Rule reminder
Match the English modal clause to the correct Italian construction: 'as if' → come se + subjunctive; 'without (someone) doing' → senza che + subjunctive; 'without doing' (same subject) → senza + infinitive; 'by doing' → gerundio; 'almost as if' (literary) → quasi / quasi che + subjunctive.
English: 'She left the room without anyone noticing.'