Conjugación del verbo inglés
COULD EXERT

Verbo regular: exert - exerted - exerted

Afirmación

Forma simple	Forma con V-ing
I could exert you could exert he could exert we could exert you could exert they could exert	I could be exerting you could be exerting he could be exerting we could be exerting you could be exerting they could be exerting
Perfecto	Perfecto con V-ing
I could have exerted you could have exerted he could have exerted we could have exerted you could have exerted they could have exerted	I could have been exerting you could have been exerting he could have been exerting we could have been exerting you could have been exerting they could have been exerting

Negación

Forma simple	Forma con V-ing
I could not exert you could not exert he could not exert we could not exert you could not exert they could not exert	I could not be exerting you could not be exerting he could not be exerting we could not be exerting you could not be exerting they could not be exerting
Perfecto	Perfecto con V-ing
I could not have exerted you could not have exerted he could not have exerted we could not have exerted you could not have exerted they could not have exerted	I could not have been exerting you could not have been exerting he could not have been exerting we could not have been exerting you could not have been exerting they could not have been exerting

Forma interrogativa

Forma simple	Forma con V-ing
could I exert? could you exert? could he exert? could we exert? could you exert? could they exert?	could I be exerting? could you be exerting? could he be exerting? could we be exerting? could you be exerting? could they be exerting?
Perfecto	Perfecto con V-ing
could I have exerted? could you have exerted? could he have exerted? could we have exerted? could you have exerted? could they have exerted?	could I have been exerting? could you have been exerting? could he have been exerting? could we have been exerting? could you have been exerting? could they have been exerting?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not exert? could you not exert? could he not exert? could we not exert? could you not exert? could they not exert?	could I not be exerting? could you not be exerting? could he not be exerting? could we not be exerting? could you not be exerting? could they not be exerting?
Perfecto	Perfecto con V-ing
could I not have exerted? could you not have exerted? could he not have exerted? could we not have exerted? could you not have exerted? could they not have exerted?	could I not have been exerting? could you not have been exerting? could he not have been exerting? could we not have been exerting? could you not have been exerting? could they not have been exerting?