In order to make a good speech, it is often necessary to write a speech. The sociality, practicality, philosophy, militancy and encouragement of speech activities all determine the basic characteristics of this speech style: discussion as the main means, supplemented by lyric, narrative, description and explanation. In this way, the speech is an argumentative paper, which can be prose, essay, essay and so on.
As a style with discussion as the main means, let's call it "argumentative essay", a stylistic concept used in teaching. The basic logical structure of argumentative writing is: introduction, theory and conclusion. Among them, the core is the theory of origin, that is, the part of analysis and reasoning (argumentation). There are many methods of analysis and reasoning (argumentation), among which the most common method is quotation-quoting famous sayings and expert opinions as arguments to prove one's point of view.
It should be noted that citation refers to classic quotations, common sense of life, conventional market remarks and so on. Are opinions, not stories and events. If it is a story or an event, it is not an introduction method, but an example model method.