The author adopts the cohesion modal developed by Halliday and Hasan, which is, reference, ellipsis and substitution, conjunction, and lexical cohesion.

• 作者采用了韩礼德和哈桑总结出的衔接理论，即以照应、省略、替代、连接以及词汇衔接这几种衔接手段为代表的理论框架。