English verb conjugation
SHOULD SHARPEN

Regular verb: sharpen - sharpened - sharpened

Affirmation

Simple form	V-ing form
I'd sharpen you'd sharpen he'd sharpen we'd sharpen you'd sharpen they'd sharpen	I'd be sharpening you'd be sharpening he'd be sharpening we'd be sharpening you'd be sharpening they'd be sharpening
Perfect	V-ing perfect
I should've sharpened you should've sharpened he should've sharpened we should've sharpened you should've sharpened they should've sharpened	I should've been sharpening you should've been sharpening he should've been sharpening we should've been sharpening you should've been sharpening they should've been sharpening

Negation

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

Interrogative form

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

Interro-negative form

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