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