Western literary theory mainly focused on human behavior, social structure, cultural differences, and human thinking. When commenting on a work, one could analyze and evaluate it according to some basic principles of Western literary theory. For example: 1. Understanding the theme and plot: Western literary theory believes that the theme and plot of a work are the core of the work. The meaning of the work should be understood by analyzing the theme and plot of the work. You can analyze the theme and plot of the work by reading the work itself and related literature. 2. Analysis of characters and characters: characters and characters are one of the most important components of a work. The relationship between the characters and the development of the plot should be understood by analyzing the behavior, thoughts, and emotions of the characters and characters. You can analyze the characters by reading the works and relevant literature. 3. Language and style: Language and style are important components of a work. You should understand the style and characteristics of the work by analyzing the language and style of the work. You can analyze the language and style of the work by reading the work and relevant literature. 4. Consider the cultural and historical background: The background and historical background of the work are also important components of the work. We should understand the meaning and extension of the work by analyzing the cultural and historical background of the work. You can analyze the background and historical background of the work by reading the work and relevant literature. To sum up, Western literary theory provides a method and framework for analyzing and evaluating literary works. According to these principles, we can comment and analyze literary works to better understand and appreciate literary works.