Introduction, as the first chapter, is the beginning of the main body of graduation thesis. The introduction should include: the background and purpose of graduation thesis; Research status at home and abroad and existing research results in related fields; Research methods, research results and conclusions. Preface is the beginning of an argumentative paper, that is, to ask questions and clarify the central argument, so that readers can have a general understanding of the content of the article and attract attention. Common preface writing methods are as follows: a.

State your views and opinions directly and put forward the central argument B.

Explain the background, the purpose and reason of writing. C

Prompt content, briefly introduce the full text d

Asking questions about things makes people think of e.

Starting from the phenomenon of daily life. F

Quote classics and tell ancient and modern stories.