What is a correct reply to the following question;
"Does everyone speak French as good as you do?"
"Of course no."( or of course not?)
Or in this question;
"Are you disappointed?"
"Of course not/no."
We don't just give you the answers here, so think about this. Instead of saying "Of course no" or "Of course not", imagine that you had to give a complete answer.
Take question 2 for the example.
Q: Are you disappointed?
A: No. Of course I am _____ disappointed.
What would you put in that space? The word "no" or the word "not"? That should give you a clue as to what the correct shorter answer should be.
Fortunately, there are people who just give good answers and I am very grateful to them. Of course I would use 'not', and I thought about this example, but since I am not a native speaker I always need to know that my sentences are 100% correct. I usually ask questions when I can't decide myself whether a statement is right or not. So I am afraid your advice doesn't apply to me.
I am not going to waste my time by going into further details. I will just ask British English speakers not to bother to answer my posts, for I am interested in American English only.
Before this descends into a incredibly rude free-for-all (and having just deleted my own incredibly rude statement), I will close this thread.
I STRONGLY suggest that anyone seeking the good will of those who freely give of their time and attention to use an approach that is entirely different than the one shown here.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.