I ought to undress you ought to undress she 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 she 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 she 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 she 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 ought not to undress you ought not to undress she ought not to undress we ought not to undress you ought not to undress they ought not to undress
V-ing form
I ought not to undressing you ought not to undressing she ought not to undressing we ought not to undressing you ought not to undressing they ought not to undressing
Perfect
I ought not to have undressed you ought not to have undressed she ought not to have undressed we ought not to have undressed you ought not to have undressed they ought not to have undressed
V-ing perfect
I ought not to have been undressing you ought not to have been undressing she ought not to have been undressing we ought not to have been undressing you ought not to have been undressing they ought not to have been undressing
Interrogative form
Simple form
ought to I undress? ought to you undress? ought to she 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 she 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 she 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 she 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
ought I not to undress? ought you not to undress? ought she not to undress? ought we not to undress? ought you not to undress? ought they not to undress?
V-ing form
ought I not to be undressing? ought you not to be undressing? ought she not to be undressing? ought we not to be undressing? ought you not to be undressing? ought they not to be undressing?
Perfect
ought I not to have undressed? ought you not to have undressed? ought she not to have undressed? ought we not to have undressed? ought you not to have undressed? ought they not to have undressed?
V-ing perfect
ought I not to have been undressing? ought you not to have been undressing? ought she not to have been undressing? ought we not to have been undressing? ought you not to have been undressing? ought they not to have been undressing?