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