I can prolong you can prolong he can prolong we can prolong you can prolong they can prolong
Forma com V-ing
I can be prolonging you can be prolonging he can be prolonging we can be prolonging you can be prolonging they can be prolonging
Perfeito
I can have prolonged you can have prolonged he can have prolonged we can have prolonged you can have prolonged they can have prolonged
Perfeito com V-ing
I can have been prolonging you can have been prolonging he can have been prolonging we can have been prolonging you can have been prolonging they can have been prolonging
Negação
Forma simple
I cannot prolong you cannot prolong he cannot prolong we cannot prolong you cannot prolong they cannot prolong
Forma com V-ing
I cannot be prolonging you cannot be prolonging he cannot be prolonging we cannot be prolonging you cannot be prolonging they cannot be prolonging
Perfeito
I cannot have prolonged you cannot have prolonged he cannot have prolonged we cannot have prolonged you cannot have prolonged they cannot have prolonged
Perfeito com V-ing
I cannot have been prolonging you cannot have been prolonging he cannot have been prolonging we cannot have been prolonging you cannot have been prolonging they cannot have been prolonging
Forma interrogativa
Forma simple
can I prolong? can you prolong? can he prolong? can we prolong? can you prolong? can they prolong?
Forma com V-ing
can I be prolonging? can you be prolonging? can he be prolonging? can we be prolonging? can you be prolonging? can they be prolonging?
Perfeito
can I have prolonged? can you have prolonged? can he have prolonged? can we have prolonged? can you have prolonged? can they have prolonged?
Perfeito com V-ing
can I have been prolonging? can you have been prolonging? can he have been prolonging? can we have been prolonging? can you have been prolonging? can they have been prolonging?
Forma interro-Negação
Forma simple
can I not prolong? can you not prolong? can he not prolong? can we not prolong? can you not prolong? can they not prolong?
Forma com V-ing
can I not be prolonging? can you not be prolonging? can he not be prolonging? can we not be prolonging? can you not be prolonging? can they not be prolonging?
Perfeito
can I not have prolonged? can you not have prolonged? can he not have prolonged? can we not have prolonged? can you not have prolonged? can they not have prolonged?
Perfeito com V-ing
can I not have been prolonging? can you not have been prolonging? can he not have been prolonging? can we not have been prolonging? can you not have been prolonging? can they not have been prolonging?