I could assist you could assist she could assist we could assist you could assist they could assist
Forma com V-ing
I could be assisting you could be assisting she could be assisting we could be assisting you could be assisting they could be assisting
Perfeito
I could have assisted you could have assisted she could have assisted we could have assisted you could have assisted they could have assisted
Perfeito com V-ing
I could have been assisting you could have been assisting she could have been assisting we could have been assisting you could have been assisting they could have been assisting
Negação
Forma simple
I could not assist you could not assist she could not assist we could not assist you could not assist they could not assist
Forma com V-ing
I could not be assisting you could not be assisting she could not be assisting we could not be assisting you could not be assisting they could not be assisting
Perfeito
I could not have assisted you could not have assisted she could not have assisted we could not have assisted you could not have assisted they could not have assisted
Perfeito com V-ing
I could not have been assisting you could not have been assisting she could not have been assisting we could not have been assisting you could not have been assisting they could not have been assisting
Forma interrogativa
Forma simple
could I assist? could you assist? could she assist? could we assist? could you assist? could they assist?
Forma com V-ing
could I be assisting? could you be assisting? could she be assisting? could we be assisting? could you be assisting? could they be assisting?
Perfeito
could I have assisted? could you have assisted? could she have assisted? could we have assisted? could you have assisted? could they have assisted?
Perfeito com V-ing
could I have been assisting? could you have been assisting? could she have been assisting? could we have been assisting? could you have been assisting? could they have been assisting?
Forma interro-Negação
Forma simple
could I not assist? could you not assist? could she not assist? could we not assist? could you not assist? could they not assist?
Forma com V-ing
could I not be assisting? could you not be assisting? could she not be assisting? could we not be assisting? could you not be assisting? could they not be assisting?
Perfeito
could I not have assisted? could you not have assisted? could she not have assisted? could we not have assisted? could you not have assisted? could they not have assisted?
Perfeito com V-ing
could I not have been assisting? could you not have been assisting? could she not have been assisting? could we not have been assisting? could you not have been assisting? could they not have been assisting?