Use commas where you need to pause in a sentence.

Comma (",") is a common punctuation mark, which may be used countless times in an article. However, its most common usage should be to separate appositives-that is, to separate sentences and add complements to the subject.

Extended data:

structure

A paper generally consists of title, author, abstract, keywords, text, references and appendices, some of which (such as appendices) are dispensable.

Title of paper

Requirements are accurate, concise, eye-catching and novel.

catalogue

A table of contents is a short list of main paragraphs in a paper. (Essays don't need to be listed in the table of contents)

abstract

It is an excerpt from the main content of the article, which requires short and concise content.

Keyword definition

Keywords are selected from the title, abstract and text of the paper, which are words with substantial meaning to express the central content of the paper. Keywords are words used by computer systems to index the content characteristics of papers, which are convenient for information systems to collect and provide readers with retrieval. Generally, 3-8 words are selected as keywords for each paper, and a new line is set at the bottom left of the "abstract".

Subject words are standard words. When determining the subject words, we should analyze the theme of the paper and convert it into standard words in the thesaurus according to the rules of indexing and collocation. (See Chinese Thesaurus and World Chinese Thesaurus).