形容词比较级和最高级

形容词、副词的比较级和最高级的用法：
当两种物体之间相互比较时，我们要用形容词或副词的比较级；
当相互比较的物体是三个或三个以上时，我们就要用形容词或副词的最高级。

一、形容词、副词的比较级和最高级的变化规律：
你知道什么是开音节和闭音节吗？
1．开音节
1）以发音的元音字母结尾的单节。

例：be，he。

2）以辅音字母（r 除外）+不发音的e结尾的音节。

例：make，like
2．闭音节
以一个或几个辅音字母（r 除外）结尾而中间只有一个元音字母的音节。

例：map，desk 1. 单音节形容词或副词后面直接加-er或-est
tall—taller—tallest fast—faster—fastest
2. 以-e结尾的单音节形容词或副词直接加-r或-st
large—larger—largest nice—nicer—nicest
3. 以辅音字母+y结尾的形容词或副词，改-y为-i再加-er或-est
busy—busier—busiest early—earlier—earliest
4. 形容词或副词是重读闭音节时，双写最后的辅音字母，再加-er或-est hot—hotter—hottest big—bigger—biggest
5. 多音节形容词或副词前面直接加more或most，注意：形容词后不需要再加-er或-est
例如：more beautifuler ⅹ more beautifulest ⅹ
delicious—more delicious—most delicious beautiful—more beautiful—most beautiful
6. 不规则变化
good (well)—better—best bad (badly)—worse—worst
many(much)---more---most little---less---least
old---older---oldest old---elder---eldest
far---farther---farthest far---further---furthest
你知道最后两组形容词为什么会有两组比较级和最高级吗？
答案：
二（一）形容词、副词原级比较的句型：
1.肯定式：as…as
2.否定式：not as (或者so)…as 例如：My room is not as _________ (big) as my brother' s. （二）比较级的句型：
1.比较级+ than 你能举个简单的例子吗？
2.比较级,…or….(选择疑问句中)
Which is_____country, Canada or Australia?（用large的适当形式填空）
3.比较级+and+比较级
It’s getting warmer and warmer.
4.the+比较级，the+比较级
The harder you work, the more you will learn.
（三）最高级的句型：
1. 形容词最高级前一般要加the，用of/among/in 引出比较范围。

例如：He is the thinnest boy in my class. I am the best of (among ) the three.
2.副词最高级前不需要加the 。

例如：Jim goes to bed latest in my family.
3.形容词比较级和最高级互换：
Shanghai is the largest city in China。

= Shanghai is larger than any other city in China.
= Shanghai is larger than the other cities in China. (注意名词单复数)
一. 词形变换。

比较级最高级
large _________________ fast _________________
easy _________________ wet _________________
good _________________ important _________________
well __________________ bad _________________
many _________________ little _________________
far _________________ strong _________________
safe ________________ expensive _________________
二选择填空
1.This pencil is___ than that one．A．longest B．long C．longer D．as long
2.These children are ____ this year than they were last year．
A．more tall B．more taller C．very taller D．much taller
3.Tom is stronger than ___ in his class．
A．any other boy B．any boys C．any boy D．other boy
4.Which do you like ___，tea or coffee？A．well B．better C．best D．most
5. Who jumped____of all？A．far B．farther C．farthest D．the most far
6. Li Lei is___ student in our class．A．tall B．taller C．tallest D．the tallest
7.This machine does not run as ____ as that one. A. smoothly B. more smoothly C. most smoothly
8.When spring comes，it gets____．
A．warm and warm B．colder and colder C．warmer and warmer D．shorter and shorter
9 ___ I look at the picture，____ I like it．
A．The best；the more B．The more；the less C。

The more；less D．More；the more
10. The Yellow River is one of ______rivers in China. A long B longer C the longest D longest
三. 用所给单词的适当形式填空。

1. My school is ______________, but Tom’s school is
______________ than mine. And Sally’s school is the______________. (small)
2. Rabbits can run ______________, but tigers can run
______________ than rabbits, and cheetahs can run______________ of the three. (fast)
3.Pig is ______________, but deer is ______________ than pig, and elephant is the ______________ (heavy)
4. Every day is ______________. But today is the______________ day I have ever had. (busy)
5. I think pizza is the ______________ food of all.(delicious)
四. 汉译英。

1．这本书跟那本书一样有趣。

This book is _____ _____ _____ that one.
2．你游泳没有你弟弟好。

You can’t swim _____ _____ _____ your brother
3．她的身体状况一天天好起来。

He is getting _____ ______ ______ every day
4．他比我大两岁。

He is _____ ______ ______ than I.。