Conjugação do verbo inglês
COULD ROOST

Verbo regular: roost - roosted - roosted

Afirmação

Forma simple	Forma com V-ing
I could roost you could roost he could roost we could roost you could roost they could roost	I could be roosting you could be roosting he could be roosting we could be roosting you could be roosting they could be roosting
Perfeito	Perfeito com V-ing
I could have roosted you could have roosted he could have roosted we could have roosted you could have roosted they could have roosted	I could have been roosting you could have been roosting he could have been roosting we could have been roosting you could have been roosting they could have been roosting

Negação

Forma simple	Forma com V-ing
I could not roost you could not roost he could not roost we could not roost you could not roost they could not roost	I could not be roosting you could not be roosting he could not be roosting we could not be roosting you could not be roosting they could not be roosting
Perfeito	Perfeito com V-ing
I could not have roosted you could not have roosted he could not have roosted we could not have roosted you could not have roosted they could not have roosted	I could not have been roosting you could not have been roosting he could not have been roosting we could not have been roosting you could not have been roosting they could not have been roosting

Forma interrogativa

Forma simple	Forma com V-ing
could I roost? could you roost? could he roost? could we roost? could you roost? could they roost?	could I be roosting? could you be roosting? could he be roosting? could we be roosting? could you be roosting? could they be roosting?
Perfeito	Perfeito com V-ing
could I have roosted? could you have roosted? could he have roosted? could we have roosted? could you have roosted? could they have roosted?	could I have been roosting? could you have been roosting? could he have been roosting? could we have been roosting? could you have been roosting? could they have been roosting?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not roost? could you not roost? could he not roost? could we not roost? could you not roost? could they not roost?	could I not be roosting? could you not be roosting? could he not be roosting? could we not be roosting? could you not be roosting? could they not be roosting?
Perfeito	Perfeito com V-ing
could I not have roosted? could you not have roosted? could he not have roosted? could we not have roosted? could you not have roosted? could they not have roosted?	could I not have been roosting? could you not have been roosting? could he not have been roosting? could we not have been roosting? could you not have been roosting? could they not have been roosting?