这个句子里为什么不是"a high standard"而是“high a standard"?

题目

这个句子里为什么不是"a high standard"而是“high a standard"?
If you find something or someone wanting,they are not of as high a standard as you think they should be.

答案

　　as...as 结构中,前一个as 是副词（修饰形容词high,不,不可以说 as a .+adj.+ n.） ,后一个是连词（引导比较状语从句）.象这样的还有 how ,so ,too 如 1 .How fine a day it is !2 He is so good a doctor that .3....too cold a day ...