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