原级比较：主语+谓语（系动词）+as+形容词/副词原形+as+从句(As+原级+as“和一样” not as/so+原级+as 或 less+原级+than“不如”) He is as tall as I.1. 表示“比更”时，“用比较级+than”结构，如：He is taller than his father.2. who/which+be+比较级，A or B?如：who is taller, Tom or John?Which is more expensive, a bike or a computer?3. 主语+be+the+比较级+of the two.“两者之中最的那一个”。如： Tom is the taller of the two boys.4. the+形容词比较级, the+形容词比较级, 表示“越, 越”。如：the more you study, the more you know.5. 形容词比较级+and+形容词比较级The computer is cheaper
