sem

In a sentence

• Jaz sem učitelj.

  I am a teacher.

  In this sentence, 'sem' is the first person singular form of the verb 'to be', indicating a state of being.

• Sem prišel pravočasno.

  I arrived on time.

  In this sentence, 'sem' is part of the past tense construction in Slovenian, introducing the first person singular form of the perfect tense.

• Knjižnica sem obiskal včeraj.

  The library is where I paid a visit yesterday.

  Here, 'sem' can function as an auxiliary/modal complement to indicate the physical action's direction in relation to the speaker or add emphasis to the subject's role.