1、as...as 用于肯定句中，表示像......一样。
2、so...as 一般在句型not so ...as 中使用，与not as ... as 同义。也就是说so...as 常用于否定句中 。
拓展资料
as...as 的用法
1、Then poverty does not get elevated as* as rapidly as it might if inequalities were not increasing.
如果分配不公的程度没有加剧。，贫困率也就不会，快速增长了。
2、As as possible In order to improve your english level, you should read as more english articles as possible.
为提高英语水平，你应尽可能多的阅读英语文章。
3、Tom Jenkins ( Executive Director): I think the most important thing that people can do is look upon the Olympics as a* as a great party, rather like a wedding.
汤姆·詹金斯（执行总监）：我认为人们能做的最重要的一点，就是把奥运会看作是一场盛大的晚会，而不是婚礼。
4、As God as my witness* as god as my witness they're not going to lick me.
上地为我作证，上帝作证，我是不会屈服的，我要度过这难关。
5、I tell you, it is the grandest stuff* an unflinching commitment to a better tomorrow and a will to face adversity as a people* as a nation.
那就是一个“明天会更美好”的无畏承诺和一份勇敢直面现实灾难的决心，这物质每个中国人有，中华民族也有。
6、Now the acceleration as you w* as you will see, is half times g sine beta; 2/ 3 in the other case it was2/ 3.
加速度，你们会。，得出的加速度，是1/2乘以gsinβ，在另一个例子里是。
7、You can also think of it as A plus* B as C plus B is A.
还可以。，把A看成C加。
8、I understood as a child* I thought as a child.
心思像孩子，意念像孩子。
so..as...的用法
1、Claire positioned herself so as not to obstruct David's line of sight.
克莱尔为了不挡住戴维的视线挪了一下位置。
2、We left in the daytime so as not to arouse suspicion.
我们在白天离开以避免引起怀疑。
3、He promised to be quick so as not to inconvenience them any further.
他许诺尽快完成，以免给他们带来更多不便。
4、It was virtually impossible to synchronise our lives so as to take holidays and weekends together
想让我们的生活步调保持一致好一起去度假和过周末几乎是不可能的事。
5、I was beginning to feel alarm, but kept it to myself so as not to worry our two friends.
我开始有点慌了，但仍旧不动声色，免得我们的两个朋友担心。