After summing up about the passive voice, Daniela goes on to talk about some other related constructions. It's important to remember that the passive is formed with transitive verbs only. But when we don't have a named subject or agent, we have a few other ways to make a sentence passive-like. One way uses the famous particella (particle) si. Si is used for so many things in Italian that it is bound to create confusion for learners, even advanced learners. Don't worry, part 3 of the lesson will explain further. Another way uses the verb andare (to go) to indicate something that must be done. Here too, the stress is on the action, not the subject or agent.
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