修辞结构理论是一个纯结构理论，修辞关系理论中的修辞关系即由此而来。
RST is a pure structural theory from which the concept of rhetorical relations is borrowed.
修辞结构理论作为一种篇章结构理论 ，着眼于 分析 段落中句子与句子之间的关系 ，乃至篇章中 段落与 段落之间的关系 ，从而达到对整篇文章结构与内容的把握。
As a theory of textual structure, Rhetorical Structure Theory (RST) focuses on the relation between sentences and that between paragraphs so that the structure of a text may be discernable.
他们的主要区别在于，英美留学生作文的修辞结构图示包含的修辞关系更为丰富，且联合关系出现的频率较小。
The marked difference lies in a higher variety of relations and a lower frequency of joint found in the diagrams of compositions by the native speakers studied.
最后，中国大学生和英美留学生同题英文作文的修辞结构图示有着类似的上层结构，且处于图示最上层的修辞关系相同。
Third, the top two levels of the diagrams of compositions by Chinese students and native speakers are mainly the same and show same discourse relation preferences in the top two levels.
最后，中国大学生和英美留学生同题英文作文的修辞结构图示有着类似的上层结构，且处于图示最上层的修辞关系相同。
Third, the top two levels of the diagrams of compositions by Chinese students and native speakers are mainly the same and show same discourse relation preferences in the top two levels.
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