1. 区别在于含义2. "no as as"表示没有像某个人或物一样，强调缺乏相似性；"not as as"表示不像某个人或物一样，强调不同之处。
3. 例如，"I have no car as fast as yours"表示我没有一辆像你的那么快的车；"I am not as tall as you"表示我不像你那么高。
no as as和not as as有什么区别
no + 名词 + as而Not + 形容词 + as
分析如下：
1.as …as 译为和……一样（用于肯定句），表示的是同级比较，中间可以加形容词或副词。
2.not as …as 译为和……不一样（用于否定句），也表示同级比较，中间可以加形容词和副词。但是要区分与not so …as ，前者语气弱，后者语气强。
一、as作连词的用法
1.as...as意为"和……一样"，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+ adj./ adv. +as。例如：
(1)This film is as interesting as that one.这部电影和那部电影一样有趣。
(2)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅。
2.其否定式为not as/so +adj./ adv. +as。例如：
This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用。
3.若有修饰成分，如twice, three times, half, a quarter等，则须置于第一个as之前。例如：
Your bag is twice as expensive as mine.你的袋子比我的贵一倍。
4.几个关于as...as的常见句型：
(1)as...as possible 例如：
Please answer my question as soon as possible.请尽快回答我的问题。
(2)as...as usual/before 例如：
She looks as pretty as before.她看起来和以前一样漂亮。
(3)as long as... (引导条件状语从句) 例如：
It took us as long as three years to carry out the plan.我们花了长达三年的时间才完成这项计划。
(4)as far as 例如：
He walked as far as the railway station yesterday evening.昨天傍晚，他一直散步到火车站。
(5)as well as 例如：
She cooks as well as her mother does.她烧菜烧得跟她母亲一样好。
5.as作连词引导让步状语从句
Strange as it may seem, nobody was injured in the accident.这次as单独引导定语从句时，先行词可以是一个词，也可以是一个句子或短语。例如：
(1) She is late, as is often the case.她迟到了，这是经常的事。(先行词是整个主句)
no as as和not as as有什么区别
no as和not as你区别在no和noy后面跟的词性不一样，no + 名词 + as ，Not + 形容词 + as