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