Verbo regular: calculate - calculated - calculated
Afirmación
Forma simple
I could calculate you could calculate he could calculate we could calculate you could calculate they could calculate
Forma con V-ing
I could be calculating you could be calculating he could be calculating we could be calculating you could be calculating they could be calculating
Perfecto
I could have calculated you could have calculated he could have calculated we could have calculated you could have calculated they could have calculated
Perfecto con V-ing
I could have been calculating you could have been calculating he could have been calculating we could have been calculating you could have been calculating they could have been calculating
Negación
Forma simple
I couldn't calculate you couldn't calculate he couldn't calculate we couldn't calculate you couldn't calculate they couldn't calculate
Forma con V-ing
I couldn't be calculating you couldn't be calculating he couldn't be calculating we couldn't be calculating you couldn't be calculating they couldn't be calculating
Perfecto
I couldn't have calculated you couldn't have calculated he couldn't have calculated we couldn't have calculated you couldn't have calculated they couldn't have calculated
Perfecto con V-ing
I couldn't have been calculating you couldn't have been calculating he couldn't have been calculating we couldn't have been calculating you couldn't have been calculating they couldn't have been calculating
Forma interrogativa
Forma simple
could I calculate? could you calculate? could he calculate? could we calculate? could you calculate? could they calculate?
Forma con V-ing
could I be calculating? could you be calculating? could he be calculating? could we be calculating? could you be calculating? could they be calculating?
Perfecto
could I have calculated? could you have calculated? could he have calculated? could we have calculated? could you have calculated? could they have calculated?
Perfecto con V-ing
could I have been calculating? could you have been calculating? could he have been calculating? could we have been calculating? could you have been calculating? could they have been calculating?
Forma interro-negativa
Forma simple
couldn't I calculate? couldn't you calculate? couldn't he calculate? couldn't we calculate? couldn't you calculate? couldn't they calculate?
Forma con V-ing
couldn't I be calculating? couldn't you be calculating? couldn't he be calculating? couldn't we be calculating? couldn't you be calculating? couldn't they be calculating?
Perfecto
couldn't I have calculated? couldn't you have calculated? couldn't he have calculated? couldn't we have calculated? couldn't you have calculated? couldn't they have calculated?
Perfecto con V-ing
couldn't I have been calculating? couldn't you have been calculating? couldn't he have been calculating? couldn't we have been calculating? couldn't you have been calculating? couldn't they have been calculating?