三、引言引言是学术论文中比较难的一个部分，它主要包括四个部分的内容，第

3. Introduction The <br>introduction is a difficult part of an academic paper. It mainly includes four parts. The first is the background introduction of writing. This part needs to be concise, not as detailed as possible, but to focus on the most central part. Our arguments are written in the closest context, and be careful not to over-quote. The second is about the purpose or goal of the research. This part is a link between the previous and the next. We must not only summarize the work of the predecessors, but also point out the gaps in knowledge. This is an extremely important part and the most easily overlooked part. The third is about the research methods and theories and the corresponding reasons, the expected results and their status, role and significance in related fields.

Third, the introduction<br>Introduction is a difficult part of the academic paper, it mainly includes four parts of the content, the first is the background of writing, this part needs to be streamlined, not the more detailed the better, to grasp the most central, with our argument closest to the background to write, pay attention not to over-quote. The second is about the purpose or goal of research, this part is a top-down part, we have to sum up the work of the previous people, but also point out the existence of knowledge gaps, which is an important part of it, but also the most easily overlooked part. The third is about the methods and theories of the study and the corresponding reasons, the expected results and their status, role and significance in the relevant fields.

3、 Introduction<br>The introduction is a more difficult part of an academic paper. It mainly includes four parts. The first part is the background of the writing. This part needs to be concise, not more detailed, the better. We should pay attention to the most central and the background closest to our argument, and pay attention not to over quote. The second is about the purpose or goal of the research. This part is a connecting link between the preceding and the following. We should not only summarize the previous work, but also point out the existing knowledge gaps, which is an important part and the most easily overlooked part. The third is about the research methods and theories, the corresponding reasons, the expected results and its status, role and significance in related fields.<br>