I could tone you could tone she could tone we could tone you could tone they could tone
Forma com V-ing
I could be toning you could be toning she could be toning we could be toning you could be toning they could be toning
Perfeito
I could have toned you could have toned she could have toned we could have toned you could have toned they could have toned
Perfeito com V-ing
I could have been toning you could have been toning she could have been toning we could have been toning you could have been toning they could have been toning
Negação
Forma simple
I could not tone you could not tone she could not tone we could not tone you could not tone they could not tone
Forma com V-ing
I could not be toning you could not be toning she could not be toning we could not be toning you could not be toning they could not be toning
Perfeito
I could not have toned you could not have toned she could not have toned we could not have toned you could not have toned they could not have toned
Perfeito com V-ing
I could not have been toning you could not have been toning she could not have been toning we could not have been toning you could not have been toning they could not have been toning
Forma interrogativa
Forma simple
could I tone? could you tone? could she tone? could we tone? could you tone? could they tone?
Forma com V-ing
could I be toning? could you be toning? could she be toning? could we be toning? could you be toning? could they be toning?
Perfeito
could I have toned? could you have toned? could she have toned? could we have toned? could you have toned? could they have toned?
Perfeito com V-ing
could I have been toning? could you have been toning? could she have been toning? could we have been toning? could you have been toning? could they have been toning?
Forma interro-Negação
Forma simple
could I not tone? could you not tone? could she not tone? could we not tone? could you not tone? could they not tone?
Forma com V-ing
could I not be toning? could you not be toning? could she not be toning? could we not be toning? could you not be toning? could they not be toning?
Perfeito
could I not have toned? could you not have toned? could she not have toned? could we not have toned? could you not have toned? could they not have toned?
Perfeito com V-ing
could I not have been toning? could you not have been toning? could she not have been toning? could we not have been toning? could you not have been toning? could they not have been toning?