if not
Se non ci ascolti avremo un bel problema.
If you don't listen to us, we're going to have a real problem.
— Dal cuore (1998)
If they don't tell us anything, ..
— The Experiment - Cercasi cavie umane (2001)
Se non ci fossero telefoni, sarebbe sconveniente.
If there were no telephones, it would be inconvenient.
E se non ci fosse la testata nucleare?
What if there was no nuclear warhead?
— Wolf Call - Minaccia in alto mare (2019)
Se non ci fosse il sole non potremmo vivere.
If there were no sun we couldn't live.