Conjugación del verbo inglés
COULD ECHO

Verbo regular: echo - echoed - echoed

Afirmación

Forma simple	Forma con V-ing
I could echo you could echo she could echo we could echo you could echo they could echo	I could be echoing you could be echoing she could be echoing we could be echoing you could be echoing they could be echoing
Perfecto	Perfecto con V-ing
I could have echoed you could have echoed she could have echoed we could have echoed you could have echoed they could have echoed	I could have been echoing you could have been echoing she could have been echoing we could have been echoing you could have been echoing they could have been echoing

Negación

Forma simple	Forma con V-ing
I could not echo you could not echo she could not echo we could not echo you could not echo they could not echo	I could not be echoing you could not be echoing she could not be echoing we could not be echoing you could not be echoing they could not be echoing
Perfecto	Perfecto con V-ing
I could not have echoed you could not have echoed she could not have echoed we could not have echoed you could not have echoed they could not have echoed	I could not have been echoing you could not have been echoing she could not have been echoing we could not have been echoing you could not have been echoing they could not have been echoing

Forma interrogativa

Forma simple	Forma con V-ing
could I echo? could you echo? could she echo? could we echo? could you echo? could they echo?	could I be echoing? could you be echoing? could she be echoing? could we be echoing? could you be echoing? could they be echoing?
Perfecto	Perfecto con V-ing
could I have echoed? could you have echoed? could she have echoed? could we have echoed? could you have echoed? could they have echoed?	could I have been echoing? could you have been echoing? could she have been echoing? could we have been echoing? could you have been echoing? could they have been echoing?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not echo? could you not echo? could she not echo? could we not echo? could you not echo? could they not echo?	could I not be echoing? could you not be echoing? could she not be echoing? could we not be echoing? could you not be echoing? could they not be echoing?
Perfecto	Perfecto con V-ing
could I not have echoed? could you not have echoed? could she not have echoed? could we not have echoed? could you not have echoed? could they not have echoed?	could I not have been echoing? could you not have been echoing? could she not have been echoing? could we not have been echoing? could you not have been echoing? could they not have been echoing?