2. Literature review body: It is the main content of literature review, including history (seeking the development process of research problems), present situation, basic content (seeking the progress of understanding), analysis of research methods (seeking the reference of research methods), solved problems and remaining problems, and emphatically and in detail expounds the current influence and development trend, which not only enables researchers to determine the research direction, but also facilitates others to understand the starting point and breakthrough point of this study.
3. The conclusion of literature review: the conclusion of literature research, summarizing my own research viewpoints, existing different opinions and problems to be solved, etc. ;
4. Appendix to Literature Review: List the references and explain the materials on which the literature review is based, so as to increase the credibility of the review and facilitate readers' further retrieval.