Conjugación del verbo inglés
COULD ALTERNATE

Verbo regular: alternate - alternated - alternated

Afirmación

Forma simple	Forma con V-ing
I could alternate you could alternate she could alternate we could alternate you could alternate they could alternate	I could be alternating you could be alternating she could be alternating we could be alternating you could be alternating they could be alternating
Perfecto	Perfecto con V-ing
I could have alternated you could have alternated she could have alternated we could have alternated you could have alternated they could have alternated	I could have been alternating you could have been alternating she could have been alternating we could have been alternating you could have been alternating they could have been alternating

Negación

Forma simple	Forma con V-ing
I couldn't alternate you couldn't alternate she couldn't alternate we couldn't alternate you couldn't alternate they couldn't alternate	I couldn't be alternating you couldn't be alternating she couldn't be alternating we couldn't be alternating you couldn't be alternating they couldn't be alternating
Perfecto	Perfecto con V-ing
I couldn't have alternated you couldn't have alternated she couldn't have alternated we couldn't have alternated you couldn't have alternated they couldn't have alternated	I couldn't have been alternating you couldn't have been alternating she couldn't have been alternating we couldn't have been alternating you couldn't have been alternating they couldn't have been alternating

Forma interrogativa

Forma simple	Forma con V-ing
could I alternate? could you alternate? could she alternate? could we alternate? could you alternate? could they alternate?	could I be alternating? could you be alternating? could she be alternating? could we be alternating? could you be alternating? could they be alternating?
Perfecto	Perfecto con V-ing
could I have alternated? could you have alternated? could she have alternated? could we have alternated? could you have alternated? could they have alternated?	could I have been alternating? could you have been alternating? could she have been alternating? could we have been alternating? could you have been alternating? could they have been alternating?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I alternate? couldn't you alternate? couldn't she alternate? couldn't we alternate? couldn't you alternate? couldn't they alternate?	couldn't I be alternating? couldn't you be alternating? couldn't she be alternating? couldn't we be alternating? couldn't you be alternating? couldn't they be alternating?
Perfecto	Perfecto con V-ing
couldn't I have alternated? couldn't you have alternated? couldn't she have alternated? couldn't we have alternated? couldn't you have alternated? couldn't they have alternated?	couldn't I have been alternating? couldn't you have been alternating? couldn't she have been alternating? couldn't we have been alternating? couldn't you have been alternating? couldn't they have been alternating?