原级,比较级,最高级的用法: 原级1. as+原级+as; not as(so) +原级+as 即,asas 既可用于肯定句也可用于否定句,但soas只能用于否定句2. so, very, quite, rather,too, much too,后加原级。3. three times as tall as that one.比那高三倍twice as old as he.比他大两倍比较级:1. 根据上下文句意,表示比较时用比较级Eg. This coat is too small, could you show me a bigger one?2. 句中有than时,用比较级3. 句中有 “A or B?”时,用比较级。4.much, even, a little(lot), far, still,no,any等修饰比较级5. “the + 比较级 + of the two”表示“两者中较的一个”。Wang Gang is the taller of the two boys. 6. “比较级 + and