English verb conjugation
OUGHT TO ATTEND

Regular verb: attend - attended - attended

Affirmation

Simple form	V-ing form
I ought to attend you ought to attend he ought to attend we ought to attend you ought to attend they ought to attend	I ought to be attending you ought to be attending he ought to be attending we ought to be attending you ought to be attending they ought to be attending
Perfect	V-ing perfect
I ought to have attended you ought to have attended he ought to have attended we ought to have attended you ought to have attended they ought to have attended	I ought to have been attending you ought to have been attending he ought to have been attending we ought to have been attending you ought to have been attending they ought to have been attending

Negation

Simple form	V-ing form
I oughtn't to attend you oughtn't to attend he oughtn't to attend we oughtn't to attend you oughtn't to attend they oughtn't to attend	I oughtn't to be attending you oughtn't to be attending he oughtn't to be attending we oughtn't to be attending you oughtn't to be attending they oughtn't to be attending
Perfect	V-ing perfect
I oughtn't to have attended you oughtn't to have attended he oughtn't to have attended we oughtn't to have attended you oughtn't to have attended they oughtn't to have attended	I oughtn't to have been attending you oughtn't to have been attending he oughtn't to have been attending we oughtn't to have been attending you oughtn't to have been attending they oughtn't to have been attending

Interrogative form

Simple form	V-ing form
ought to I attend? ought to you attend? ought to he attend? ought to we attend? ought to you attend? ought to they attend?	ought to I be attending? ought to you be attending? ought to he be attending? ought to we be attending? ought to you be attending? ought to they be attending?
Perfect	V-ing perfect
ought to I have attended? ought to you have attended? ought to he have attended? ought to we have attended? ought to you have attended? ought to they have attended?	ought to I have been attending? ought to you have been attending? ought to he have been attending? ought to we have been attending? ought to you have been attending? ought to they have been attending?

Interro-negative form

Simple form	V-ing form
oughtn't I to attend? oughtn't you to attend? oughtn't he to attend? oughtn't we to attend? oughtn't you to attend? oughtn't they to attend?	oughtn't I to be attending? oughtn't you to be attending? oughtn't he to be attending? oughtn't we to be attending? oughtn't you to be attending? oughtn't they to be attending?
Perfect	V-ing perfect
oughtn't I to have attended? oughtn't you to have attended? oughtn't he to have attended? oughtn't we to have attended? oughtn't you to have attended? oughtn't they to have attended?	oughtn't I to have been attending? oughtn't you to have been attending? oughtn't he to have been attending? oughtn't we to have been attending? oughtn't you to have been attending? oughtn't they to have been attending?