I could sing you could sing he could sing we could sing you could sing they could sing
Forma con V-ing
I could be singing you could be singing he could be singing we could be singing you could be singing they could be singing
Perfetto
I could have sung you could have sung he could have sung we could have sung you could have sung they could have sung
Perfetto con V-ing
I could have been singing you could have been singing he could have been singing we could have been singing you could have been singing they could have been singing
Negazione
Forma semplice
I couldn't sing you couldn't sing he couldn't sing we couldn't sing you couldn't sing they couldn't sing
Forma con V-ing
I couldn't be singing you couldn't be singing he couldn't be singing we couldn't be singing you couldn't be singing they couldn't be singing
Perfetto
I couldn't have sung you couldn't have sung he couldn't have sung we couldn't have sung you couldn't have sung they couldn't have sung
Perfetto con V-ing
I couldn't have been singing you couldn't have been singing he couldn't have been singing we couldn't have been singing you couldn't have been singing they couldn't have been singing
Forma interrogativa
Forma semplice
could I sing? could you sing? could he sing? could we sing? could you sing? could they sing?
Forma con V-ing
could I be singing? could you be singing? could he be singing? could we be singing? could you be singing? could they be singing?
Perfetto
could I have sung? could you have sung? could he have sung? could we have sung? could you have sung? could they have sung?
Perfetto con V-ing
could I have been singing? could you have been singing? could he have been singing? could we have been singing? could you have been singing? could they have been singing?
Forma interro-negativa
Forma semplice
couldn't I sing? couldn't you sing? couldn't he sing? couldn't we sing? couldn't you sing? couldn't they sing?
Forma con V-ing
couldn't I be singing? couldn't you be singing? couldn't he be singing? couldn't we be singing? couldn't you be singing? couldn't they be singing?
Perfetto
couldn't I have sung? couldn't you have sung? couldn't he have sung? couldn't we have sung? couldn't you have sung? couldn't they have sung?
Perfetto con V-ing
couldn't I have been singing? couldn't you have been singing? couldn't he have been singing? couldn't we have been singing? couldn't you have been singing? couldn't they have been singing?