The ideas of Discourse Communities, Genres, and Rhetoric make sense to me, and they’re useful concepts, because after I learn about those, I could understand other people’s Discourse Communities, and then I can better assimilate into their talking. Also, I know about there is much type of genres for our writing, and different types of genre have different advantage for writers. such as informative genre is specific describe the information to readers. I have thought about them before when I took high school, at that time, my English teacher teach us about using persuasion to write your argument, it will make audience trust your opinion. Also, you want to make the piece emotional and leave the reader heartbroken or shocked in a way.