1, vertical structure: organizing materials according to three parts: introduction, topic and conclusion, which is called vertical structure. Generally, it is arranged in the logical order of asking questions, analyzing problems and solving problems. Also known as three-stage structure.

2. Parallel structure: around the central argument, it is demonstrated from different angles, forming a number of sub-arguments, which constitute a parallel relationship, * * * and the central argument of the argument, which is the parallel structure of the argumentative paper.

3. Progressive structure: when expounding the central argument, the relationship between all levels and paragraphs is interlocking and deepening step by step. The former part is the basis of the latter part, and finally draws the conclusion of the article.

4. Contrastive structural model: This is a structural model that combines positive and negative views, examples and backchat to form a strong contrast, which makes two different things clearer in comparison, thus more effectively highlighting positive arguments and propositions.

In argumentative writing, the above structural models are often used alternately, and generally one structural model is the main one, supplemented by other models. In this way, the style of writing can be varied and the articles will not be chaotic.

The importance of composition

Composition is a style, a way to express feelings and a literary form, which can express the author's thoughts, feelings and emotions. The importance of composition is self-evident. It is not only an important part of learning Chinese, but also an important means of learning Chinese.

First of all, writing can improve students' Chinese literacy. Composition is a literary form, which can help students better understand Chinese, better master Chinese knowledge and better master Chinese skills, thus improving students' Chinese literacy.

Secondly, writing can improve students' thinking ability. Writing is a kind of thinking activity, which can help students think, analyze and solve problems better, thus improving their thinking ability.

Third, writing can improve students' expressive ability. Composition is a way to express ideas, which can help students better express their thoughts, feelings and emotions, thus improving their expressive ability.