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