I ought to undress you ought to undress he ought to undress we ought to undress you ought to undress they ought to undress
V-ing form
I ought to be undressing you ought to be undressing he ought to be undressing we ought to be undressing you ought to be undressing they ought to be undressing
Perfect
I ought to have undressed you ought to have undressed he ought to have undressed we ought to have undressed you ought to have undressed they ought to have undressed
V-ing perfect
I ought to have been undressing you ought to have been undressing he ought to have been undressing we ought to have been undressing you ought to have been undressing they ought to have been undressing
Negation
Simple form
I oughtn't to undress you oughtn't to undress he oughtn't to undress we oughtn't to undress you oughtn't to undress they oughtn't to undress
V-ing form
I oughtn't to be undressing you oughtn't to be undressing he oughtn't to be undressing we oughtn't to be undressing you oughtn't to be undressing they oughtn't to be undressing
Perfect
I oughtn't to have undressed you oughtn't to have undressed he oughtn't to have undressed we oughtn't to have undressed you oughtn't to have undressed they oughtn't to have undressed
V-ing perfect
I oughtn't to have been undressing you oughtn't to have been undressing he oughtn't to have been undressing we oughtn't to have been undressing you oughtn't to have been undressing they oughtn't to have been undressing
Interrogative form
Simple form
ought to I undress? ought to you undress? ought to he undress? ought to we undress? ought to you undress? ought to they undress?
V-ing form
ought to I be undressing? ought to you be undressing? ought to he be undressing? ought to we be undressing? ought to you be undressing? ought to they be undressing?
Perfect
ought to I have undressed? ought to you have undressed? ought to he have undressed? ought to we have undressed? ought to you have undressed? ought to they have undressed?
V-ing perfect
ought to I have been undressing? ought to you have been undressing? ought to he have been undressing? ought to we have been undressing? ought to you have been undressing? ought to they have been undressing?
Interro-negative form
Simple form
oughtn't I to undress? oughtn't you to undress? oughtn't he to undress? oughtn't we to undress? oughtn't you to undress? oughtn't they to undress?
V-ing form
oughtn't I to be undressing? oughtn't you to be undressing? oughtn't he to be undressing? oughtn't we to be undressing? oughtn't you to be undressing? oughtn't they to be undressing?
Perfect
oughtn't I to have undressed? oughtn't you to have undressed? oughtn't he to have undressed? oughtn't we to have undressed? oughtn't you to have undressed? oughtn't they to have undressed?
V-ing perfect
oughtn't I to have been undressing? oughtn't you to have been undressing? oughtn't he to have been undressing? oughtn't we to have been undressing? oughtn't you to have been undressing? oughtn't they to have been undressing?