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