than 前面的词用比较级，后面用宾格、人名等举例 ： He is taller than me(SuYang).as ....as 中间的词用原级，原级简单的说就是原形举例： Ben is as strong as Mike.
as 原级 as 意思是 和---一样 than是有比较含义的
A is as adj原级 as B是指 A和B同样怎样A is adj比较级 B是指 A比B 怎样
