the aims of these early grammarians were threefold: (a) they wanted to codify the principles of their languages, to show thatthere was a system beneath the apparent chaos of usage.
这个句子中的to…to是两两个并列的句子的吗？ 可以用，来分两个并列句？？
To show that 是一个宾语从句吗？ 是不是that可以省略？