It mainly refers to the recent research and significance of the subject in the preface part.

综述部分主要谈本课题的研究现状及本课题研究的意义。

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The preface part of the thesis introduces the research background, the contents of the thesis, the way of thinking, the research methods and the structure of the thesis.

第一章引言部分介绍论文的研究背景、研究内容及其意义、论文的研究思路和研究方法，以及论文的结构。

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In the preface part, the concept and esthetics characteristic of 90's modern Chinese poem is put forward, with an inquiry into recount the reason of narrative occurrence.

引言部分提出了90年代现代汉诗叙事性的概念和美学特征，并探讨了叙事性发生的原因。

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The school essays that we are taught to write start with a boring preface, ramble on forever, and save the best part for last.

FORBES: My Secrets: How I Became a Prolific Writer and Learned to Get Beyond School Essays