as well as 中的2个as分别是什么词性？

都是副词，牛津字典的英文解释如下：
adverb
as ...as ... used when you are comparing two people or things, or two situations: You're as tall as your father. ◆ He was as white as a sheet. ◆ She doesn't play as well as her sister. ◆ I haven't known him as long as you (= as you have known him). ◆ He doesn't earn as much as me. ◆ He doesn't earn as much as I do. ◆ It's not as hard as I thought. ◆ Run as fast as you can. ◆ We'd like it as soon as possible.

以上是我最初的回答，但是经仔细研究考证，得出应该是第一个是副词，第二个是介词。原因如下：第一个as用于修饰well，修饰副词的只能是副词。
第二个as是置于名词前。介词preposition为前缀pre-和position的复合词。pre-是“之前”的意思，position是“位置”的意思故其原意是指“前置词”。所以第二个as是前置词，即介词。
所以二楼才是最早的正确答案。

第一个as 是 副词

第二个as 是介词

ad.
conj.