Argumentation usually includes two parts: general argument and sub-argument.
1) The summary is written at the beginning of the article, which is the author's views, attitudes and opinions around materials and topics.
2) Sub-arguments are argument components used to support the general argument, and also come from materials.
Argument is the material and foundation to prove the argument.
Argumentative writing is a process of proving arguments with arguments, which should be effective, concise and novel.