童鞋,你好。
1)possible在这里的词性是形容词,解释为:可能的。
2)第二个as确实是连词,连接的状语从句,
3)这里省略了it is 。即:as soon as(it is) possible
4)相类似的用法还有引导比较状语的the same as 中as 和more than中的than
如 he runs as fast as you(do)
he has the same book as you (do)
he runs faster than you (do)
you see 了吧?
as...as... 像……一样/那么……,如:as fast as a leopard 像猎豹一样快
possible 可能的,形容词
as soon as possible 像尽可能的那么快,也就是“尽快”的意思
possible是形容词,第二个as 是副词