Systemic Grammar and Functional Grammar are two inseparable components for an integral framework of Systemic-Functional linguistic theory. Systemic Grammar aims to explain the internal relations in language as a system network, for meaning potential. This network consists of subsystems from which language users make choices. Functional Grammar aims to reveal that language is a means of social interaction,based on the position that language system and the forms that make it up are inescapably determined by the uses or functions which they serve. Systemic Grammar contains a functional component, and the theory behind Functional Grammar is systemic.

本题考查韩礼德系统语法和功能语法的关系。 系统-功能语法的建立基于以下两个事实： ①语言的使用者实际是在一组系统中进行选择， 并且努力在社会的相互作用中实现不同的语义功能； ②语言和人类的社会活动紧密联系， 不可分离。 于是系统-功能语法把语言的实际运用作为研究的对象。