When my class was almost finished, I had a question.  = no mistakes; very good!

So, I told my teacher "Do me a favor?".  = So, I asked my teacher, "Do me a favor?"

But i think she didn't catch that. = no mistakes

So my teacher said to me "Have a nice day". = So my teacher said, "Have a nice day."

Hm...What's the matter ? what's wrong with me? = Hm...What was wrong? What's wrong with me?

During this class my teacher didn't understand what i was saying. = During the class my teacher didn't understand what I was saying.

I guess my pronunciation is suck... = I guess my pronunciation suck.

Theacher, Please correct my pronunciation when you don't catch that well. = Teacher, please correct my pronunciation when I don't get it correctly.