do I not engineer? do you not engineer? does he not engineer? do we not engineer? do you not engineer? do they not engineer?
Presente contínuo
am I not engineering? are you not engineering? is he not engineering? are we not engineering? are you not engineering? are they not engineering?
Pretérito
did I not engineer? did you not engineer? did he not engineer? did we not engineer? did you not engineer? did they not engineer?
Preterito contínuo
was I not engineering? were you not engineering? was he not engineering? were we not engineering? were you not engineering? were they not engineering?
Presente perfeito
have I not engineered? have you not engineered? has he not engineered? have we not engineered? have you not engineered? have they not engineered?
Presente perfeito contínuo
have I not been engineering? have you not been engineering? has he not been engineering? have we not been engineering? have you not been engineering? have they not been engineering?
Mais perfeito
had I not engineered? had you not engineered? had he not engineered? had we not engineered? had you not engineered? had they not engineered?
Contínuo mais perfeito
had I not been engineering? had you not been engineering? had he not been engineering? had we not been engineering? had you not been engineering? had they not been engineering?
Futuro
will I not engineer? will you not engineer? will he not engineer? will we not engineer? will you not engineer? will they not engineer?
Futuro contínuo
will I not be engineering? will you not be engineering? will he not be engineering? will we not be engineering? will you not be engineering? will they not be engineering?
futuro perfeito
will I not have engineered? will you not have engineered? will he not have engineered? will we not have engineered? will you not have engineered? will they not have engineered?
futuro perfeito contínuo
will I not have been engineering? will you not have been engineering? will he not have been engineering? will we not have been engineering? will you not have been engineering? will they not have been engineering?
Condicional
Presente
would I not engineer? would you not engineer? would he not engineer? would we not engineer? would you not engineer? would they not engineer?
Presente contínuo
would I not be engineering? would you not be engineering? would he not be engineering? would we not be engineering? would you not be engineering? would they not be engineering?
Passado
would I not have engineered? would you not have engineered? would he not have engineered? would we not have engineered? would you not have engineered? would they not have engineered?
Passado contínuo
would I not have been engineering? would you not have been engineering? would he not have been engineering? would we not have been engineering? would you not have been engineering? would they not have been engineering?