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