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