don't I sharpen? don't you sharpen? doesn't she sharpen? don't we sharpen? don't you sharpen? don't they sharpen?
Present continuous
am I not sharpening? aren't you sharpening? isn't she sharpening? aren't we sharpening? aren't you sharpening? aren't they sharpening?
Preterite
didn't I sharpen? didn't you sharpen? didn't she sharpen? didn't we sharpen? didn't you sharpen? didn't they sharpen?
Preterite continuous
wasn't I sharpening? weren't you sharpening? wasn't she sharpening? weren't we sharpening? weren't you sharpening? weren't they sharpening?
Present perfect
haven't I sharpened? haven't you sharpened? hasn't she sharpened? haven't we sharpened? haven't you sharpened? haven't they sharpened?
Present perfect continuous
haven't I been sharpening? haven't you been sharpening? hasn't she been sharpening? haven't we been sharpening? haven't you been sharpening? haven't they been sharpening?
Pluperfect
hadn't I sharpened? hadn't you sharpened? hadn't she sharpened? hadn't we sharpened? hadn't you sharpened? hadn't they sharpened?
Pluperfect continuous
hadn't I been sharpening? hadn't you been sharpening? hadn't she been sharpening? hadn't we been sharpening? hadn't you been sharpening? hadn't they been sharpening?
Future
won't I sharpen? won't you sharpen? won't she sharpen? won't we sharpen? won't you sharpen? won't they sharpen?
Future continuous
won't I be sharpening? won't you be sharpening? won't she be sharpening? won't we be sharpening? won't you be sharpening? won't they be sharpening?
Future perfect
won't I have sharpened? won't you have sharpened? won't she have sharpened? won't we have sharpened? won't you have sharpened? won't they have sharpened?
Future perfect continuous
won't I have been sharpening? won't you have been sharpening? won't she have been sharpening? won't we have been sharpening? won't you have been sharpening? won't they have been sharpening?
Conditional
Present
wouldn't I sharpen? wouldn't you sharpen? wouldn't she sharpen? wouldn't we sharpen? wouldn't you sharpen? wouldn't they sharpen?
Present continuous
wouldn't I be sharpening? wouldn't you be sharpening? wouldn't she be sharpening? wouldn't we be sharpening? wouldn't you be sharpening? wouldn't they be sharpening?
Past
wouldn't I have sharpened? wouldn't you have sharpened? wouldn't she have sharpened? wouldn't we have sharpened? wouldn't you have sharpened? wouldn't they have sharpened?
Past continuous
wouldn't I have been sharpening? wouldn't you have been sharpening? wouldn't she have been sharpening? wouldn't we have been sharpening? wouldn't you have been sharpening? wouldn't they have been sharpening?