修饰。 应选B.
2. Which is the _________ country, Japan or Australia?
A. more developed B. more developing C. most developed D. most developing
解析： 两者比较用比较级， 表示"发达"用 developed, 而developing 是 "发展中的" 意思
3． There were _______ shops in the city in 1982 than in 1990.
A. little B. few C. fewer D. less
解析：little 不能修饰可数名词，两者比较需用比较级， 所以应选C.
4. If you are not free today, come another day __________.
A. too B. so C. instead D. yet
解析：instead 作副词用时意为"代替，顶替"， 表示前面的事情没做， 而是做了后面的事。Instead一般位于句首。应选C.
5．He can't tell us ________, I think.
A. important anything B. anything important
