Verbo regular: alternate - alternated - alternated
Afirmación
Forma simple
I could alternate you could alternate he could alternate we could alternate you could alternate they could alternate
Forma con V-ing
I could be alternating you could be alternating he could be alternating we could be alternating you could be alternating they could be alternating
Perfecto
I could have alternated you could have alternated he could have alternated we could have alternated you could have alternated they could have alternated
Perfecto con V-ing
I could have been alternating you could have been alternating he could have been alternating we could have been alternating you could have been alternating they could have been alternating
Negación
Forma simple
I could not alternate you could not alternate he could not alternate we could not alternate you could not alternate they could not alternate
Forma con V-ing
I could not be alternating you could not be alternating he could not be alternating we could not be alternating you could not be alternating they could not be alternating
Perfecto
I could not have alternated you could not have alternated he could not have alternated we could not have alternated you could not have alternated they could not have alternated
Perfecto con V-ing
I could not have been alternating you could not have been alternating he could not have been alternating we could not have been alternating you could not have been alternating they could not have been alternating
Forma interrogativa
Forma simple
could I alternate? could you alternate? could he alternate? could we alternate? could you alternate? could they alternate?
Forma con V-ing
could I be alternating? could you be alternating? could he be alternating? could we be alternating? could you be alternating? could they be alternating?
Perfecto
could I have alternated? could you have alternated? could he have alternated? could we have alternated? could you have alternated? could they have alternated?
Perfecto con V-ing
could I have been alternating? could you have been alternating? could he have been alternating? could we have been alternating? could you have been alternating? could they have been alternating?
Forma interro-negativa
Forma simple
could I not alternate? could you not alternate? could he not alternate? could we not alternate? could you not alternate? could they not alternate?
Forma con V-ing
could I not be alternating? could you not be alternating? could he not be alternating? could we not be alternating? could you not be alternating? could they not be alternating?
Perfecto
could I not have alternated? could you not have alternated? could he not have alternated? could we not have alternated? could you not have alternated? could they not have alternated?
Perfecto con V-ing
could I not have been alternating? could you not have been alternating? could he not have been alternating? could we not have been alternating? could you not have been alternating? could they not have been alternating?