Conjugación del verbo inglés
COULD ABSTAIN

Verbo regular: abstain - abstained - abstained

Afirmación

Forma simple	Forma con V-ing
I could abstain you could abstain he could abstain we could abstain you could abstain they could abstain	I could be abstaining you could be abstaining he could be abstaining we could be abstaining you could be abstaining they could be abstaining
Perfecto	Perfecto con V-ing
I could have abstained you could have abstained he could have abstained we could have abstained you could have abstained they could have abstained	I could have been abstaining you could have been abstaining he could have been abstaining we could have been abstaining you could have been abstaining they could have been abstaining

Negación

Forma simple	Forma con V-ing
I could not abstain you could not abstain he could not abstain we could not abstain you could not abstain they could not abstain	I could not be abstaining you could not be abstaining he could not be abstaining we could not be abstaining you could not be abstaining they could not be abstaining
Perfecto	Perfecto con V-ing
I could not have abstained you could not have abstained he could not have abstained we could not have abstained you could not have abstained they could not have abstained	I could not have been abstaining you could not have been abstaining he could not have been abstaining we could not have been abstaining you could not have been abstaining they could not have been abstaining

Forma interrogativa

Forma simple	Forma con V-ing
could I abstain? could you abstain? could he abstain? could we abstain? could you abstain? could they abstain?	could I be abstaining? could you be abstaining? could he be abstaining? could we be abstaining? could you be abstaining? could they be abstaining?
Perfecto	Perfecto con V-ing
could I have abstained? could you have abstained? could he have abstained? could we have abstained? could you have abstained? could they have abstained?	could I have been abstaining? could you have been abstaining? could he have been abstaining? could we have been abstaining? could you have been abstaining? could they have been abstaining?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not abstain? could you not abstain? could he not abstain? could we not abstain? could you not abstain? could they not abstain?	could I not be abstaining? could you not be abstaining? could he not be abstaining? could we not be abstaining? could you not be abstaining? could they not be abstaining?
Perfecto	Perfecto con V-ing
could I not have abstained? could you not have abstained? could he not have abstained? could we not have abstained? could you not have abstained? could they not have abstained?	could I not have been abstaining? could you not have been abstaining? could he not have been abstaining? could we not have been abstaining? could you not have been abstaining? could they not have been abstaining?