I can ring you can ring he can ring we can ring you can ring they can ring
Forma com V-ing
I can be ringing you can be ringing he can be ringing we can be ringing you can be ringing they can be ringing
Perfeito
I can have rung you can have rung he can have rung we can have rung you can have rung they can have rung
Perfeito com V-ing
I can have been ringing you can have been ringing he can have been ringing we can have been ringing you can have been ringing they can have been ringing
Negação
Forma simple
I cannot ring you cannot ring he cannot ring we cannot ring you cannot ring they cannot ring
Forma com V-ing
I cannot be ringing you cannot be ringing he cannot be ringing we cannot be ringing you cannot be ringing they cannot be ringing
Perfeito
I cannot have rung you cannot have rung he cannot have rung we cannot have rung you cannot have rung they cannot have rung
Perfeito com V-ing
I cannot have been ringing you cannot have been ringing he cannot have been ringing we cannot have been ringing you cannot have been ringing they cannot have been ringing
Forma interrogativa
Forma simple
can I ring? can you ring? can he ring? can we ring? can you ring? can they ring?
Forma com V-ing
can I be ringing? can you be ringing? can he be ringing? can we be ringing? can you be ringing? can they be ringing?
Perfeito
can I have rung? can you have rung? can he have rung? can we have rung? can you have rung? can they have rung?
Perfeito com V-ing
can I have been ringing? can you have been ringing? can he have been ringing? can we have been ringing? can you have been ringing? can they have been ringing?
Forma interro-Negação
Forma simple
can I not ring? can you not ring? can he not ring? can we not ring? can you not ring? can they not ring?
Forma com V-ing
can I not be ringing? can you not be ringing? can he not be ringing? can we not be ringing? can you not be ringing? can they not be ringing?
Perfeito
can I not have rung? can you not have rung? can he not have rung? can we not have rung? can you not have rung? can they not have rung?
Perfeito com V-ing
can I not have been ringing? can you not have been ringing? can he not have been ringing? can we not have been ringing? can you not have been ringing? can they not have been ringing?