don't I back? don't you back? doesn't he back? don't we back? don't you back? don't they back?
Presente continuo
am I not backing? aren't you backing? isn't he backing? aren't we backing? aren't you backing? aren't they backing?
Preterito
didn't I back? didn't you back? didn't he back? didn't we back? didn't you back? didn't they back?
Preterite continua
wasn't I backing? weren't you backing? wasn't he backing? weren't we backing? weren't you backing? weren't they backing?
Presente perfetto
haven't I backed? haven't you backed? hasn't he backed? haven't we backed? haven't you backed? haven't they backed?
Presente perfetto continuo
haven't I been backing? haven't you been backing? hasn't he been backing? haven't we been backing? haven't you been backing? haven't they been backing?
Piuccheperfetto
hadn't I backed? hadn't you backed? hadn't he backed? hadn't we backed? hadn't you backed? hadn't they backed?
Piuccheperfetto continuo
hadn't I been backing? hadn't you been backing? hadn't he been backing? hadn't we been backing? hadn't you been backing? hadn't they been backing?
Futuro semplice
won't I back? won't you back? won't he back? won't we back? won't you back? won't they back?
Futuro continuo
won't I be backing? won't you be backing? won't he be backing? won't we be backing? won't you be backing? won't they be backing?
Futuro anteriore
won't I have backed? won't you have backed? won't he have backed? won't we have backed? won't you have backed? won't they have backed?
Futuro anteriore contínuo
won't I have been backing? won't you have been backing? won't he have been backing? won't we have been backing? won't you have been backing? won't they have been backing?
Condizionale
Presente
wouldn't I back? wouldn't you back? wouldn't he back? wouldn't we back? wouldn't you back? wouldn't they back?
Presente continuo
wouldn't I be backing? wouldn't you be backing? wouldn't he be backing? wouldn't we be backing? wouldn't you be backing? wouldn't they be backing?
Passato
wouldn't I have backed? wouldn't you have backed? wouldn't he have backed? wouldn't we have backed? wouldn't you have backed? wouldn't they have backed?
Passato continuo
wouldn't I have been backing? wouldn't you have been backing? wouldn't he have been backing? wouldn't we have been backing? wouldn't you have been backing? wouldn't they have been backing?