In the reading of argumentative essays for the senior high school entrance examination, there is a kind of question about the function and argumentation method of the examination. When expressing the function of argumentation methods, it is often necessary to summarize the arguments (especially the factual arguments). How to accurately purify the backbone of factual arguments and clarify the rationale behind the arguments is a place that students often ignore and make mistakes easily. Solving this problem can not only improve the score of this problem, but also make students clear about the relationship between materials and opinions, thus improving the reading comprehension ability of argumentative papers. So, how can we accurately summarize the factual arguments? The first is to clarify two forms of factual argumentation in argumentative essays: phenomena in life, such as: ① "Not all of them change common words, especially idioms at will, and many advertisements attract people's attention through the transformation of' defamiliarization', which is a very bad phenomenon." ② "In my twenties and thirties, I am already reminiscing about the past, which seems to be a' common disease' among young people in contemporary China." ③2 1 century, more than 80% of the "post-90s" in China are "moonlight clan" or "neet clan" ... This kind of factual evidence from life phenomenon often takes a group as the behavior subject and is popular in a wider social scope, which will bring far-reaching influence to society after a long time. The second kind: events in life, such as: "Qian Zhongshu is well-read." ........