Conjugación del verbo inglés
COULD QUIVER

Verbo regular: quiver - quivered - quivered

Afirmación

Forma simple	Forma con V-ing
I could quiver you could quiver she could quiver we could quiver you could quiver they could quiver	I could be quivering you could be quivering she could be quivering we could be quivering you could be quivering they could be quivering
Perfecto	Perfecto con V-ing
I could have quivered you could have quivered she could have quivered we could have quivered you could have quivered they could have quivered	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

Negación

Forma simple	Forma con V-ing
I couldn't quiver you couldn't quiver she couldn't quiver we couldn't quiver you couldn't quiver they couldn't quiver	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
Perfecto	Perfecto con V-ing
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	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 simple	Forma con V-ing
could I quiver? could you quiver? could she quiver? could we quiver? could you quiver? could they quiver?	could I be quivering? could you be quivering? could she be quivering? could we be quivering? could you be quivering? could they be quivering?
Perfecto	Perfecto con V-ing
could I have quivered? could you have quivered? could she have quivered? could we have quivered? could you have quivered? could they have quivered?	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 simple	Forma con V-ing
couldn't I quiver? couldn't you quiver? couldn't she quiver? couldn't we quiver? couldn't you quiver? couldn't they quiver?	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?
Perfecto	Perfecto con V-ing
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?	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?