This is the 2567th most frequent Spanish word.
comenzado
"Comenzado" means "started" or "begun."
In this sentence, 'comenzado' is used as the past participle conjugation of the verb 'comenzar', employed in perfect tense form linked with 'ha' (has) to express an action that has recently or definitively happened.
El proyecto ha comenzado exitosamente.
The project has started successfully.
Here, 'comenzado' acts as the past participle of 'comenzar', forming passive voice structures to speak about the upcoming initiation of the event.
Tenemos todo preparado para el evento, que será comenzado mañana.
We have everything prepared for the event, which will be started tomorrow.
Here, 'comenzado' is connected with 'he' (I have) constructing the present perfect tense to describe the initiation of learning Spanish happening a month in the past.