Conjugación del verbo inglés
COULD EXPAND

Verbo regular: expand - expanded - expanded

Afirmación

Forma simple	Forma con V-ing
I could expand you could expand he could expand we could expand you could expand they could expand	I could be expanding you could be expanding he could be expanding we could be expanding you could be expanding they could be expanding
Perfecto	Perfecto con V-ing
I could have expanded you could have expanded he could have expanded we could have expanded you could have expanded they could have expanded	I could have been expanding you could have been expanding he could have been expanding we could have been expanding you could have been expanding they could have been expanding

Negación

Forma simple	Forma con V-ing
I could not expand you could not expand he could not expand we could not expand you could not expand they could not expand	I could not be expanding you could not be expanding he could not be expanding we could not be expanding you could not be expanding they could not be expanding
Perfecto	Perfecto con V-ing
I could not have expanded you could not have expanded he could not have expanded we could not have expanded you could not have expanded they could not have expanded	I could not have been expanding you could not have been expanding he could not have been expanding we could not have been expanding you could not have been expanding they could not have been expanding

Forma interrogativa

Forma simple	Forma con V-ing
could I expand? could you expand? could he expand? could we expand? could you expand? could they expand?	could I be expanding? could you be expanding? could he be expanding? could we be expanding? could you be expanding? could they be expanding?
Perfecto	Perfecto con V-ing
could I have expanded? could you have expanded? could he have expanded? could we have expanded? could you have expanded? could they have expanded?	could I have been expanding? could you have been expanding? could he have been expanding? could we have been expanding? could you have been expanding? could they have been expanding?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not expand? could you not expand? could he not expand? could we not expand? could you not expand? could they not expand?	could I not be expanding? could you not be expanding? could he not be expanding? could we not be expanding? could you not be expanding? could they not be expanding?
Perfecto	Perfecto con V-ing
could I not have expanded? could you not have expanded? could he not have expanded? could we not have expanded? could you not have expanded? could they not have expanded?	could I not have been expanding? could you not have been expanding? could he not have been expanding? could we not have been expanding? could you not have been expanding? could they not have been expanding?