I could chatter you could chatter she could chatter we could chatter you could chatter they could chatter
Forma com V-ing
I could be chattering you could be chattering she could be chattering we could be chattering you could be chattering they could be chattering
Perfeito
I could have chattered you could have chattered she could have chattered we could have chattered you could have chattered they could have chattered
Perfeito com V-ing
I could have been chattering you could have been chattering she could have been chattering we could have been chattering you could have been chattering they could have been chattering
Negação
Forma simple
I could not chatter you could not chatter she could not chatter we could not chatter you could not chatter they could not chatter
Forma com V-ing
I could not be chattering you could not be chattering she could not be chattering we could not be chattering you could not be chattering they could not be chattering
Perfeito
I could not have chattered you could not have chattered she could not have chattered we could not have chattered you could not have chattered they could not have chattered
Perfeito com V-ing
I could not have been chattering you could not have been chattering she could not have been chattering we could not have been chattering you could not have been chattering they could not have been chattering
Forma interrogativa
Forma simple
could I chatter? could you chatter? could she chatter? could we chatter? could you chatter? could they chatter?
Forma com V-ing
could I be chattering? could you be chattering? could she be chattering? could we be chattering? could you be chattering? could they be chattering?
Perfeito
could I have chattered? could you have chattered? could she have chattered? could we have chattered? could you have chattered? could they have chattered?
Perfeito com V-ing
could I have been chattering? could you have been chattering? could she have been chattering? could we have been chattering? could you have been chattering? could they have been chattering?
Forma interro-Negação
Forma simple
could I not chatter? could you not chatter? could she not chatter? could we not chatter? could you not chatter? could they not chatter?
Forma com V-ing
could I not be chattering? could you not be chattering? could she not be chattering? could we not be chattering? could you not be chattering? could they not be chattering?
Perfeito
could I not have chattered? could you not have chattered? could she not have chattered? could we not have chattered? could you not have chattered? could they not have chattered?
Perfeito com V-ing
could I not have been chattering? could you not have been chattering? could she not have been chattering? could we not have been chattering? could you not have been chattering? could they not have been chattering?