.形容词和副词比较等级的用法I）同级比较：1甲与乙相比程度相同：用as+原级形容词/副词+as2甲与乙相比，甲不及乙：用not as/so+形容词/副词as。 如：Dick is as tall as his brother.Tom speaks Chinese as frequently as Jack.The picture is (not) as beautiful as that one .II）比较级：1. 表示A超过B。此时用形容词和副词的比较等级more(adj/adv+er)+ thanOur classroom is brighter than yours. He did more carefully in the exam than I .I dont think math is more important than physics.2 表示A不及B用句型：less+形容词/副词的原级+than= not as/so+形容词/副词as = not more- than- 如：这幅画比不上那幅画漂亮
