I can switch you can switch he can switch we can switch you can switch they can switch
Forma con V-ing
I can be switching you can be switching he can be switching we can be switching you can be switching they can be switching
Perfecto
I can have switched you can have switched he 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 he can have been switching we can have been switching you can have been switching they can have been switching
Negación
Forma simple
I can't switch you can't switch he can't switch we can't switch you can't switch they can't switch
Forma con V-ing
I can't be switching you can't be switching he can't be switching we can't be switching you can't be switching they can't be switching
Perfecto
I can't have switched you can't have switched he can't have switched we can't have switched you can't have switched they can't have switched
Perfecto con V-ing
I can't have been switching you can't have been switching he can't have been switching we can't have been switching you can't have been switching they can't have been switching
Forma interrogativa
Forma simple
can I switch? can you switch? can he switch? can we switch? can you switch? can they switch?
Forma con V-ing
can I be switching? can you be switching? can he be switching? can we be switching? can you be switching? can they be switching?
Perfecto
can I have switched? can you have switched? can he 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 he have been switching? can we have been switching? can you have been switching? can they have been switching?
Forma interro-negativa
Forma simple
can't I switch? can't you switch? can't he switch? can't we switch? can't you switch? can't they switch?
Forma con V-ing
can't I be switching? can't you be switching? can't he be switching? can't we be switching? can't you be switching? can't they be switching?
Perfecto
can't I have switched? can't you have switched? can't he have switched? can't we have switched? can't you have switched? can't they have switched?
Perfecto con V-ing
can't I have been switching? can't you have been switching? can't he have been switching? can't we have been switching? can't you have been switching? can't they have been switching?