Question

请问这句话的语法结构怎么分析

Answer 1

主句：this student found herself in classed and social events.
Over the next four years是时间状语。
who considered herself intelligent是非限制性定语从句，修饰this student。
in which people of other races performed as well as or more competently than she did又是一个定语从句，修饰events。

in which people of other races performed as well as or more competently than she did包含了两个比较状语从句，相当于：
in which people of other races performed as well as she did + in which people of other races performed more competently than she did。

句意：在接下来的这四年里，这个自认为很聪明的学生发现自己处在等级森严的社会事件中，在这里，来自别的种族的人比她还要更有竞争力，至少不比她差。
（in classed and social events译为“处在等级森严的社会事件中”不一定贴切。以上译文仅供参考。）