I could quiver you could quiver she could quiver we could quiver you could quiver they could quiver
Forma con V-ing
I could be quivering you could be quivering she could be quivering we could be quivering you could be quivering they could be quivering
Perfetto
I could have quivered you could have quivered she could have quivered we could have quivered you could have quivered they could have quivered
Perfetto con V-ing
I could have been quivering you could have been quivering she could have been quivering we could have been quivering you could have been quivering they could have been quivering
Negazione
Forma semplice
I couldn't quiver you couldn't quiver she couldn't quiver we couldn't quiver you couldn't quiver they couldn't quiver
Forma con V-ing
I couldn't be quivering you couldn't be quivering she couldn't be quivering we couldn't be quivering you couldn't be quivering they couldn't be quivering
Perfetto
I couldn't have quivered you couldn't have quivered she couldn't have quivered we couldn't have quivered you couldn't have quivered they couldn't have quivered
Perfetto con V-ing
I couldn't have been quivering you couldn't have been quivering she couldn't have been quivering we couldn't have been quivering you couldn't have been quivering they couldn't have been quivering
Forma interrogativa
Forma semplice
could I quiver? could you quiver? could she quiver? could we quiver? could you quiver? could they quiver?
Forma con V-ing
could I be quivering? could you be quivering? could she be quivering? could we be quivering? could you be quivering? could they be quivering?
Perfetto
could I have quivered? could you have quivered? could she have quivered? could we have quivered? could you have quivered? could they have quivered?
Perfetto con V-ing
could I have been quivering? could you have been quivering? could she have been quivering? could we have been quivering? could you have been quivering? could they have been quivering?
Forma interro-negativa
Forma semplice
couldn't I quiver? couldn't you quiver? couldn't she quiver? couldn't we quiver? couldn't you quiver? couldn't they quiver?
Forma con V-ing
couldn't I be quivering? couldn't you be quivering? couldn't she be quivering? couldn't we be quivering? couldn't you be quivering? couldn't they be quivering?
Perfetto
couldn't I have quivered? couldn't you have quivered? couldn't she have quivered? couldn't we have quivered? couldn't you have quivered? couldn't they have quivered?
Perfetto con V-ing
couldn't I have been quivering? couldn't you have been quivering? couldn't she have been quivering? couldn't we have been quivering? couldn't you have been quivering? couldn't they have been quivering?