I can retard you can retard he can retard we can retard you can retard they can retard
Forma com V-ing
I can be retarding you can be retarding he can be retarding we can be retarding you can be retarding they can be retarding
Perfeito
I can have retarded you can have retarded he can have retarded we can have retarded you can have retarded they can have retarded
Perfeito com V-ing
I can have been retarding you can have been retarding he can have been retarding we can have been retarding you can have been retarding they can have been retarding
Negação
Forma simple
I cannot retard you cannot retard he cannot retard we cannot retard you cannot retard they cannot retard
Forma com V-ing
I cannot be retarding you cannot be retarding he cannot be retarding we cannot be retarding you cannot be retarding they cannot be retarding
Perfeito
I cannot have retarded you cannot have retarded he cannot have retarded we cannot have retarded you cannot have retarded they cannot have retarded
Perfeito com V-ing
I cannot have been retarding you cannot have been retarding he cannot have been retarding we cannot have been retarding you cannot have been retarding they cannot have been retarding
Forma interrogativa
Forma simple
can I retard? can you retard? can he retard? can we retard? can you retard? can they retard?
Forma com V-ing
can I be retarding? can you be retarding? can he be retarding? can we be retarding? can you be retarding? can they be retarding?
Perfeito
can I have retarded? can you have retarded? can he have retarded? can we have retarded? can you have retarded? can they have retarded?
Perfeito com V-ing
can I have been retarding? can you have been retarding? can he have been retarding? can we have been retarding? can you have been retarding? can they have been retarding?
Forma interro-Negação
Forma simple
can I not retard? can you not retard? can he not retard? can we not retard? can you not retard? can they not retard?
Forma com V-ing
can I not be retarding? can you not be retarding? can he not be retarding? can we not be retarding? can you not be retarding? can they not be retarding?
Perfeito
can I not have retarded? can you not have retarded? can he not have retarded? can we not have retarded? can you not have retarded? can they not have retarded?
Perfeito com V-ing
can I not have been retarding? can you not have been retarding? can he not have been retarding? can we not have been retarding? can you not have been retarding? can they not have been retarding?