I'm not a dancer-present simple
Continuous в этом предложении нельзя сделать
I haven't been a dancer-present perfect
I wasn't a dancer-past simple
I won't be a dancer-Future Simple
We don't play football-Present Simple
We aren't playing football-Present Continuous
We haven't played football-Present Perfect
We didn't play football-Past Simple
We won't play football-Future Simple