1 形容词和副词的比较级和最高级 一、变化规则 ①一般的比较级和最高级在形容词或副词后加-er 或-est， 如：small --- smaller --- smallest ② 以不发音-e 结尾的形容词或副词直接加 –r 或 –st， 如:large --- largest --- largest ③ 重读闭音节词尾是一个辅音字母的，需双写该辅音字母，再加-er 或-est。 ④ 以辅音字母加 y 结尾的形容词和副词，把“y”变“i”，再加 –er 或-est. busy---busier---busiest happy---happier---happiest 一些双音节及多音节形容词或副词前要加 more 和most，如： slowly --- more slowly --- most slowly difficult---more difficult---most difficult beautiful---more beautiful---most beautiful 还有一些不规则的变化： good / well---better---best many/much---more---most bad / ill / badly ---worse---worst little---less---least far --- farther / further --- farthest/ furthest 二、形容词和副词的等比句型 ①as…as… 和……一样 I’m as tall as you. ② not as(so)…as 不和…… 一样（在否定句中常用 so 来代替 as）如， I can’t run so fast as you. 另外 as…as possible 为固定结构，如，as soon as possible, as quickly as possible 等。 在以上两个句型中形容词或副词一定要用原级。 练习：她吃的不如她爸爸多。 ____________________________ 我的房间不如你的干净。_______________________________________ 你必须跟他一样认真。_______________________________________ 2 ▲as…as 前还可以加倍数,如: The room is two times as large as that one. 三、比较级（两者之间） (1) 两者相比: Which is+比较级,A or B? 如: Which is bigger, the sun or the moon? (2)比较级+ than. 如: Mike is taller than John. (3)有"of the two”, 用 the+比较级. 如: Lucy is the more careful of the two. (4) 比较级前可用 much/a lot //far/ a little /a bit/even 等修饰. 如: This book is much more interesting than that one. The blouse I bought yesterday is a little less expensive. To play basketball is far more enjoyable to the boy. (5) 比较级+and+比较级...
