Afirmativa: I am romantic.
Interrogativa: Am I romantic?
Negativa: I am not romantic.
Afirmativa: She is washing the dishes.
Interrogativa: Is she washing the dishes?
Negativa: She isn't (or is not) washing the dishes.
Afirmativa: They are in the bedroom.
Interrogativa: Are they in the bedroom?
Negativa: They aren't in the bedroom.