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