1.
Oznajmujące: We've seen this film many times.
Przeczące: We haven't seen this film many times.
Pytające: Have we seen this film many times?
2.
Oznajmujące: Marry is cleaning the windows.
Przeczące: Marry isn't cleaning the windows.
Pytające: Is Marry cleaning the windows?
3.
Oznajmujące: Our parents have known Peter since last year.
Przeczące: Our parents haven't known Peter since last year.
Pytające: Have our parents known Peter since last year?