English verb conjugation
OUGHT TO ENTERTAIN

Regular verb: entertain - entertained - entertained

Affirmation

Simple form	V-ing form
I ought to entertain you ought to entertain he ought to entertain we ought to entertain you ought to entertain they ought to entertain	I ought to be entertaining you ought to be entertaining he ought to be entertaining we ought to be entertaining you ought to be entertaining they ought to be entertaining
Perfect	V-ing perfect
I ought to have entertained you ought to have entertained he ought to have entertained we ought to have entertained you ought to have entertained they ought to have entertained	I ought to have been entertaining you ought to have been entertaining he ought to have been entertaining we ought to have been entertaining you ought to have been entertaining they ought to have been entertaining

Negation

Simple form	V-ing form
I oughtn't to entertain you oughtn't to entertain he oughtn't to entertain we oughtn't to entertain you oughtn't to entertain they oughtn't to entertain	I oughtn't to be entertaining you oughtn't to be entertaining he oughtn't to be entertaining we oughtn't to be entertaining you oughtn't to be entertaining they oughtn't to be entertaining
Perfect	V-ing perfect
I oughtn't to have entertained you oughtn't to have entertained he oughtn't to have entertained we oughtn't to have entertained you oughtn't to have entertained they oughtn't to have entertained	I oughtn't to have been entertaining you oughtn't to have been entertaining he oughtn't to have been entertaining we oughtn't to have been entertaining you oughtn't to have been entertaining they oughtn't to have been entertaining

Interrogative form

Simple form	V-ing form
ought to I entertain? ought to you entertain? ought to he entertain? ought to we entertain? ought to you entertain? ought to they entertain?	ought to I be entertaining? ought to you be entertaining? ought to he be entertaining? ought to we be entertaining? ought to you be entertaining? ought to they be entertaining?
Perfect	V-ing perfect
ought to I have entertained? ought to you have entertained? ought to he have entertained? ought to we have entertained? ought to you have entertained? ought to they have entertained?	ought to I have been entertaining? ought to you have been entertaining? ought to he have been entertaining? ought to we have been entertaining? ought to you have been entertaining? ought to they have been entertaining?

Interro-negative form

Simple form	V-ing form
oughtn't I to entertain? oughtn't you to entertain? oughtn't he to entertain? oughtn't we to entertain? oughtn't you to entertain? oughtn't they to entertain?	oughtn't I to be entertaining? oughtn't you to be entertaining? oughtn't he to be entertaining? oughtn't we to be entertaining? oughtn't you to be entertaining? oughtn't they to be entertaining?
Perfect	V-ing perfect
oughtn't I to have entertained? oughtn't you to have entertained? oughtn't he to have entertained? oughtn't we to have entertained? oughtn't you to have entertained? oughtn't they to have entertained?	oughtn't I to have been entertaining? oughtn't you to have been entertaining? oughtn't he to have been entertaining? oughtn't we to have been entertaining? oughtn't you to have been entertaining? oughtn't they to have been entertaining?