I can prefix you can prefix he can prefix we can prefix you can prefix they can prefix
Forma com V-ing
I can be prefixing you can be prefixing he can be prefixing we can be prefixing you can be prefixing they can be prefixing
Perfeito
I can have prefixed you can have prefixed he can have prefixed we can have prefixed you can have prefixed they can have prefixed
Perfeito com V-ing
I can have been prefixing you can have been prefixing he can have been prefixing we can have been prefixing you can have been prefixing they can have been prefixing
Negação
Forma simple
I cannot prefix you cannot prefix he cannot prefix we cannot prefix you cannot prefix they cannot prefix
Forma com V-ing
I cannot be prefixing you cannot be prefixing he cannot be prefixing we cannot be prefixing you cannot be prefixing they cannot be prefixing
Perfeito
I cannot have prefixed you cannot have prefixed he cannot have prefixed we cannot have prefixed you cannot have prefixed they cannot have prefixed
Perfeito com V-ing
I cannot have been prefixing you cannot have been prefixing he cannot have been prefixing we cannot have been prefixing you cannot have been prefixing they cannot have been prefixing
Forma interrogativa
Forma simple
can I prefix? can you prefix? can he prefix? can we prefix? can you prefix? can they prefix?
Forma com V-ing
can I be prefixing? can you be prefixing? can he be prefixing? can we be prefixing? can you be prefixing? can they be prefixing?
Perfeito
can I have prefixed? can you have prefixed? can he have prefixed? can we have prefixed? can you have prefixed? can they have prefixed?
Perfeito com V-ing
can I have been prefixing? can you have been prefixing? can he have been prefixing? can we have been prefixing? can you have been prefixing? can they have been prefixing?
Forma interro-Negação
Forma simple
can I not prefix? can you not prefix? can he not prefix? can we not prefix? can you not prefix? can they not prefix?
Forma com V-ing
can I not be prefixing? can you not be prefixing? can he not be prefixing? can we not be prefixing? can you not be prefixing? can they not be prefixing?
Perfeito
can I not have prefixed? can you not have prefixed? can he not have prefixed? can we not have prefixed? can you not have prefixed? can they not have prefixed?
Perfeito com V-ing
can I not have been prefixing? can you not have been prefixing? can he not have been prefixing? can we not have been prefixing? can you not have been prefixing? can they not have been prefixing?