I ought to sharpen you ought to sharpen he ought to sharpen we ought to sharpen you ought to sharpen they ought to sharpen
V-ing form
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
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
V-ing perfect
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
I ought not to sharpen you ought not to sharpen he ought not to sharpen we ought not to sharpen you ought not to sharpen they ought not to sharpen
V-ing form
I ought not to sharpening you ought not to sharpening he ought not to sharpening we ought not to sharpening you ought not to sharpening they ought not to sharpening
Perfect
I ought not to have sharpened you ought not to have sharpened he ought not to have sharpened we ought not to have sharpened you ought not to have sharpened they ought not to have sharpened
V-ing perfect
I ought not to have been sharpening you ought not to have been sharpening he ought not to have been sharpening we ought not to have been sharpening you ought not to have been sharpening they ought not to have been sharpening
Interrogative form
Simple 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?
V-ing form
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
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?
V-ing perfect
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
ought I not to sharpen? ought you not to sharpen? ought he not to sharpen? ought we not to sharpen? ought you not to sharpen? ought they not to sharpen?
V-ing form
ought I not to be sharpening? ought you not to be sharpening? ought he not to be sharpening? ought we not to be sharpening? ought you not to be sharpening? ought they not to be sharpening?
Perfect
ought I not to have sharpened? ought you not to have sharpened? ought he not to have sharpened? ought we not to have sharpened? ought you not to have sharpened? ought they not to have sharpened?
V-ing perfect
ought I not to have been sharpening? ought you not to have been sharpening? ought he not to have been sharpening? ought we not to have been sharpening? ought you not to have been sharpening? ought they not to have been sharpening?