前言亦叫引言、导言、绪论、概述,它是论文主体部分的开端。对比较短的论文,可以只有一小段文字起着前言的功效,它可不用章条名编号。前言的内容主要包括本课题的意义、目的、理由(是属于哪一方面的课题,课题是怎样拟定的,作者确定该题的动机、背景及理由);论文在所属领域中所占的地位;课题的范围 Preface, also known as the introduction, introduction, introduction, overview, it is the beginning of the main part of the thesis. Shortened essay, only a short text can play the role of preface, it may not have a chapter name number. The main content of the preface includes the significance, purpose and reasons of the subject (which one belongs to the subject, how the subject is drawn up, the author determines the motivation, background and reason of the question), the position of the thesis in the field, The scope of the topic