to begin; to commence; to be started (intransitive)
Der Vortrag hat begonnen. — “The lecture has begun.”
to start something; to begin something (chiefly literary, transitive or with mit)
Er hat den Vortrag begonnen. — “He has started the lecture.”
Er hat mit dem Vortrag begonnen. — “He has started the lecture.”
About German Verb "beginnen"
The German verb beginnen is one of the most commonly used German verbs. According to our analysis of 100,000+ German news articles, beginnen is the 47th most used verb. Our data on the German verb beginnen comes from Wiktionary and is verified through secondary sources like Duden. The different colors in our verb conjugation chart represent certain morphological transformations. These verb cojugations are derived algorithmically.