do I fasten? do you fasten? does he fasten? do we fasten? do you fasten? do they fasten?
Presente contínuo
am I fastening? are you fastening? is he fastening? are we fastening? are you fastening? are they fastening?
Pretérito
did I fasten? did you fasten? did he fasten? did we fasten? did you fasten? did they fasten?
Preterito contínuo
was I fastening? were you fastening? was he fastening? were we fastening? were you fastening? were they fastening?
Presente perfeito
have I fastened? have you fastened? has he fastened? have we fastened? have you fastened? have they fastened?
Presente perfeito contínuo
have I been fastening? have you been fastening? has he been fastening? have we been fastening? have you been fastening? have they been fastening?
Mais perfeito
had I fastened? had you fastened? had he fastened? had we fastened? had you fastened? had they fastened?
Contínuo mais perfeito
had I been fastening? had you been fastening? had he been fastening? had we been fastening? had you been fastening? had they been fastening?
Futuro
will I fasten? will you fasten? will he fasten? will we fasten? will you fasten? will they fasten?
Futuro contínuo
will I be fastening? will you be fastening? will he be fastening? will we be fastening? will you be fastening? will they be fastening?
futuro perfeito
will I have fastened? will you have fastened? will he have fastened? will we have fastened? will you have fastened? will they have fastened?
futuro perfeito contínuo
will I have been fastening? will you have been fastening? will he have been fastening? will we have been fastening? will you have been fastening? will they have been fastening?
Condicional
Presente
would I fasten? would you fasten? would he fasten? would we fasten? would you fasten? would they fasten?
Presente contínuo
would I be fastening? would you be fastening? would he be fastening? would we be fastening? would you be fastening? would they be fastening?
Passado
would I have fastened? would you have fastened? would he have fastened? would we have fastened? would you have fastened? would they have fastened?
Passado contínuo
would I have been fastening? would you have been fastening? would he have been fastening? would we have been fastening? would you have been fastening? would they have been fastening?