I thought you did really good, you should ask after class.
I just got my grade back on our discussion from last week. She marked me down and I don't know why, I thought I did great!
I marked you down because I noticed you used slang and other inappropriate vocabulary during our discussion. You should always be using proper English in our class.
"We can't assume because a person speaks a certain way that they are automatically bad" (47) or unintelligent, this is just the use of language I was taught.
I heard you talking to your teacher earlier, remember: "Ethnic identity is twin skin to linguistic identity-- I am my language. Until I can take pride in my language, I cannot take pride in myself."(445). Be proud of your use of language.