1. Outline: Before you start writing, make a detailed outline, and list the topics and sub-topics you want to discuss, and the logical relationship between them. This will help you keep the structure of your paper clear and ensure that your views are consistent.
2. Use transitional words and phrases: Transitional words and phrases can help you establish logical connections between paragraphs and make your paper read more smoothly. Words such as "however", "on the other hand" and "therefore" can help you guide readers to transition from one point of view to another.
3. Keep consistent tone and tense: You should keep consistent tone and tense throughout the article. If you use the past tense in one part of your paper, you should also use the past tense in other parts.
4. Carefully review and edit: After completing the first draft, you should take the time to carefully review and edit your paper to ensure that all information is accurate and relevant, all arguments are logically coherent, and all paragraphs are clearly structured.
5. Seek feedback from others: If possible, you can let others read your paper and provide feedback. They may find logical loopholes or structural problems that you didn't notice.
6. Use charts and illustrations: If applicable, you can use charts and illustrations to help explain complex concepts or data, which can make your paper more readable and understandable.
Generally speaking, it takes time and energy to ensure the logical coherence and clear structure of the paper, but it is a key step to improve the quality of the paper.