could serenade
Verbo regular: serenade - serenaded- serenaded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could serenade
you could serenade
he could serenade
we could serenade
you could serenade
they could serenade 	I could be serenading
you could be serenading
he could be serenading
we could be serenading
you could be serenading
they could be serenading	I could have serenaded
you could have serenaded
he could have serenaded
we could have serenaded
you could have serenaded
they could have serenaded	I could have been serenading
you could have been serenading
he could have been serenading
we could have been serenading
you could have been serenading
they could have been serenading	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not serenade
you could not serenade
he could not serenade
we could not serenade
you could not serenade
they could not serenade 	I could not be serenading
you could not be serenading
he could not be serenading
we could not be serenading
you could not be serenading
they could not be serenading	I could not have serenaded
you could not have serenaded
he could not have serenaded
we could not have serenaded
you could not have serenaded
they could not have serenaded	I could not have been serenading
you could not have been serenading
he could not have been serenading
we could not have been serenading
you could not have been serenading
they could not have been serenading	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I serenade?
could you serenade?
could he serenade?
could we serenade?
could you serenade?
could they serenade? 	could I be serenading?
could you be serenading?
could he be serenading?
could we be serenading?
could you be serenading?
could they be serenading? 	could I have serenaded?
could you have serenaded?
could he have serenaded?
could we have serenaded?
could you have serenaded?
could they have serenaded? 	could I have been serenading?
could you have been serenading?
could he have been serenading?
could we have been serenading?
could you have been serenading?
could they have been serenading? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not serenade?
could you not serenade?
could he not serenade?
could we not serenade?
could you not serenade?
could they not serenade? 	could I not be serenading?
could you not be serenading?
could he not be serenading?
could we not be serenading?
could you not be serenading?
could they not be serenading? 	could I not have serenaded?
could you not have serenaded?
could he not have serenaded?
could we not have serenaded?
could you not have serenaded?
could they not have serenaded? 	could I not have been serenading?
could you not have been serenading?
could he not have been serenading?
could we not have been serenading?
could you not have been serenading?
could they not have been serenading?