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