Verbo regular: calculate - calculated - calculated
Afirmação
Forma simple
I could calculate you could calculate he could calculate we could calculate you could calculate they could calculate
Forma com 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
Perfeito
I could have calculated you could have calculated he could have calculated we could have calculated you could have calculated they could have calculated
Perfeito com 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
Negação
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 com 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
Perfeito
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
Perfeito com 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 com 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?
Perfeito
could I have calculated? could you have calculated? could he have calculated? could we have calculated? could you have calculated? could they have calculated?
Perfeito com 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-Negação
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 com 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?
Perfeito
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?
Perfeito com 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?