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