It is in argumentative writing that arguments are the basis for supporting and proving arguments. The factual arguments are historical facts, typical cases and statistical data. To supplement factual arguments is to add some words in the above ways to the article to support your argument.

We should pay attention to two problems when supplementing the argument: first, the argument should be able to effectively prove the argument; Second, the supplementary facts should be concise, and the narrative process should bring words related to the topic or argument, highlighting the relationship between the argument and the argument. Third, pay attention to the fact that the supplementary argument needs to be formed with the original argument of the article, and prove the argument from different sides, angles and levels. Some typical cases, due to different emphasis, give others different feelings.