don't I litter? don't you litter? doesn't he litter? don't we litter? don't you litter? don't they litter?
Presente contínuo
am I not littering? aren't you littering? isn't he littering? aren't we littering? aren't you littering? aren't they littering?
Pretérito
didn't I litter? didn't you litter? didn't he litter? didn't we litter? didn't you litter? didn't they litter?
Preterito contínuo
wasn't I littering? weren't you littering? wasn't he littering? weren't we littering? weren't you littering? weren't they littering?
Presente perfeito
haven't I littered? haven't you littered? hasn't he littered? haven't we littered? haven't you littered? haven't they littered?
Presente perfeito contínuo
haven't I been littering? haven't you been littering? hasn't he been littering? haven't we been littering? haven't you been littering? haven't they been littering?
Mais perfeito
hadn't I littered? hadn't you littered? hadn't he littered? hadn't we littered? hadn't you littered? hadn't they littered?
Contínuo mais perfeito
hadn't I been littering? hadn't you been littering? hadn't he been littering? hadn't we been littering? hadn't you been littering? hadn't they been littering?
Futuro
won't I litter? won't you litter? won't he litter? won't we litter? won't you litter? won't they litter?
Futuro contínuo
won't I be littering? won't you be littering? won't he be littering? won't we be littering? won't you be littering? won't they be littering?
futuro perfeito
won't I have littered? won't you have littered? won't he have littered? won't we have littered? won't you have littered? won't they have littered?
futuro perfeito contínuo
won't I have been littering? won't you have been littering? won't he have been littering? won't we have been littering? won't you have been littering? won't they have been littering?
Condicional
Presente
wouldn't I litter? wouldn't you litter? wouldn't he litter? wouldn't we litter? wouldn't you litter? wouldn't they litter?
Presente contínuo
wouldn't I be littering? wouldn't you be littering? wouldn't he be littering? wouldn't we be littering? wouldn't you be littering? wouldn't they be littering?
Passado
wouldn't I have littered? wouldn't you have littered? wouldn't he have littered? wouldn't we have littered? wouldn't you have littered? wouldn't they have littered?
Passado contínuo
wouldn't I have been littering? wouldn't you have been littering? wouldn't he have been littering? wouldn't we have been littering? wouldn't you have been littering? wouldn't they have been littering?