Conjugación del verbo inglés
COULD DISCERN

Verbo regular: discern - discerned - discerned

Afirmación

Forma simple	Forma con V-ing
I could discern you could discern he could discern we could discern you could discern they could discern	I could be discerning you could be discerning he could be discerning we could be discerning you could be discerning they could be discerning
Perfecto	Perfecto con V-ing
I could have discerned you could have discerned he could have discerned we could have discerned you could have discerned they could have discerned	I could have been discerning you could have been discerning he could have been discerning we could have been discerning you could have been discerning they could have been discerning

Negación

Forma simple	Forma con V-ing
I could not discern you could not discern he could not discern we could not discern you could not discern they could not discern	I could not be discerning you could not be discerning he could not be discerning we could not be discerning you could not be discerning they could not be discerning
Perfecto	Perfecto con V-ing
I could not have discerned you could not have discerned he could not have discerned we could not have discerned you could not have discerned they could not have discerned	I could not have been discerning you could not have been discerning he could not have been discerning we could not have been discerning you could not have been discerning they could not have been discerning

Forma interrogativa

Forma simple	Forma con V-ing
could I discern? could you discern? could he discern? could we discern? could you discern? could they discern?	could I be discerning? could you be discerning? could he be discerning? could we be discerning? could you be discerning? could they be discerning?
Perfecto	Perfecto con V-ing
could I have discerned? could you have discerned? could he have discerned? could we have discerned? could you have discerned? could they have discerned?	could I have been discerning? could you have been discerning? could he have been discerning? could we have been discerning? could you have been discerning? could they have been discerning?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not discern? could you not discern? could he not discern? could we not discern? could you not discern? could they not discern?	could I not be discerning? could you not be discerning? could he not be discerning? could we not be discerning? could you not be discerning? could they not be discerning?
Perfecto	Perfecto con V-ing
could I not have discerned? could you not have discerned? could he not have discerned? could we not have discerned? could you not have discerned? could they not have discerned?	could I not have been discerning? could you not have been discerning? could he not have been discerning? could we not have been discerning? could you not have been discerning? could they not have been discerning?