Next, the blogger will summarize each part:

1 Abstract: Abstract reflects our own research results and generally uses the past tense.

2 Introduction: The research background such as "introduction, background and preface" in the overview usually refers to the widely accepted principles or facts in related disciplines and the importance of the research done. This step usually mainly adopts the present tense.

3 Text: The text is generally a summary of relevant literature. When referring to a research case, use the simple past tense; When referring to more than one study, use the present perfect tense; Introduce this research. This step may include the materials and methods used in the paper investigation, or it may involve sample data, but the main component is to explain the research purpose of the paper. This step usually adopts the simple present tense.

Results: The past tense was used to illustrate the research results. Describe the research results with simple past tense.

Conclusion: This part can use various tenses to emphasize the past research results, and can use the present tense or future tense to express the future research direction or prospect.