Theme is an important component of textual metafunction in Systemic Functional Grammar. 摘要主位理論是系統功能語法中語篇功能的重要組成部分。
This paper discusses the structure of Theme-Rheme and its textual function in a study of Western linguists' theories. 本文根據西方語言學家的語言功能理論,探討了主位與述位在語篇中的結構組成及語篇功能。