As college students are familiar with the grammatical and lexical cohesion, the thesis focuses on elaborating the guiding effect of thematic structure and information structure to coherence teaching.

• 鉴于学生比较熟悉语法、词汇衔接手段，本文重点论证主位结构和信息结构对写作教学中连贯教学的现实指导意义。