Conjugación del verbo inglés
COULD PREVAIL

Verbo regular: prevail - prevailed - prevailed

Afirmación

Forma simple	Forma con V-ing
I could prevail you could prevail he could prevail we could prevail you could prevail they could prevail	I could be prevailing you could be prevailing he could be prevailing we could be prevailing you could be prevailing they could be prevailing
Perfecto	Perfecto con V-ing
I could have prevailed you could have prevailed he could have prevailed we could have prevailed you could have prevailed they could have prevailed	I could have been prevailing you could have been prevailing he could have been prevailing we could have been prevailing you could have been prevailing they could have been prevailing

Negación

Forma simple	Forma con V-ing
I couldn't prevail you couldn't prevail he couldn't prevail we couldn't prevail you couldn't prevail they couldn't prevail	I couldn't be prevailing you couldn't be prevailing he couldn't be prevailing we couldn't be prevailing you couldn't be prevailing they couldn't be prevailing
Perfecto	Perfecto con V-ing
I couldn't have prevailed you couldn't have prevailed he couldn't have prevailed we couldn't have prevailed you couldn't have prevailed they couldn't have prevailed	I couldn't have been prevailing you couldn't have been prevailing he couldn't have been prevailing we couldn't have been prevailing you couldn't have been prevailing they couldn't have been prevailing

Forma interrogativa

Forma simple	Forma con V-ing
could I prevail? could you prevail? could he prevail? could we prevail? could you prevail? could they prevail?	could I be prevailing? could you be prevailing? could he be prevailing? could we be prevailing? could you be prevailing? could they be prevailing?
Perfecto	Perfecto con V-ing
could I have prevailed? could you have prevailed? could he have prevailed? could we have prevailed? could you have prevailed? could they have prevailed?	could I have been prevailing? could you have been prevailing? could he have been prevailing? could we have been prevailing? could you have been prevailing? could they have been prevailing?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I prevail? couldn't you prevail? couldn't he prevail? couldn't we prevail? couldn't you prevail? couldn't they prevail?	couldn't I be prevailing? couldn't you be prevailing? couldn't he be prevailing? couldn't we be prevailing? couldn't you be prevailing? couldn't they be prevailing?
Perfecto	Perfecto con V-ing
couldn't I have prevailed? couldn't you have prevailed? couldn't he have prevailed? couldn't we have prevailed? couldn't you have prevailed? couldn't they have prevailed?	couldn't I have been prevailing? couldn't you have been prevailing? couldn't he have been prevailing? couldn't we have been prevailing? couldn't you have been prevailing? couldn't they have been prevailing?