I could react you could react he could react we could react you could react they could react
Forma con V-ing
I could be reacting you could be reacting he could be reacting we could be reacting you could be reacting they could be reacting
Perfecto
I could have reacted you could have reacted he could have reacted we could have reacted you could have reacted they could have reacted
Perfecto con V-ing
I could have been reacting you could have been reacting he could have been reacting we could have been reacting you could have been reacting they could have been reacting
Negación
Forma simple
I couldn't react you couldn't react he couldn't react we couldn't react you couldn't react they couldn't react
Forma con V-ing
I couldn't be reacting you couldn't be reacting he couldn't be reacting we couldn't be reacting you couldn't be reacting they couldn't be reacting
Perfecto
I couldn't have reacted you couldn't have reacted he couldn't have reacted we couldn't have reacted you couldn't have reacted they couldn't have reacted
Perfecto con V-ing
I couldn't have been reacting you couldn't have been reacting he couldn't have been reacting we couldn't have been reacting you couldn't have been reacting they couldn't have been reacting
Forma interrogativa
Forma simple
could I react? could you react? could he react? could we react? could you react? could they react?
Forma con V-ing
could I be reacting? could you be reacting? could he be reacting? could we be reacting? could you be reacting? could they be reacting?
Perfecto
could I have reacted? could you have reacted? could he have reacted? could we have reacted? could you have reacted? could they have reacted?
Perfecto con V-ing
could I have been reacting? could you have been reacting? could he have been reacting? could we have been reacting? could you have been reacting? could they have been reacting?
Forma interro-negativa
Forma simple
couldn't I react? couldn't you react? couldn't he react? couldn't we react? couldn't you react? couldn't they react?
Forma con V-ing
couldn't I be reacting? couldn't you be reacting? couldn't he be reacting? couldn't we be reacting? couldn't you be reacting? couldn't they be reacting?
Perfecto
couldn't I have reacted? couldn't you have reacted? couldn't he have reacted? couldn't we have reacted? couldn't you have reacted? couldn't they have reacted?
Perfecto con V-ing
couldn't I have been reacting? couldn't you have been reacting? couldn't he have been reacting? couldn't we have been reacting? couldn't you have been reacting? couldn't they have been reacting?