Conjugación del verbo inglés
COULD PERTAIN

Verbo regular: pertain - pertained - pertained

Afirmación

Forma simple	Forma con V-ing
I could pertain you could pertain he could pertain we could pertain you could pertain they could pertain	I could be pertaining you could be pertaining he could be pertaining we could be pertaining you could be pertaining they could be pertaining
Perfecto	Perfecto con V-ing
I could have pertained you could have pertained he could have pertained we could have pertained you could have pertained they could have pertained	I could have been pertaining you could have been pertaining he could have been pertaining we could have been pertaining you could have been pertaining they could have been pertaining

Negación

Forma simple	Forma con V-ing
I couldn't pertain you couldn't pertain he couldn't pertain we couldn't pertain you couldn't pertain they couldn't pertain	I couldn't be pertaining you couldn't be pertaining he couldn't be pertaining we couldn't be pertaining you couldn't be pertaining they couldn't be pertaining
Perfecto	Perfecto con V-ing
I couldn't have pertained you couldn't have pertained he couldn't have pertained we couldn't have pertained you couldn't have pertained they couldn't have pertained	I couldn't have been pertaining you couldn't have been pertaining he couldn't have been pertaining we couldn't have been pertaining you couldn't have been pertaining they couldn't have been pertaining

Forma interrogativa

Forma simple	Forma con V-ing
could I pertain? could you pertain? could he pertain? could we pertain? could you pertain? could they pertain?	could I be pertaining? could you be pertaining? could he be pertaining? could we be pertaining? could you be pertaining? could they be pertaining?
Perfecto	Perfecto con V-ing
could I have pertained? could you have pertained? could he have pertained? could we have pertained? could you have pertained? could they have pertained?	could I have been pertaining? could you have been pertaining? could he have been pertaining? could we have been pertaining? could you have been pertaining? could they have been pertaining?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I pertain? couldn't you pertain? couldn't he pertain? couldn't we pertain? couldn't you pertain? couldn't they pertain?	couldn't I be pertaining? couldn't you be pertaining? couldn't he be pertaining? couldn't we be pertaining? couldn't you be pertaining? couldn't they be pertaining?
Perfecto	Perfecto con V-ing
couldn't I have pertained? couldn't you have pertained? couldn't he have pertained? couldn't we have pertained? couldn't you have pertained? couldn't they have pertained?	couldn't I have been pertaining? couldn't you have been pertaining? couldn't he have been pertaining? couldn't we have been pertaining? couldn't you have been pertaining? couldn't they have been pertaining?