They do so in different ways , as Latin America illustrates.

问:这里as是介词还是连词,引导的是什么从句?介词是否不可以引导从句?

They do so in different ways, as Latin America illustrates.

划线部分为“比较状语从句”,as 是比较代词。传统语法规定为“非限制性定语从句”,as 是关系代词,指代前文全部内容,同时作了 illustrates 的宾语。跟下列表达是一个种类:

as everyone knows 大家都知道

as the chart shows 正如图表所示