This is the 4th most frequent Norwegian word.
er
"Er" means "am," "are," or "is" in English, depending on context.
In this sentence, 'er' is the present tense of 'å være' (to be), and it serves as the linking verb connecting the subject 'Jeg' (I) with the predicate 'lærer' (teacher).
Jeg er lærer.
I am a teacher.
'Er' functions as the present tense form of 'to be', indicating the location or state of an object in a question.
Hvor er boken min?
Where is my book?
Here, 'er' serves as the verb 'to be' in the present tense, establishing a general statement or ideal and connecting the subject phrase 'Det' (It) with the complement.