The document summarizes the common uses of commas in English writing in 3-4 sentences each. It covers using commas to separate elements of a series, separate independent clauses joined by a conjunction, set off introductory elements, separate coordinate adjectives, set off contrasting or turning elements, set off states, countries, years, titles, parenthetical elements, quoted language, and interjections. The concluding slide advises not overusing commas and reviewing the rules of comma usage to improve writing skills.