关系词：
如连接名词性从句的who, whom, whose, what, which, whatever, whichever等关系代词和when, where, how, why等关系副词;还有连接定语从句的关系代词，如who, which, that, whom, whose等等;它们是第二大拆分点。
4.标点符号：
标点符号常常断开句子的主干和修饰部分，也是一个明显的拆分点。
5. 除此之外，介词on, in, with, at, of, to等引导的介词短语，不定式符号to，分词结构也可以作为拆分点。
例如：Social science is that branch of intellectual enquiry which seeks to study humans and their endeavors in the same reasoned, orderly, systematic, and dispassioned manner that natural scientists use for the study of natural phenomena.(35词，2003年62题)
拆分本句的信号词有：which, in, that。注意本句出现的两个and连接的是几个词汇，并非句子，所以不用作为拆分点。因此这个句子可以拆分成四个片段。拆分后句子的总结构是：
(1)主干Social science is that branch of intellectual enquiry;
(2)定语从句which seeks to study humans and their endeavors;
(3)方式状语in the same reasoned, orderly, systematic, and dispassioned manner;
(4)定语从句that natural scientists use for the study of natural phenomena。
