I could agree you could agree he could agree we could agree you could agree they could agree
Forma con V-ing
I could be agreeing you could be agreeing he could be agreeing we could be agreeing you could be agreeing they could be agreeing
Perfecto
I could have agreed you could have agreed he could have agreed we could have agreed you could have agreed they could have agreed
Perfecto con V-ing
I could have been agreeing you could have been agreeing he could have been agreeing we could have been agreeing you could have been agreeing they could have been agreeing
Negación
Forma simple
I couldn't agree you couldn't agree he couldn't agree we couldn't agree you couldn't agree they couldn't agree
Forma con V-ing
I couldn't be agreeing you couldn't be agreeing he couldn't be agreeing we couldn't be agreeing you couldn't be agreeing they couldn't be agreeing
Perfecto
I couldn't have agreed you couldn't have agreed he couldn't have agreed we couldn't have agreed you couldn't have agreed they couldn't have agreed
Perfecto con V-ing
I couldn't have been agreeing you couldn't have been agreeing he couldn't have been agreeing we couldn't have been agreeing you couldn't have been agreeing they couldn't have been agreeing
Forma interrogativa
Forma simple
could I agree? could you agree? could he agree? could we agree? could you agree? could they agree?
Forma con V-ing
could I be agreeing? could you be agreeing? could he be agreeing? could we be agreeing? could you be agreeing? could they be agreeing?
Perfecto
could I have agreed? could you have agreed? could he have agreed? could we have agreed? could you have agreed? could they have agreed?
Perfecto con V-ing
could I have been agreeing? could you have been agreeing? could he have been agreeing? could we have been agreeing? could you have been agreeing? could they have been agreeing?
Forma interro-negativa
Forma simple
couldn't I agree? couldn't you agree? couldn't he agree? couldn't we agree? couldn't you agree? couldn't they agree?
Forma con V-ing
couldn't I be agreeing? couldn't you be agreeing? couldn't he be agreeing? couldn't we be agreeing? couldn't you be agreeing? couldn't they be agreeing?
Perfecto
couldn't I have agreed? couldn't you have agreed? couldn't he have agreed? couldn't we have agreed? couldn't you have agreed? couldn't they have agreed?
Perfecto con V-ing
couldn't I have been agreeing? couldn't you have been agreeing? couldn't he have been agreeing? couldn't we have been agreeing? couldn't you have been agreeing? couldn't they have been agreeing?