I can quiver you can quiver he can quiver we can quiver you can quiver they can quiver
Forma con V-ing
I can be quivering you can be quivering he can be quivering we can be quivering you can be quivering they can be quivering
Perfecto
I can have quivered you can have quivered he can have quivered we can have quivered you can have quivered they can have quivered
Perfecto con V-ing
I can have been quivering you can have been quivering he can have been quivering we can have been quivering you can have been quivering they can have been quivering
Negación
Forma simple
I cannot quiver you cannot quiver he cannot quiver we cannot quiver you cannot quiver they cannot quiver
Forma con V-ing
I cannot be quivering you cannot be quivering he cannot be quivering we cannot be quivering you cannot be quivering they cannot be quivering
Perfecto
I cannot have quivered you cannot have quivered he cannot have quivered we cannot have quivered you cannot have quivered they cannot have quivered
Perfecto con V-ing
I cannot have been quivering you cannot have been quivering he cannot have been quivering we cannot have been quivering you cannot have been quivering they cannot have been quivering
Forma interrogativa
Forma simple
can I quiver? can you quiver? can he quiver? can we quiver? can you quiver? can they quiver?
Forma con V-ing
can I be quivering? can you be quivering? can he be quivering? can we be quivering? can you be quivering? can they be quivering?
Perfecto
can I have quivered? can you have quivered? can he have quivered? can we have quivered? can you have quivered? can they have quivered?
Perfecto con V-ing
can I have been quivering? can you have been quivering? can he have been quivering? can we have been quivering? can you have been quivering? can they have been quivering?
Forma interro-negativa
Forma simple
can I not quiver? can you not quiver? can he not quiver? can we not quiver? can you not quiver? can they not quiver?
Forma con V-ing
can I not be quivering? can you not be quivering? can he not be quivering? can we not be quivering? can you not be quivering? can they not be quivering?
Perfecto
can I not have quivered? can you not have quivered? can he not have quivered? can we not have quivered? can you not have quivered? can they not have quivered?
Perfecto con V-ing
can I not have been quivering? can you not have been quivering? can he not have been quivering? can we not have been quivering? can you not have been quivering? can they not have been quivering?