don't I doubt? don't you doubt? doesn't he doubt? don't we doubt? don't you doubt? don't they doubt?
Presente continuo
am I not doubting? aren't you doubting? isn't he doubting? aren't we doubting? aren't you doubting? aren't they doubting?
Pretérito
didn't I doubt? didn't you doubt? didn't he doubt? didn't we doubt? didn't you doubt? didn't they doubt?
Pretérito continuo
wasn't I doubting? weren't you doubting? wasn't he doubting? weren't we doubting? weren't you doubting? weren't they doubting?
Presente perfecto
haven't I doubted? haven't you doubted? hasn't he doubted? haven't we doubted? haven't you doubted? haven't they doubted?
Presente perfecto continuo
haven't I been doubting? haven't you been doubting? hasn't he been doubting? haven't we been doubting? haven't you been doubting? haven't they been doubting?
Pluscuamperfecto
hadn't I doubted? hadn't you doubted? hadn't he doubted? hadn't we doubted? hadn't you doubted? hadn't they doubted?
Pluscuamperfecto continuo
hadn't I been doubting? hadn't you been doubting? hadn't he been doubting? hadn't we been doubting? hadn't you been doubting? hadn't they been doubting?
Futuro simple
won't I doubt? won't you doubt? won't he doubt? won't we doubt? won't you doubt? won't they doubt?
Futuro continuo
won't I be doubting? won't you be doubting? won't he be doubting? won't we be doubting? won't you be doubting? won't they be doubting?
Futuro perfecto
won't I have doubted? won't you have doubted? won't he have doubted? won't we have doubted? won't you have doubted? won't they have doubted?
Futuro perfecto contínuo
won't I have been doubting? won't you have been doubting? won't he have been doubting? won't we have been doubting? won't you have been doubting? won't they have been doubting?
Condicional
Presente
wouldn't I doubt? wouldn't you doubt? wouldn't he doubt? wouldn't we doubt? wouldn't you doubt? wouldn't they doubt?
Presente continuo
wouldn't I be doubting? wouldn't you be doubting? wouldn't he be doubting? wouldn't we be doubting? wouldn't you be doubting? wouldn't they be doubting?
Passado
wouldn't I have doubted? wouldn't you have doubted? wouldn't he have doubted? wouldn't we have doubted? wouldn't you have doubted? wouldn't they have doubted?
Passado continuo
wouldn't I have been doubting? wouldn't you have been doubting? wouldn't he have been doubting? wouldn't we have been doubting? wouldn't you have been doubting? wouldn't they have been doubting?