The Passive Voice is a "focus structure". In this case, we change the traditional focus on the person that we have in active voice, and we pay more attention to the object.

For example:

• Active voice: Botero painted this Mona Lisa.

• Passive voice: This Mona Lisa was painted by Botero.

In the Passive Voice, the object is the most important, so we change it to the subject position.

Check the presentation below to learn more about this structure.