could entertain
Verbo regular: entertain - entertained- entertained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could entertain
you could entertain
he could entertain
we could entertain
you could entertain
they could entertain 	I could be entertaining
you could be entertaining
he could be entertaining
we could be entertaining
you could be entertaining
they could be entertaining	I could have entertained
you could have entertained
he could have entertained
we could have entertained
you could have entertained
they could have entertained	I could have been entertaining
you could have been entertaining
he could have been entertaining
we could have been entertaining
you could have been entertaining
they could have been entertaining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not entertain
you could not entertain
he could not entertain
we could not entertain
you could not entertain
they could not entertain 	I could not be entertaining
you could not be entertaining
he could not be entertaining
we could not be entertaining
you could not be entertaining
they could not be entertaining	I could not have entertained
you could not have entertained
he could not have entertained
we could not have entertained
you could not have entertained
they could not have entertained	I could not have been entertaining
you could not have been entertaining
he could not have been entertaining
we could not have been entertaining
you could not have been entertaining
they could not have been entertaining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I entertain?
could you entertain?
could he entertain?
could we entertain?
could you entertain?
could they entertain? 	could I be entertaining?
could you be entertaining?
could he be entertaining?
could we be entertaining?
could you be entertaining?
could they be entertaining? 	could I have entertained?
could you have entertained?
could he have entertained?
could we have entertained?
could you have entertained?
could they have entertained? 	could I have been entertaining?
could you have been entertaining?
could he have been entertaining?
could we have been entertaining?
could you have been entertaining?
could they have been entertaining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not entertain?
could you not entertain?
could he not entertain?
could we not entertain?
could you not entertain?
could they not entertain? 	could I not be entertaining?
could you not be entertaining?
could he not be entertaining?
could we not be entertaining?
could you not be entertaining?
could they not be entertaining? 	could I not have entertained?
could you not have entertained?
could he not have entertained?
could we not have entertained?
could you not have entertained?
could they not have entertained? 	could I not have been entertaining?
could you not have been entertaining?
could he not have been entertaining?
could we not have been entertaining?
could you not have been entertaining?
could they not have been entertaining?