英语句式剖析

It seems a reasonable thing to sayWhat their condition was, the full arrayOf each of them,as it appeared to me. 这句话中的as是什么使用方法？

这是诗歌形式，为了没一行押韵，做了特殊的断句，每一行都以大写字母开头，尽管未必是一个句子的开头。改为散文格式则为：

It形式主语seems系词 a reasonable thing表语 to saywhat their condition was不定式短语作真的主语, 省略的主语和系词（it指代their condition) the full arrayof each of them表语, as it appeared to me比较分句（即传统语法所说的as引导的非限制性定语从句，修饰it was the full array of each of them这个分句）.