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