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