I could work you could work he could work we could work you could work they could work
Forma con V-ing
I could be working you could be working he could be working we could be working you could be working they could be working
Perfetto
I could have worked you could have worked he could have worked we could have worked you could have worked they could have worked
Perfetto con V-ing
I could have been working you could have been working he could have been working we could have been working you could have been working they could have been working
Negazione
Forma semplice
I could not work you could not work he could not work we could not work you could not work they could not work
Forma con V-ing
I could not be working you could not be working he could not be working we could not be working you could not be working they could not be working
Perfetto
I could not have worked you could not have worked he could not have worked we could not have worked you could not have worked they could not have worked
Perfetto con V-ing
I could not have been working you could not have been working he could not have been working we could not have been working you could not have been working they could not have been working
Forma interrogativa
Forma semplice
could I work? could you work? could he work? could we work? could you work? could they work?
Forma con V-ing
could I be working? could you be working? could he be working? could we be working? could you be working? could they be working?
Perfetto
could I have worked? could you have worked? could he have worked? could we have worked? could you have worked? could they have worked?
Perfetto con V-ing
could I have been working? could you have been working? could he have been working? could we have been working? could you have been working? could they have been working?
Forma interro-negativa
Forma semplice
could I not work? could you not work? could he not work? could we not work? could you not work? could they not work?
Forma con V-ing
could I not be working? could you not be working? could he not be working? could we not be working? could you not be working? could they not be working?
Perfetto
could I not have worked? could you not have worked? could he not have worked? could we not have worked? could you not have worked? could they not have worked?
Perfetto con V-ing
could I not have been working? could you not have been working? could he not have been working? could we not have been working? could you not have been working? could they not have been working?