1. Introduction, as the beginning of the paper, briefly introduces the writing background and purpose of the paper, the origin and the reality of the research requirements, as well as the general situation of previous work and research in related fields, explains the relationship between this research and the previous work, the current research hotspots, existing problems and the author's work significance, and leads to the theme of this paper to guide readers.

2. The introduction can also point out the theoretical basis, experimental basis and research methods of this paper and briefly explain its research content; A few words foreshadow the results, significance and prospect of this study, but there is no need to discuss it. The preface should include: what is the theoretical or practical basis for this research? What is the theoretical and/or practical significance?

3. First, we should introduce the historical background and theoretical basis, the research progress and achievements of predecessors or others on this topic, and whether there are different academic viewpoints in academic circles. Tell the reader clearly why you want to do this research, and the sentence should be concise and straight to the point. If the research project has never been carried out by others, then the innovation is obvious, and the innovation of the research should be explained. But in most cases, the research projects have been carried out by predecessors. At this time, we must explain the differences and essential differences between this research and the research, rather than simply repeating the work of predecessors.

I. Preface

Preface is also called introduction, introduction, introduction or preface. It is the beginning of the paper, mainly explaining the origin, purpose, significance and conclusion of the topic, and the text should be concise and to the point.

(1) The main content of the preface

(1) The purpose and scope of the research and the general situation of other people's research in related fields.

(2) The research process, methods, theoretical basis and experimental basis of the subject.

(3) research results and their significance.

(2) Matters needing attention in preface writing

(1) Get to the point, be concise, and 211-311 words is appropriate.

(2) orderly, clear and objective. Use words such as "pioneering" and "opening up new fields" with caution, and don't write cliches such as "giving advice" and "throwing bricks to attract jade".

(3) Don't turn the preface into a "clone" of the feed or a filling of the feed.

(4) when introducing documents, you should summarize them in your own language, and it is not appropriate to quote others' original texts in large paragraphs.