could frighten
Verbo regular: frighten - frightened- frightened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could frighten
you could frighten
she could frighten
we could frighten
you could frighten
they could frighten 	I could be frightening
you could be frightening
she could be frightening
we could be frightening
you could be frightening
they could be frightening	I could have frightened
you could have frightened
she could have frightened
we could have frightened
you could have frightened
they could have frightened	I could have been frightening
you could have been frightening
she could have been frightening
we could have been frightening
you could have been frightening
they could have been frightening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not frighten
you could not frighten
she could not frighten
we could not frighten
you could not frighten
they could not frighten 	I could not be frightening
you could not be frightening
she could not be frightening
we could not be frightening
you could not be frightening
they could not be frightening	I could not have frightened
you could not have frightened
she could not have frightened
we could not have frightened
you could not have frightened
they could not have frightened	I could not have been frightening
you could not have been frightening
she could not have been frightening
we could not have been frightening
you could not have been frightening
they could not have been frightening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I frighten?
could you frighten?
could she frighten?
could we frighten?
could you frighten?
could they frighten? 	could I be frightening?
could you be frightening?
could she be frightening?
could we be frightening?
could you be frightening?
could they be frightening? 	could I have frightened?
could you have frightened?
could she have frightened?
could we have frightened?
could you have frightened?
could they have frightened? 	could I have been frightening?
could you have been frightening?
could she have been frightening?
could we have been frightening?
could you have been frightening?
could they have been frightening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not frighten?
could you not frighten?
could she not frighten?
could we not frighten?
could you not frighten?
could they not frighten? 	could I not be frightening?
could you not be frightening?
could she not be frightening?
could we not be frightening?
could you not be frightening?
could they not be frightening? 	could I not have frightened?
could you not have frightened?
could she not have frightened?
could we not have frightened?
could you not have frightened?
could they not have frightened? 	could I not have been frightening?
could you not have been frightening?
could she not have been frightening?
could we not have been frightening?
could you not have been frightening?
could they not have been frightening?