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