not as as与not so as 的区别

not as as与not so as 的区别
not as as与not so as 的区别

not as as与not so as 的区别
肯定式为as...as,否定式为not so...as...,用于书面语和正式文体；not as...as...,用于口语和非正式文体.对于一般学习者可以不加区分.