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