Part.1 As we known, gun is a very serious problem in America and some other countries. It kills many people every year, so I have searched three letters to editor from The New York Times, and all of them are talking about guns. The first letter is " Tackling Gun Violence ", the second letter is " Gun Violence and Fear in America ", and the last one is " What Should Be Done About Guns ". Part.2 After I read these three examples, I found some genres from them: " To the editor" at the beginning Date Re"..."(the title of the article) or just "..."(the title of the article) Name of the author Location Individual resume Polite way Real case about gun I detected that these three examples have the following patterns across: " To the editor" at the beginning Date Name of the author Polite way Location Re"..."(the title of the article) or just "..."(the title ...