don't I estimate? don't you estimate? doesn't he estimate? don't we estimate? don't you estimate? don't they estimate?
Presente contínuo
am I not estimating? aren't you estimating? isn't he estimating? aren't we estimating? aren't you estimating? aren't they estimating?
Pretérito
didn't I estimate? didn't you estimate? didn't he estimate? didn't we estimate? didn't you estimate? didn't they estimate?
Preterito contínuo
wasn't I estimating? weren't you estimating? wasn't he estimating? weren't we estimating? weren't you estimating? weren't they estimating?
Presente perfeito
haven't I estimated? haven't you estimated? hasn't he estimated? haven't we estimated? haven't you estimated? haven't they estimated?
Presente perfeito contínuo
haven't I been estimating? haven't you been estimating? hasn't he been estimating? haven't we been estimating? haven't you been estimating? haven't they been estimating?
Mais perfeito
hadn't I estimated? hadn't you estimated? hadn't he estimated? hadn't we estimated? hadn't you estimated? hadn't they estimated?
Contínuo mais perfeito
hadn't I been estimating? hadn't you been estimating? hadn't he been estimating? hadn't we been estimating? hadn't you been estimating? hadn't they been estimating?
Futuro
won't I estimate? won't you estimate? won't he estimate? won't we estimate? won't you estimate? won't they estimate?
Futuro contínuo
won't I be estimating? won't you be estimating? won't he be estimating? won't we be estimating? won't you be estimating? won't they be estimating?
futuro perfeito
won't I have estimated? won't you have estimated? won't he have estimated? won't we have estimated? won't you have estimated? won't they have estimated?
futuro perfeito contínuo
won't I have been estimating? won't you have been estimating? won't he have been estimating? won't we have been estimating? won't you have been estimating? won't they have been estimating?
Condicional
Presente
wouldn't I estimate? wouldn't you estimate? wouldn't he estimate? wouldn't we estimate? wouldn't you estimate? wouldn't they estimate?
Presente contínuo
wouldn't I be estimating? wouldn't you be estimating? wouldn't he be estimating? wouldn't we be estimating? wouldn't you be estimating? wouldn't they be estimating?
Passado
wouldn't I have estimated? wouldn't you have estimated? wouldn't he have estimated? wouldn't we have estimated? wouldn't you have estimated? wouldn't they have estimated?
Passado contínuo
wouldn't I have been estimating? wouldn't you have been estimating? wouldn't he have been estimating? wouldn't we have been estimating? wouldn't you have been estimating? wouldn't they have been estimating?