Argument is the material to support the argument and the reason and basis used by the author to prove the argument, which can be divided into factual argument and theoretical argument.

1. factual argument: the role of facts in argumentative writing is very obvious. Analyze the facts, see the truth clearly, and check whether it is consistent with the logic of the article. Representative examples, conclusive data, reliable historical facts, etc. Factual arguments include examples and data.

2. Theoretical argument: The theory as an argument is always familiar to readers or generally recognized by the society, and it is the result of abstracting and summarizing a large number of facts. Theoretical arguments include famous aphorisms, proverbs and aphorisms, and the author's reasoning analysis.

Requirements for using arguments: ① certainty. We must choose those hard and typical facts. When citing theoretical materials that have been tested by practice as arguments, we must pay attention to the exact meaning of the cited theory itself. ② Typical. The cited examples should be widely representative, representing the general characteristics and properties of such things. (3) the unity of arguments and arguments. The argument is to prove the argument, so the connection between the two should be closely consistent.