I ought to calculate you ought to calculate she ought to calculate we ought to calculate you ought to calculate they ought to calculate
V-ing form
I ought to be calculating you ought to be calculating she ought to be calculating we ought to be calculating you ought to be calculating they ought to be calculating
Perfect
I ought to have calculated you ought to have calculated she ought to have calculated we ought to have calculated you ought to have calculated they ought to have calculated
V-ing perfect
I ought to have been calculating you ought to have been calculating she ought to have been calculating we ought to have been calculating you ought to have been calculating they ought to have been calculating
Negation
Simple form
I oughtn't to calculate you oughtn't to calculate she oughtn't to calculate we oughtn't to calculate you oughtn't to calculate they oughtn't to calculate
V-ing form
I oughtn't to be calculating you oughtn't to be calculating she oughtn't to be calculating we oughtn't to be calculating you oughtn't to be calculating they oughtn't to be calculating
Perfect
I oughtn't to have calculated you oughtn't to have calculated she oughtn't to have calculated we oughtn't to have calculated you oughtn't to have calculated they oughtn't to have calculated
V-ing perfect
I oughtn't to have been calculating you oughtn't to have been calculating she oughtn't to have been calculating we oughtn't to have been calculating you oughtn't to have been calculating they oughtn't to have been calculating
Interrogative form
Simple form
ought to I calculate? ought to you calculate? ought to she calculate? ought to we calculate? ought to you calculate? ought to they calculate?
V-ing form
ought to I be calculating? ought to you be calculating? ought to she be calculating? ought to we be calculating? ought to you be calculating? ought to they be calculating?
Perfect
ought to I have calculated? ought to you have calculated? ought to she have calculated? ought to we have calculated? ought to you have calculated? ought to they have calculated?
V-ing perfect
ought to I have been calculating? ought to you have been calculating? ought to she have been calculating? ought to we have been calculating? ought to you have been calculating? ought to they have been calculating?
Interro-negative form
Simple form
oughtn't I to calculate? oughtn't you to calculate? oughtn't she to calculate? oughtn't we to calculate? oughtn't you to calculate? oughtn't they to calculate?
V-ing form
oughtn't I to be calculating? oughtn't you to be calculating? oughtn't she to be calculating? oughtn't we to be calculating? oughtn't you to be calculating? oughtn't they to be calculating?
Perfect
oughtn't I to have calculated? oughtn't you to have calculated? oughtn't she to have calculated? oughtn't we to have calculated? oughtn't you to have calculated? oughtn't they to have calculated?
V-ing perfect
oughtn't I to have been calculating? oughtn't you to have been calculating? oughtn't she to have been calculating? oughtn't we to have been calculating? oughtn't you to have been calculating? oughtn't they to have been calculating?