I can switch you can switch she can switch we can switch you can switch they can switch
Forma con V-ing
I can be switching you can be switching she can be switching we can be switching you can be switching they can be switching
Perfecto
I can have switched you can have switched she can have switched we can have switched you can have switched they can have switched
Perfecto con V-ing
I can have been switching you can have been switching she can have been switching we can have been switching you can have been switching they can have been switching
Negación
Forma simple
I cannot switch you cannot switch she cannot switch we cannot switch you cannot switch they cannot switch
Forma con V-ing
I cannot be switching you cannot be switching she cannot be switching we cannot be switching you cannot be switching they cannot be switching
Perfecto
I cannot have switched you cannot have switched she cannot have switched we cannot have switched you cannot have switched they cannot have switched
Perfecto con V-ing
I cannot have been switching you cannot have been switching she cannot have been switching we cannot have been switching you cannot have been switching they cannot have been switching
Forma interrogativa
Forma simple
can I switch? can you switch? can she switch? can we switch? can you switch? can they switch?
Forma con V-ing
can I be switching? can you be switching? can she be switching? can we be switching? can you be switching? can they be switching?
Perfecto
can I have switched? can you have switched? can she have switched? can we have switched? can you have switched? can they have switched?
Perfecto con V-ing
can I have been switching? can you have been switching? can she have been switching? can we have been switching? can you have been switching? can they have been switching?
Forma interro-negativa
Forma simple
can I not switch? can you not switch? can she not switch? can we not switch? can you not switch? can they not switch?
Forma con V-ing
can I not be switching? can you not be switching? can she not be switching? can we not be switching? can you not be switching? can they not be switching?
Perfecto
can I not have switched? can you not have switched? can she not have switched? can we not have switched? can you not have switched? can they not have switched?
Perfecto con V-ing
can I not have been switching? can you not have been switching? can she not have been switching? can we not have been switching? can you not have been switching? can they not have been switching?