I could curl you could curl he could curl we could curl you could curl they could curl
Forma con V-ing
I could be curling you could be curling he could be curling we could be curling you could be curling they could be curling
Perfecto
I could have curled you could have curled he could have curled we could have curled you could have curled they could have curled
Perfecto con V-ing
I could have been curling you could have been curling he could have been curling we could have been curling you could have been curling they could have been curling
Negación
Forma simple
I couldn't curl you couldn't curl he couldn't curl we couldn't curl you couldn't curl they couldn't curl
Forma con V-ing
I couldn't be curling you couldn't be curling he couldn't be curling we couldn't be curling you couldn't be curling they couldn't be curling
Perfecto
I couldn't have curled you couldn't have curled he couldn't have curled we couldn't have curled you couldn't have curled they couldn't have curled
Perfecto con V-ing
I couldn't have been curling you couldn't have been curling he couldn't have been curling we couldn't have been curling you couldn't have been curling they couldn't have been curling
Forma interrogativa
Forma simple
could I curl? could you curl? could he curl? could we curl? could you curl? could they curl?
Forma con V-ing
could I be curling? could you be curling? could he be curling? could we be curling? could you be curling? could they be curling?
Perfecto
could I have curled? could you have curled? could he have curled? could we have curled? could you have curled? could they have curled?
Perfecto con V-ing
could I have been curling? could you have been curling? could he have been curling? could we have been curling? could you have been curling? could they have been curling?
Forma interro-negativa
Forma simple
couldn't I curl? couldn't you curl? couldn't he curl? couldn't we curl? couldn't you curl? couldn't they curl?
Forma con V-ing
couldn't I be curling? couldn't you be curling? couldn't he be curling? couldn't we be curling? couldn't you be curling? couldn't they be curling?
Perfecto
couldn't I have curled? couldn't you have curled? couldn't he have curled? couldn't we have curled? couldn't you have curled? couldn't they have curled?
Perfecto con V-ing
couldn't I have been curling? couldn't you have been curling? couldn't he have been curling? couldn't we have been curling? couldn't you have been curling? couldn't they have been curling?