don't I understand? don't you understand? doesn't he understand? don't we understand? don't you understand? don't they understand?
Présent continu
am I not understanding? aren't you understanding? isn't he understanding? aren't we understanding? aren't you understanding? aren't they understanding?
Prétérit
didn't I understand? didn't you understand? didn't he understand? didn't we understand? didn't you understand? didn't they understand?
Prétérit
wasn't I understanding? weren't you understanding? wasn't he understanding? weren't we understanding? weren't you understanding? weren't they understanding?
Present perfect
haven't I understood? haven't you understood? hasn't he understood? haven't we understood? haven't you understood? haven't they understood?
Present perfect continu
haven't I been understanding? haven't you been understanding? hasn't he been understanding? haven't we been understanding? haven't you been understanding? haven't they been understanding?
Pluperfect
hadn't I understood? hadn't you understood? hadn't he understood? hadn't we understood? hadn't you understood? hadn't they understood?
Pluperfect continu
hadn't I been understanding? hadn't you been understanding? hadn't he been understanding? hadn't we been understanding? hadn't you been understanding? hadn't they been understanding?
Futur
won't I understand? won't you understand? won't he understand? won't we understand? won't you understand? won't they understand?
Futur continu
won't I be understanding? won't you be understanding? won't he be understanding? won't we be understanding? won't you be understanding? won't they be understanding?
Futur antérieur
won't I have understood? won't you have understood? won't he have understood? won't we have understood? won't you have understood? won't they have understood?
Futur antérieur continu
won't I have been understanding? won't you have been understanding? won't he have been understanding? won't we have been understanding? won't you have been understanding? won't they have been understanding?
Conditionnel
Présent
wouldn't I understand? wouldn't you understand? wouldn't he understand? wouldn't we understand? wouldn't you understand? wouldn't they understand?
Présent continu
wouldn't I be understanding? wouldn't you be understanding? wouldn't he be understanding? wouldn't we be understanding? wouldn't you be understanding? wouldn't they be understanding?
Passé
wouldn't I have understood? wouldn't you have understood? wouldn't he have understood? wouldn't we have understood? wouldn't you have understood? wouldn't they have understood?
Passé continu
wouldn't I have been understanding? wouldn't you have been understanding? wouldn't he have been understanding? wouldn't we have been understanding? wouldn't you have been understanding? wouldn't they have been understanding?