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