I could shiver you could shiver he could shiver we could shiver you could shiver they could shiver
Forma com V-ing
I could be shivering you could be shivering he could be shivering we could be shivering you could be shivering they could be shivering
Perfeito
I could have shivered you could have shivered he could have shivered we could have shivered you could have shivered they could have shivered
Perfeito com V-ing
I could have been shivering you could have been shivering he could have been shivering we could have been shivering you could have been shivering they could have been shivering
Negação
Forma simple
I could not shiver you could not shiver he could not shiver we could not shiver you could not shiver they could not shiver
Forma com V-ing
I could not be shivering you could not be shivering he could not be shivering we could not be shivering you could not be shivering they could not be shivering
Perfeito
I could not have shivered you could not have shivered he could not have shivered we could not have shivered you could not have shivered they could not have shivered
Perfeito com V-ing
I could not have been shivering you could not have been shivering he could not have been shivering we could not have been shivering you could not have been shivering they could not have been shivering
Forma interrogativa
Forma simple
could I shiver? could you shiver? could he shiver? could we shiver? could you shiver? could they shiver?
Forma com V-ing
could I be shivering? could you be shivering? could he be shivering? could we be shivering? could you be shivering? could they be shivering?
Perfeito
could I have shivered? could you have shivered? could he have shivered? could we have shivered? could you have shivered? could they have shivered?
Perfeito com V-ing
could I have been shivering? could you have been shivering? could he have been shivering? could we have been shivering? could you have been shivering? could they have been shivering?
Forma interro-Negação
Forma simple
could I not shiver? could you not shiver? could he not shiver? could we not shiver? could you not shiver? could they not shiver?
Forma com V-ing
could I not be shivering? could you not be shivering? could he not be shivering? could we not be shivering? could you not be shivering? could they not be shivering?
Perfeito
could I not have shivered? could you not have shivered? could he not have shivered? could we not have shivered? could you not have shivered? could they not have shivered?
Perfeito com V-ing
could I not have been shivering? could you not have been shivering? could he not have been shivering? could we not have been shivering? could you not have been shivering? could they not have been shivering?