Did you come alone?
'Venuto/venuta' = veh-NOO-toh/tah. The past participle of 'venire' must agree with the subject's gender.
Use at a party, event, or social gathering when you notice someone without a group. It's casual and friendly. Adjust the ending based on the person's gender: venuto (male), venuta (female).
The passato prossimo of 'venire' uses 'essere' as the auxiliary: 'sei venuto/a.' Past participles with essere agree in gender and number with the subject. 'Da solo/a' means 'alone' — solo (male), sola (female).
Sei con qualcuno?
Are you with someone?
Present-focused — asks about current company rather than how they arrived.
Con chi sei venuto/a?
Who did you come with?
Assumes they're not alone — use only if you've spotted them with someone.
Conosci qualcuno qui?
Do you know anyone here?
More social — opens conversation about mutual contacts.
Inviting someone who is alone to join your group ('unirsi') is a common and genuinely kind gesture in Italian social culture. Refusing such an invitation without a good reason can seem cold.