比较级的用法
1.原级
（1） as…as…。如：
Do you think art is as interesting as music?
你认为艺术和音乐一样有趣吗？
She doesn’t speak as well as her friends, but her written work is excellent.
虽然她的口语不象她的朋友们那样好，但她的写作非常优秀。
（2）“not as…as”或“not so…as…"
English is not as difficult a language as Chinese.
英语不像汉语那样难学。
He is not so hard-working a student as you.
他不是一个象你一样努力学习的学生。
（3） 有些“as…as…”结构已成为固定结构。如：as far as(…那么远，就…)，as well as (同，和，也，又)，as soon as (一…就…)等。如：
The children walked as far as the lake.
孩子们一直走到湖边。
As far as I know, he came from the USA.
就我所知，他来自美国。
Come to my office as soon as you finish your homework.
作业一完成，你就到我办公室来。
2.比较级
（1）比较级常用于“比较级+than”的结构中。如：
She is better than I (me) at swimming .
她比我更善于游泳。
The pianos in the other shop will be cheaper, but not as good.
另一家商店的钢琴会便宜些，但没这么好。
（2） “比较级 + and + 比较级”或“more and more +原级”表示“越来越……”
如：It becomes warmer and warmer when spring comes.
春天来了，天气变得越来越暖和了。
It is getting cooler and cooler.
天气越来越凉爽。
The wind became more and more heavily.
风变得越来越大。
Our school is becoming more and more beautiful.
我们的学校变得越来越美丽。
（3） 表示倍数的比较级用法：
①. A is …times as big /high/long/wide/large as B.
如：Asia is four times as large as Europe.
亚洲是欧洲的四倍大。(亚洲比欧洲大三倍)
③. A is …times larger /higher/longer/wider than B.
如：Our school is twice bigger than yours.
我们学校比你们学校大两倍。
（4） the + 比较级 ，the + 比较级 → 越……，越……
The more ,the better.
The more you eat, the fatter you’ll be.
（5）比较级前可用many, much, a little, 等词语修饰表示比较的程度。如：
Your are standing too near the camera. Can you move a little farther?
你站得离照相机太近，你可以站远一点吗？
注：many只能用于中心词是可数名词复数的比较级前。如：
He read many more books than his parents.
他比他的父母读的书更多。
最高级的用法
例句
I am the tallest in our class. 我是咱们班里个子最高的。
My movements are the most graceful of us three. 三个人中我的动作是最优雅的。
Racing is the most interesting sport I've ever known. 赛跑是我知道的pldds运动。
How much did the second most expensive hat cost?