do I not join? do you not join? does he not join? do we not join? do you not join? do they not join?
Present continuous
am I not joining? are you not joining? is he not joining? are we not joining? are you not joining? are they not joining?
Preterite
did I not join? did you not join? did he not join? did we not join? did you not join? did they not join?
Preterite continuous
was I not joining? were you not joining? was he not joining? were we not joining? were you not joining? were they not joining?
Present perfect
have I not joined? have you not joined? has he not joined? have we not joined? have you not joined? have they not joined?
Present perfect continuous
have I not been joining? have you not been joining? has he not been joining? have we not been joining? have you not been joining? have they not been joining?
Pluperfect
had I not joined? had you not joined? had he not joined? had we not joined? had you not joined? had they not joined?
Pluperfect continuous
had I not been joining? had you not been joining? had he not been joining? had we not been joining? had you not been joining? had they not been joining?
Future
will I not join? will you not join? will he not join? will we not join? will you not join? will they not join?
Future continuous
will I not be joining? will you not be joining? will he not be joining? will we not be joining? will you not be joining? will they not be joining?
Future perfect
will I not have joined? will you not have joined? will he not have joined? will we not have joined? will you not have joined? will they not have joined?
Future perfect continuous
will I not have been joining? will you not have been joining? will he not have been joining? will we not have been joining? will you not have been joining? will they not have been joining?
Conditional
Present
would I not join? would you not join? would he not join? would we not join? would you not join? would they not join?
Present continuous
would I not be joining? would you not be joining? would he not be joining? would we not be joining? would you not be joining? would they not be joining?
Past
would I not have joined? would you not have joined? would he not have joined? would we not have joined? would you not have joined? would they not have joined?
Past continuous
would I not have been joining? would you not have been joining? would he not have been joining? would we not have been joining? would you not have been joining? would they not have been joining?