I could aid you could aid she could aid we could aid you could aid they could aid
Forma con V-ing
I could be aiding you could be aiding she could be aiding we could be aiding you could be aiding they could be aiding
Perfecto
I could have aided you could have aided she could have aided we could have aided you could have aided they could have aided
Perfecto con V-ing
I could have been aiding you could have been aiding she could have been aiding we could have been aiding you could have been aiding they could have been aiding
Negación
Forma simple
I couldn't aid you couldn't aid she couldn't aid we couldn't aid you couldn't aid they couldn't aid
Forma con V-ing
I couldn't be aiding you couldn't be aiding she couldn't be aiding we couldn't be aiding you couldn't be aiding they couldn't be aiding
Perfecto
I couldn't have aided you couldn't have aided she couldn't have aided we couldn't have aided you couldn't have aided they couldn't have aided
Perfecto con V-ing
I couldn't have been aiding you couldn't have been aiding she couldn't have been aiding we couldn't have been aiding you couldn't have been aiding they couldn't have been aiding
Forma interrogativa
Forma simple
could I aid? could you aid? could she aid? could we aid? could you aid? could they aid?
Forma con V-ing
could I be aiding? could you be aiding? could she be aiding? could we be aiding? could you be aiding? could they be aiding?
Perfecto
could I have aided? could you have aided? could she have aided? could we have aided? could you have aided? could they have aided?
Perfecto con V-ing
could I have been aiding? could you have been aiding? could she have been aiding? could we have been aiding? could you have been aiding? could they have been aiding?
Forma interro-negativa
Forma simple
couldn't I aid? couldn't you aid? couldn't she aid? couldn't we aid? couldn't you aid? couldn't they aid?
Forma con V-ing
couldn't I be aiding? couldn't you be aiding? couldn't she be aiding? couldn't we be aiding? couldn't you be aiding? couldn't they be aiding?
Perfecto
couldn't I have aided? couldn't you have aided? couldn't she have aided? couldn't we have aided? couldn't you have aided? couldn't they have aided?
Perfecto con V-ing
couldn't I have been aiding? couldn't you have been aiding? couldn't she have been aiding? couldn't we have been aiding? couldn't you have been aiding? couldn't they have been aiding?