don't I estimate? don't you estimate? doesn't she estimate? don't we estimate? don't you estimate? don't they estimate?
Presente continuo
am I not estimating? aren't you estimating? isn't she estimating? aren't we estimating? aren't you estimating? aren't they estimating?
Pretérito
didn't I estimate? didn't you estimate? didn't she estimate? didn't we estimate? didn't you estimate? didn't they estimate?
Pretérito continuo
wasn't I estimating? weren't you estimating? wasn't she estimating? weren't we estimating? weren't you estimating? weren't they estimating?
Presente perfecto
haven't I estimated? haven't you estimated? hasn't she estimated? haven't we estimated? haven't you estimated? haven't they estimated?
Presente perfecto continuo
haven't I been estimating? haven't you been estimating? hasn't she been estimating? haven't we been estimating? haven't you been estimating? haven't they been estimating?
Pluscuamperfecto
hadn't I estimated? hadn't you estimated? hadn't she estimated? hadn't we estimated? hadn't you estimated? hadn't they estimated?
Pluscuamperfecto continuo
hadn't I been estimating? hadn't you been estimating? hadn't she been estimating? hadn't we been estimating? hadn't you been estimating? hadn't they been estimating?
Futuro simple
won't I estimate? won't you estimate? won't she estimate? won't we estimate? won't you estimate? won't they estimate?
Futuro continuo
won't I be estimating? won't you be estimating? won't she be estimating? won't we be estimating? won't you be estimating? won't they be estimating?
Futuro perfecto
won't I have estimated? won't you have estimated? won't she have estimated? won't we have estimated? won't you have estimated? won't they have estimated?
Futuro perfecto contínuo
won't I have been estimating? won't you have been estimating? won't she 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 she estimate? wouldn't we estimate? wouldn't you estimate? wouldn't they estimate?
Presente continuo
wouldn't I be estimating? wouldn't you be estimating? wouldn't she 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 she have estimated? wouldn't we have estimated? wouldn't you have estimated? wouldn't they have estimated?
Passado continuo
wouldn't I have been estimating? wouldn't you have been estimating? wouldn't she have been estimating? wouldn't we have been estimating? wouldn't you have been estimating? wouldn't they have been estimating?