Conjugación del verbo inglés
COULD EXCUSE

Verbo regular: excuse - excused - excused

Afirmación

Forma simple	Forma con V-ing
I could excuse you could excuse he could excuse we could excuse you could excuse they could excuse	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	Perfecto con V-ing
I could have excused you could have excused he could have excused we could have excused you could have excused they could have excused	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	Forma con V-ing
I could not excuse you could not excuse he could not excuse we could not excuse you could not excuse they could not excuse	I could not be excusing you could not be excusing he could not be excusing we could not be excusing you could not be excusing they could not be excusing
Perfecto	Perfecto con V-ing
I could not have excused you could not have excused he could not have excused we could not have excused you could not have excused they could not have excused	I could not have been excusing you could not have been excusing he could not have been excusing we could not have been excusing you could not have been excusing they could not have been excusing

Forma interrogativa

Forma simple	Forma con V-ing
could I excuse? could you excuse? could he excuse? could we excuse? could you excuse? could they excuse?	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	Perfecto con V-ing
could I have excused? could you have excused? could he have excused? could we have excused? could you have excused? could they have excused?	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	Forma con V-ing
could I not excuse? could you not excuse? could he not excuse? could we not excuse? could you not excuse? could they not excuse?	could I not be excusing? could you not be excusing? could he not be excusing? could we not be excusing? could you not be excusing? could they not be excusing?
Perfecto	Perfecto con V-ing
could I not have excused? could you not have excused? could he not have excused? could we not have excused? could you not have excused? could they not have excused?	could I not have been excusing? could you not have been excusing? could he not have been excusing? could we not have been excusing? could you not have been excusing? could they not have been excusing?