3.最高级的用法: 三方或三方以上进行比较时, 用最高级, 最高级前多用the, 基本形式为: the + adj / adv的最高级 + (名词) + 表示范围的短语或从句

　　　 　　a. He is the eldest among the sisters.

　　　 　　b. Shanghai is the biggest centre of industry in China.

　　　 　　c. Beijing is one of the most beautiful cities in China.

2.比较级的用法: 两方进行比较时, 多用than

　　　 　　a. It is colder today than it was yesterday.

　　　 　　b. His handwriting is more beautiful than yours.

　　　 　　c. He did his homework more carefully than you did yours.

1.比较级和最高级的形式:

　　 ①.规则变化:

　　　 a.在单音节形容词后及少数以-er, -ow, -ble, -ple结尾的双音节形容词和少数副词原级后, 加-er, -est或­-r, -st, 如: strong, young, clever, able, simple, narrow, hard, fast, slow等

　　 　b.在以­-e结尾的单音节形容词和少数副词原级后, 加-r, -st, 如: brave, wide等

　　　 c.形容词以发短元音的元音字母+辅音字母结尾时, 双写辅音字母, 再加-er, -est,如: big, hot, thin等

　　　 d.辅音字母+y结尾的单音节及双音节形容词和少数副词(由形容词+ly构成的副词除外), 要将y变为i, 再加-er, -est, 如: easy, happy, early等

　　　 e.在双音节和多音节形容词和大多数副词原级前可以加more, most表示比较级和最高级, 如: useful, childish, important, happily, clearly, quickly等

　　　 f.有少数单音节形容词加more / most构成比较级和最高级, 如: fond, tired, pleased, glad, often, fit等

　　　 g.下列形容词和副词的比较级和最高级可用两种方法构成: cruel, strict, friendly, often, fit

②.不规则变化的形容词如: good / well, many / much, bad / badly, little, far

2.原级的用法:

　　 ①.表示被比较双方在某一方面相等或相同时, 用as + adj / adv + as结构, 表示“…和…一样”

　　　 　　a. Xiao Li is as tall as his sister.

　　　　 b. It is as cold today as it was yesterday.

　　　　 c. There are as many seats in this hall as in that hall.

　 　②.表示被比较双方在某一方面不相等或不同时, 用not as / so + adj / adv + as, 表示“…和…不一样”

　　　　 a. Xiao Li is not as / so tall as his brother.

　　　　 b. It is not so / as cold today as yesterday.

　　　　 c. There are not so / as many seats in this hall as in that hall.

1.原级的形式: 即原形

7.作状语时,各类副词的排列顺序一般为: 方式副词, 地点副词, 时间副词

　　　　 a. He behaved well here yesterday.

形容词和副词的比较等级

6.修饰全句的副词通常放在句首

　　　 　　a. Truly he is an honest man.

b. Still, in spite of what you say, I don’t think it is true.

5.修饰名词的副词放在被修饰词之后

　　　 　　a. The villagers there are busy getting in wheat.

4.及物动词和副词小品词(down, on, off, in, out, up)组成的动词词组有名词作宾语时, 该名词可放在副词之后或副词之前; 若有代词作宾语时, 则代词一定放在副词之前

　　　　 　a. He cut down the tree. =He cut the tree down.

　　　　 　b. He cut it down.

3.方式副词的位置:

　　 ①.修饰不及物动词的方式副词要放在被修饰词之后

　　　　 　a. His sister sings well.

　　　　 　b. The baby is sleeping soundly.

　 　②.修饰及物动词的方式副词可放在被修饰词之前或宾语之后; 如果宾语较长, 也可放在动词和宾语之间

　　　　 　a. He speaks French fluently.

　　　　 　b. All this morning Liu Ying has been writing carefully some English letters to her teachers.