1, introduction (the reason, significance, scope, title and abstract of the document).

2, the text (generally write the history, present situation, basic content, method analysis, solved or unsolved problems, influence and development trend of the research topic).

3. Conclusion (summarizing my research significance, existing different opinions and problems to be solved).

4. Appendix (for reference, the purpose is to increase the credibility of the review and facilitate further pronunciation retrieval).