3. 比较级与最高级的构成

　　规则变化：

　　(1)small smaller smallest clever cleverer cleverest

　　(2)nice nicer nicest fine finer finest

　　(3)hot hotter hottest big bigger biggest

　　(4)happy happier happiest early earlier earliest

　　(5)careful more careful the most careful

　　delicious more delicious the most delicious

　　不规则变化：

　　good better best well better best bad(badly)worse worst ill worse worst

　　many more most much more most little less least far farther farthest

　　4. 比较级与最高级的用法

　　比较级表示两人或两事物之间的比较

　　This book is much easier than that one.

　　A turkey is much bigger than a chicken.

　　I’m feeling much better.

　　The boy is the taller of the two.

　　最高级表示三者或三者以上人或事物之间的比较，其中有一个在某方面超出其他几个

　　He is the tallest of the three.

　　Of all the books, this book is the best.

　　What’s the best season in a year?

　　Jack is the tallest in his class.

　　Jack is taller than any other student in his class.

　　Jack is taller than any of the other students in his class.

　　This box is the heaviest among all the boxes.

　　5. 比较级与最高级常用句型

　　(1)as…..as / not so…..as 和……一样/ 和……不一样

　　She is as clever as her sister.

　　I run as fast as he(does).

　　This river is three times as long as that one.

　　Chinese isn’t as easy as English.

　　The book isn’t so interesting as that one.

　　I haven’t as many books as you.

　　(2)one of + the +最高级+名词复数 最……之一

　　Shanghai is one of the biggest cities in the world.

　　Fast food is one of the most popular food .

　　He is one of the richest men in China.

　　(3)the +比较级，the +比较级 越……越……

　　The more, the better.

　　The harder you study , the cleverer you will be.

　　The more exercise you take , the thinner you will be.

　　(4)比较级and 比较级表示越来越……

　　The days are getting longer and longer.

　　It’s getting colder and colder.

　　Foreign languages are more and more important.