Conjugação do verbo inglês
COULD TUN

Verbo regular: tun - tuned - tuned

Afirmação

Forma simple	Forma com V-ing
I could tun you could tun he could tun we could tun you could tun they could tun	I could be tuning you could be tuning he could be tuning we could be tuning you could be tuning they could be tuning
Perfeito	Perfeito com V-ing
I could have tuned you could have tuned he could have tuned we could have tuned you could have tuned they could have tuned	I could have been tuning you could have been tuning he could have been tuning we could have been tuning you could have been tuning they could have been tuning

Negação

Forma simple	Forma com V-ing
I could not tun you could not tun he could not tun we could not tun you could not tun they could not tun	I could not be tuning you could not be tuning he could not be tuning we could not be tuning you could not be tuning they could not be tuning
Perfeito	Perfeito com V-ing
I could not have tuned you could not have tuned he could not have tuned we could not have tuned you could not have tuned they could not have tuned	I could not have been tuning you could not have been tuning he could not have been tuning we could not have been tuning you could not have been tuning they could not have been tuning

Forma interrogativa

Forma simple	Forma com V-ing
could I tun? could you tun? could he tun? could we tun? could you tun? could they tun?	could I be tuning? could you be tuning? could he be tuning? could we be tuning? could you be tuning? could they be tuning?
Perfeito	Perfeito com V-ing
could I have tuned? could you have tuned? could he have tuned? could we have tuned? could you have tuned? could they have tuned?	could I have been tuning? could you have been tuning? could he have been tuning? could we have been tuning? could you have been tuning? could they have been tuning?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not tun? could you not tun? could he not tun? could we not tun? could you not tun? could they not tun?	could I not be tuning? could you not be tuning? could he not be tuning? could we not be tuning? could you not be tuning? could they not be tuning?
Perfeito	Perfeito com V-ing
could I not have tuned? could you not have tuned? could he not have tuned? could we not have tuned? could you not have tuned? could they not have tuned?	could I not have been tuning? could you not have been tuning? could he not have been tuning? could we not have been tuning? could you not have been tuning? could they not have been tuning?