do I join? do you join? does he join? do we join? do you join? do they join?
Present continuous
am I joining? are you joining? is he joining? are we joining? are you joining? are they joining?
Preterite
did I join? did you join? did he join? did we join? did you join? did they join?
Preterite continuous
was I joining? were you joining? was he joining? were we joining? were you joining? were they joining?
Present perfect
have I joined? have you joined? has he joined? have we joined? have you joined? have they joined?
Present perfect continuous
have I been joining? have you been joining? has he been joining? have we been joining? have you been joining? have they been joining?
Pluperfect
had I joined? had you joined? had he joined? had we joined? had you joined? had they joined?
Pluperfect continuous
had I been joining? had you been joining? had he been joining? had we been joining? had you been joining? had they been joining?
Future
will I join? will you join? will he join? will we join? will you join? will they join?
Future continuous
will I be joining? will you be joining? will he be joining? will we be joining? will you be joining? will they be joining?
Future perfect
will I have joined? will you have joined? will he have joined? will we have joined? will you have joined? will they have joined?
Future perfect continuous
will I have been joining? will you have been joining? will he have been joining? will we have been joining? will you have been joining? will they have been joining?
Conditional
Present
would I join? would you join? would he join? would we join? would you join? would they join?
Present continuous
would I be joining? would you be joining? would he be joining? would we be joining? would you be joining? would they be joining?
Past
would I have joined? would you have joined? would he have joined? would we have joined? would you have joined? would they have joined?
Past continuous
would I have been joining? would you have been joining? would he have been joining? would we have been joining? would you have been joining? would they have been joining?