Conjugação do verbo inglês
COULD RIB

Verbo regular: rib - ribed - ribed

Afirmação

Forma simple	Forma com V-ing
I could rib you could rib he could rib we could rib you could rib they could rib	I could be ribing you could be ribing he could be ribing we could be ribing you could be ribing they could be ribing
Perfeito	Perfeito com V-ing
I could have ribed you could have ribed he could have ribed we could have ribed you could have ribed they could have ribed	I could have been ribing you could have been ribing he could have been ribing we could have been ribing you could have been ribing they could have been ribing

Negação

Forma simple	Forma com V-ing
I could not rib you could not rib he could not rib we could not rib you could not rib they could not rib	I could not be ribing you could not be ribing he could not be ribing we could not be ribing you could not be ribing they could not be ribing
Perfeito	Perfeito com V-ing
I could not have ribed you could not have ribed he could not have ribed we could not have ribed you could not have ribed they could not have ribed	I could not have been ribing you could not have been ribing he could not have been ribing we could not have been ribing you could not have been ribing they could not have been ribing

Forma interrogativa

Forma simple	Forma com V-ing
could I rib? could you rib? could he rib? could we rib? could you rib? could they rib?	could I be ribing? could you be ribing? could he be ribing? could we be ribing? could you be ribing? could they be ribing?
Perfeito	Perfeito com V-ing
could I have ribed? could you have ribed? could he have ribed? could we have ribed? could you have ribed? could they have ribed?	could I have been ribing? could you have been ribing? could he have been ribing? could we have been ribing? could you have been ribing? could they have been ribing?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not rib? could you not rib? could he not rib? could we not rib? could you not rib? could they not rib?	could I not be ribing? could you not be ribing? could he not be ribing? could we not be ribing? could you not be ribing? could they not be ribing?
Perfeito	Perfeito com V-ing
could I not have ribed? could you not have ribed? could he not have ribed? could we not have ribed? could you not have ribed? could they not have ribed?	could I not have been ribing? could you not have been ribing? could he not have been ribing? could we not have been ribing? could you not have been ribing? could they not have been ribing?