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