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