We should choose a topic from finding out the shortcomings and mistakes of previous studies. Many of the research topics put forward by predecessors have achieved initial research results, but with the continuous development of society, they still need to be enriched, improved and developed. This supplementary or revised research topic also has scientific value and practical guiding significance.

The expression is confused, the basic principle of abstraction is not grasped, the main idea is not refined, the explanation method is vague, and the result is vague, as long as it has nothing to do with the text. The translation level of English abstracts is not high, and most of them are directly translated by translation software, resulting in a large number of grammatical errors. One more thing, it is also a common problem to forget to reflect the text in the abstract after making major revisions under the guidance of the teacher.

There is no logic in the argument of the article, and the argument in the graduation thesis lacks logic, for example, the argument is not clear, which is inconsistent with the selected topic. The viewpoint is the viewpoint and the material is the material. The two can't be integrated, argument doesn't support argument, perceptual knowledge can't be upgraded to rational knowledge through judgment, reasoning and argument, and argument and conclusion can't correspond or even contradict each other.

The writing is not rigorous, and the article should reflect the scientific research ability. The common mistakes are unclear thinking, unclear concept explanation and insufficient definition. In addition, in order to meet the requirements of the full text, there are a large number of references with some materials without their own opinions. The most fatal thing is that there is no connection between before and after, and there is no solution to the problem.