Introduction refers to the short sentence that leads to the main title before the main title, before the main title;

The main title refers to the title of the article, which is used to put forward the center or theme of the article;

The title of an argumentative paper directly reveals the argument, such as "opposing liberalism", or reveals the content of the article, such as "three major disciplines and eight points for attention" The narrative title is implicit and symbolic, such as "How do peach blossoms bloom?" "Or people, time, place, etc. Such as the title, such as "Three Days on the Yangtze River". The titles of official documents are mostly composed of three parts: issuing unit, cause and language. Such as "Decision on Commending Heroes and Teenagers".

Subtitle refers to the text used to explain the theme, followed by the main title, and more often it points out the time and place.

For example, "The Important Task Faced by Civilized Cities-Harbin: How Far Is It from the National Civilized City-Investigation and Reflection on Building a National Civilized City in Our City". Decomposition: "An important issue facing civilized cities-"This is the "introduction". "Harbin: How far is it from the national civilized city" is a "topic" or "main title". "-Investigation and Reflection on Building a National Civilized City in Zhuhai" is a subtitle or subtitle. The function of "subtitle" is to extend the main content of the article to the front, so that readers can appreciate the general content of the article in the shortest time.