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