一般来说not as as与not so as意思上是一样的，都是“与……不一样”但是前者语气略弱，后者语气略强。
但是在肯定句中只能用as as不能用so as。
例如：She is as tall as you are. 意思是她和你一样高。
这里就不能用so as了。
扩展资料
not as as
So there will still be content, but just not as much of it from me.
所以这儿还会有新的内容，只是不像之前那么多了。
Everyday experience shows us that ice is not as as water and it therefore floats.
日常经验告诉我们，冰的密度比水小，因而能浮在水面上。
But the selectivity calculated in this way is not as accurate as selectivity calculated using datadistribution.
但是，使用该方式计算的选择性不如使用数据分布计算的选择性准确。
It is not as if they have no arguments.
这并非是因为他们没有争论。
Not as ill as I wish,'' he replied.
‘不像我所愿望的那么严重，’他回答。
not so as
Arty situated himself next to her, not so close as to fall within the weather of her communicable diseases but not so far as to appear rude.
Arty位于她旁边，并不是那么接近于她的传染病的天气，但并不是显得粗鲁。
Stalin noted quite explicitly that even as productivity improved wages should not so as to allow greater state profits and thus more money that could be reinvested.
斯大林非常清楚地指出，即使生产率提高，工资也不应该允许更大的国家利润，从而可以再投资更多的资金。
It was possibly slightly edited but not so much so as to detract from the harsh reality of this awful event.
它可能只是略微编辑，但没有那么多，以减损这个可怕事件的残酷现实。