本文在对已有的对外汉语教学语法体系研究进行梳理的基础上,着重从语法边界和形义关系两个方面展开理论分析。关于语法边界问题,本文基于对语法本质的认识,主张狭义语法观,认为词是基本语法单位,句子是最大的语法单位,并主张重视语法和词汇的界限;关于形义关系问题,本文通过三个实例强调对外汉语教学语法体系构建和语法教学实践要将形式和意义紧密结合的原则落到实处。 Based on the review of the existing grammar system of teaching Chinese as a foreign language, this thesis focuses on the theoretical analysis from two aspects: the grammar boundary and the relationship between form and meaning. On the issue of grammar boundary, based on the understanding of the nature of grammar, the author advocates the concept of narrow grammar, believing that word is the basic unit of grammar and sentence is the largest grammatical unit, and advocating the emphasis on the boundary between grammar and vocabulary. On the relationship between form and meaning, A case study emphasizes that the construction of grammar teaching system for Chinese as a foreign language and the practice of grammar teaching should be carried out in such a way that the principle of combining form and meaning with one another.