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语法——形容词和副词的比较级和最高级
Part 1:知识点
变化规则：
情况 比较级 最高级
变化规则 示例 变化规则 示例
一般情况 +er tall-taller +est tall-tallest
以e结尾的词 +r nice-nicer +st nice-nicest
以重读闭音节结尾的词 双写最后一个字母，再+er big-bigger 双写最后一个字母，再+est big-biggest
以辅音字母加y结尾的词 变y为i，再+er busy-busier 变y为i，再+est busy-busiest
大部分多音节词 在前面加more more careful 在前面加most most careful
不规则的词 good/well-bettermany-morefar-farther/further good/well-bestmany-mostfar-farthest/furthest
比较级的具体用法：（两者之间进行比较）
用来把彼此独立的事和人进行比较，表示“比……更……”，标志词than
例句：He is taller than his father.他比他父亲高。
She runs faster than Lucy.她比Lucy跑得快。
当讲某两个事物在某一方面是一样的，可以用“as+形容词/副词+as”，（这里的形容词和副词都用原级）
例句：Jack is as tall as Mike.杰克和麦克同样高。
【拓展】否定比较级：not as …as…/less…than
例句：This storybook is less interesting than that one.这本故事书不如那本有趣。
I don’t write as/so well as Harry.我不如Harry写得好。
双重比较法，可以表示持续不断的变化（注意后面不能跟than引导的比较状语从句）
例句：They are studying harder and harder.他们学习越来越努力。
Our hometown gets more and more beautiful.我们的家乡变得越来越美丽。
表示两个变化是一起发生的，可以用比较形式和the一起用，表示“越……，就越……”
例句：The higher the mountain, the thinner the air is.山越高，空气越稀薄。
The earlier you start, the sooner you will be back.你出发得越早，你回来得越快。
最高级的具体用法：（三者或三者以上进行比较）
1.表示“最……”
例句：Li Jun is the tallest in his class.李军是他班级最高的。
He works the hardest in his class.他是班上最努力的。
当最高级的前面无限定词the或者有不定冠词a/an时，只表示“很……，非常……”
例句：Monday is my busiest day.周一是我很忙的一天。
Qingdao is a most beautiful coastal city.青岛市一个非常美丽的海滨城市。
Part 2:练习
一、单选。
（ ）1.The population of the world in 20th century became very much _________ than that in 19th.
A. bigger B. larger C. greater D. more
（ ）2.The magazines are ______ easy that the children can read them well.
A. such B. so C. too D. very
（ ）3.I think basketball is _______. I like to watch it.
A. boring B. bored C. exciting D. excited
（ ）4.-What's the weather like tomorrow？-The radio says it is going to be even ______.
A. bad B. worst C. badly D. worse
（ ）5.He never does his work _______ Mary.
A. as careful as B. so careful as
C. as carefully as D. carefully as
二、写出下列单词的比较级。
1.short__________ 2.fat__________ 3.nice__________ 4.low__________ 5.late__________ 6.well__________ 7.fast__________ 8.beautiful__________ 9.heavy__________ 10.early__________ 11.thin__________ 12.big__________ 13.far__________
三、用所给单词的正确形式填空。
1.My brother is two years _______(old) than me.
2.Jim is as _________(fat) as Mike.
3.--Is your sister _______(young) than you
--Yes,she is.
4Who is _______(thin), you or Peter
My eyes are ______(big) than ______(she)
答案：
一、BBCDC
二、1.shorter 2.fatter 3.nicer 4.lower 5.later 6.better 7.faster 8.more beautiful 9.heavier 10.earlier 11.thinner 12.bigger 13.farther/further
三、1.older 2.fat 3.younger 4.thinner 5.bigger hers

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