Rule reminder

After perception verbs, the infinitive can be: (1) active: 'Ho visto arrivare Marco'; (2) reflexive: 'L'ho vista alzarsi' (I saw her get up); (3) passive (using 'essere + past participle' or 'venire + past participle'): 'Ho visto demolire il palazzo' (I saw the building demolished — agent not specified). Passive infinitives are also possible: 'Ho visto essere demolito il palazzo'.