Conjugación del verbo inglés
COULD YELL

Verbo regular: yell - yelled - yelled

Afirmación

Forma simple	Forma con V-ing
I could yell you could yell she could yell we could yell you could yell they could yell	I could be yelling you could be yelling she could be yelling we could be yelling you could be yelling they could be yelling
Perfecto	Perfecto con V-ing
I could have yelled you could have yelled she could have yelled we could have yelled you could have yelled they could have yelled	I could have been yelling you could have been yelling she could have been yelling we could have been yelling you could have been yelling they could have been yelling

Negación

Forma simple	Forma con V-ing
I could not yell you could not yell she could not yell we could not yell you could not yell they could not yell	I could not be yelling you could not be yelling she could not be yelling we could not be yelling you could not be yelling they could not be yelling
Perfecto	Perfecto con V-ing
I could not have yelled you could not have yelled she could not have yelled we could not have yelled you could not have yelled they could not have yelled	I could not have been yelling you could not have been yelling she could not have been yelling we could not have been yelling you could not have been yelling they could not have been yelling

Forma interrogativa

Forma simple	Forma con V-ing
could I yell? could you yell? could she yell? could we yell? could you yell? could they yell?	could I be yelling? could you be yelling? could she be yelling? could we be yelling? could you be yelling? could they be yelling?
Perfecto	Perfecto con V-ing
could I have yelled? could you have yelled? could she have yelled? could we have yelled? could you have yelled? could they have yelled?	could I have been yelling? could you have been yelling? could she have been yelling? could we have been yelling? could you have been yelling? could they have been yelling?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not yell? could you not yell? could she not yell? could we not yell? could you not yell? could they not yell?	could I not be yelling? could you not be yelling? could she not be yelling? could we not be yelling? could you not be yelling? could they not be yelling?
Perfecto	Perfecto con V-ing
could I not have yelled? could you not have yelled? could she not have yelled? could we not have yelled? could you not have yelled? could they not have yelled?	could I not have been yelling? could you not have been yelling? could she not have been yelling? could we not have been yelling? could you not have been yelling? could they not have been yelling?