As data fom this survey show us,there are racial,age,and religious differences in what people consider to be the main purposes of getting married.可以改成 racial,age,and religious are differences in what people consider to be the main purposes of getting married.这里的in what...是介词短语作状语 这个what people引导的从句 是介词的宾语从句 what people是从句中的主语
what是定语 修饰people
One obvious criticism is that the price of breadth is depth;many of Mr.Smith's essays raise as many questions as they answer.这里的as they answer引导的定语从句
这个they指的是那些文章
翻译是 史密斯先生的很多文章中 提出了 与回答的 一样多 问题.