I can do you can do he can do we can do you can do they can do
Forma com V-ing
I can be doing you can be doing he can be doing we can be doing you can be doing they can be doing
Perfeito
I can have done you can have done he can have done we can have done you can have done they can have done
Perfeito com V-ing
I can have been doing you can have been doing he can have been doing we can have been doing you can have been doing they can have been doing
Negação
Forma simple
I cannot do you cannot do he cannot do we cannot do you cannot do they cannot do
Forma com V-ing
I cannot be doing you cannot be doing he cannot be doing we cannot be doing you cannot be doing they cannot be doing
Perfeito
I cannot have done you cannot have done he cannot have done we cannot have done you cannot have done they cannot have done
Perfeito com V-ing
I cannot have been doing you cannot have been doing he cannot have been doing we cannot have been doing you cannot have been doing they cannot have been doing
Forma interrogativa
Forma simple
can I do? can you do? can he do? can we do? can you do? can they do?
Forma com V-ing
can I be doing? can you be doing? can he be doing? can we be doing? can you be doing? can they be doing?
Perfeito
can I have done? can you have done? can he have done? can we have done? can you have done? can they have done?
Perfeito com V-ing
can I have been doing? can you have been doing? can he have been doing? can we have been doing? can you have been doing? can they have been doing?
Forma interro-Negação
Forma simple
can I not do? can you not do? can he not do? can we not do? can you not do? can they not do?
Forma com V-ing
can I not be doing? can you not be doing? can he not be doing? can we not be doing? can you not be doing? can they not be doing?
Perfeito
can I not have done? can you not have done? can he not have done? can we not have done? can you not have done? can they not have done?
Perfeito com V-ing
can I not have been doing? can you not have been doing? can he not have been doing? can we not have been doing? can you not have been doing? can they not have been doing?