English verb conjugation
OUGHT TO SHARPEN

Regular verb: sharpen - sharpened - sharpened

Affirmation

Simple form	V-ing form
I ought to sharpen you ought to sharpen he ought to sharpen we ought to sharpen you ought to sharpen they ought to sharpen	I ought to be sharpening you ought to be sharpening he ought to be sharpening we ought to be sharpening you ought to be sharpening they ought to be sharpening
Perfect	V-ing perfect
I ought to have sharpened you ought to have sharpened he ought to have sharpened we ought to have sharpened you ought to have sharpened they ought to have sharpened	I ought to have been sharpening you ought to have been sharpening he ought to have been sharpening we ought to have been sharpening you ought to have been sharpening they ought to have been sharpening

Negation

Simple form	V-ing form
I oughtn't to sharpen you oughtn't to sharpen he oughtn't to sharpen we oughtn't to sharpen you oughtn't to sharpen they oughtn't to sharpen	I oughtn't to be sharpening you oughtn't to be sharpening he oughtn't to be sharpening we oughtn't to be sharpening you oughtn't to be sharpening they oughtn't to be sharpening
Perfect	V-ing perfect
I oughtn't to have sharpened you oughtn't to have sharpened he oughtn't to have sharpened we oughtn't to have sharpened you oughtn't to have sharpened they oughtn't to have sharpened	I oughtn't to have been sharpening you oughtn't to have been sharpening he oughtn't to have been sharpening we oughtn't to have been sharpening you oughtn't to have been sharpening they oughtn't to have been sharpening

Interrogative form

Simple form	V-ing form
ought to I sharpen? ought to you sharpen? ought to he sharpen? ought to we sharpen? ought to you sharpen? ought to they sharpen?	ought to I be sharpening? ought to you be sharpening? ought to he be sharpening? ought to we be sharpening? ought to you be sharpening? ought to they be sharpening?
Perfect	V-ing perfect
ought to I have sharpened? ought to you have sharpened? ought to he have sharpened? ought to we have sharpened? ought to you have sharpened? ought to they have sharpened?	ought to I have been sharpening? ought to you have been sharpening? ought to he have been sharpening? ought to we have been sharpening? ought to you have been sharpening? ought to they have been sharpening?

Interro-negative form

Simple form	V-ing form
oughtn't I to sharpen? oughtn't you to sharpen? oughtn't he to sharpen? oughtn't we to sharpen? oughtn't you to sharpen? oughtn't they to sharpen?	oughtn't I to be sharpening? oughtn't you to be sharpening? oughtn't he to be sharpening? oughtn't we to be sharpening? oughtn't you to be sharpening? oughtn't they to be sharpening?
Perfect	V-ing perfect
oughtn't I to have sharpened? oughtn't you to have sharpened? oughtn't he to have sharpened? oughtn't we to have sharpened? oughtn't you to have sharpened? oughtn't they to have sharpened?	oughtn't I to have been sharpening? oughtn't you to have been sharpening? oughtn't he to have been sharpening? oughtn't we to have been sharpening? oughtn't you to have been sharpening? oughtn't they to have been sharpening?