The second paragraph introduces: the title of the speaker
The main body of the third paragraph: how to cut into the lecture, sort out the outline of the content, summarize and refine the main body and central idea.
The third paragraph means: the atmosphere at the scene+Mandarin that has benefited a lot depends on the situation. Leaders should sum up when they have a summary.
This is the most popular way of writing. Although different people have different ways of writing, it won't change much.
Tell the landlord a clever son, open a university official website casually, and find the same kind of references in the news they wrote.
I hope it will help the landlord.