1. writing purpose: the purpose of argumentative writing is to explain the author's views, opinions or propositions, and to prove or explain some views or facts through logical reasoning and discussion. The purpose of argumentative writing is to evaluate and determine the correctness or rationality of a problem or viewpoint through argumentation and debate, including solutions.

2. Structure: The structure of argumentative paper includes introduction, text and conclusion. This text includes several paragraphs, each with its own theme. The theme is supported by elaboration, analysis and reasoning. The structure of argumentative paper includes introduction, text and conclusion. In an argumentative essay, the author needs to demonstrate his point of view from different angles, facts and viewpoints, and evaluate all kinds of evidence and arguments.