I can tack you can tack she can tack we can tack you can tack they can tack
Forma com V-ing
I can be tacking you can be tacking she can be tacking we can be tacking you can be tacking they can be tacking
Perfeito
I can have tacked you can have tacked she can have tacked we can have tacked you can have tacked they can have tacked
Perfeito com V-ing
I can have been tacking you can have been tacking she can have been tacking we can have been tacking you can have been tacking they can have been tacking
Negação
Forma simple
I cannot tack you cannot tack she cannot tack we cannot tack you cannot tack they cannot tack
Forma com V-ing
I cannot be tacking you cannot be tacking she cannot be tacking we cannot be tacking you cannot be tacking they cannot be tacking
Perfeito
I cannot have tacked you cannot have tacked she cannot have tacked we cannot have tacked you cannot have tacked they cannot have tacked
Perfeito com V-ing
I cannot have been tacking you cannot have been tacking she cannot have been tacking we cannot have been tacking you cannot have been tacking they cannot have been tacking
Forma interrogativa
Forma simple
can I tack? can you tack? can she tack? can we tack? can you tack? can they tack?
Forma com V-ing
can I be tacking? can you be tacking? can she be tacking? can we be tacking? can you be tacking? can they be tacking?
Perfeito
can I have tacked? can you have tacked? can she have tacked? can we have tacked? can you have tacked? can they have tacked?
Perfeito com V-ing
can I have been tacking? can you have been tacking? can she have been tacking? can we have been tacking? can you have been tacking? can they have been tacking?
Forma interro-Negação
Forma simple
can I not tack? can you not tack? can she not tack? can we not tack? can you not tack? can they not tack?
Forma com V-ing
can I not be tacking? can you not be tacking? can she not be tacking? can we not be tacking? can you not be tacking? can they not be tacking?
Perfeito
can I not have tacked? can you not have tacked? can she not have tacked? can we not have tacked? can you not have tacked? can they not have tacked?
Perfeito com V-ing
can I not have been tacking? can you not have been tacking? can she not have been tacking? can we not have been tacking? can you not have been tacking? can they not have been tacking?