Conjugação do verbo inglês
COULD PREEN

Verbo regular: preen - preened - preened

Afirmação

Forma simple	Forma com V-ing
I could preen you could preen she could preen we could preen you could preen they could preen	I could be preening you could be preening she could be preening we could be preening you could be preening they could be preening
Perfeito	Perfeito com V-ing
I could have preened you could have preened she could have preened we could have preened you could have preened they could have preened	I could have been preening you could have been preening she could have been preening we could have been preening you could have been preening they could have been preening

Negação

Forma simple	Forma com V-ing
I could not preen you could not preen she could not preen we could not preen you could not preen they could not preen	I could not be preening you could not be preening she could not be preening we could not be preening you could not be preening they could not be preening
Perfeito	Perfeito com V-ing
I could not have preened you could not have preened she could not have preened we could not have preened you could not have preened they could not have preened	I could not have been preening you could not have been preening she could not have been preening we could not have been preening you could not have been preening they could not have been preening

Forma interrogativa

Forma simple	Forma com V-ing
could I preen? could you preen? could she preen? could we preen? could you preen? could they preen?	could I be preening? could you be preening? could she be preening? could we be preening? could you be preening? could they be preening?
Perfeito	Perfeito com V-ing
could I have preened? could you have preened? could she have preened? could we have preened? could you have preened? could they have preened?	could I have been preening? could you have been preening? could she have been preening? could we have been preening? could you have been preening? could they have been preening?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not preen? could you not preen? could she not preen? could we not preen? could you not preen? could they not preen?	could I not be preening? could you not be preening? could she not be preening? could we not be preening? could you not be preening? could they not be preening?
Perfeito	Perfeito com V-ing
could I not have preened? could you not have preened? could she not have preened? could we not have preened? could you not have preened? could they not have preened?	could I not have been preening? could you not have been preening? could she not have been preening? could we not have been preening? could you not have been preening? could they not have been preening?