Hello everyone I have a question about sentences with wish.
We all know that when both subjects are identical in sentences with wish for the future, would changes to could, but something I am doubtful about is whether can we employ couldn't in these sentences.
For instance we say
A: I wish he would stay --> negative form I wish he wouldn't stay
B: I wish I could stay home, there is a football match on TV --> negative form I wish I ? I hate football...
We can't use couldn't right?
How about in other sentences, can we use couldn't in other examples?
thanks so much