Questions & Answers about Jeg skriver i min egen dagbok hver kveld.
Skriver is the present tense of the verb å skrive (to write).
Norwegian has only one present tense form, and it covers both:
- English I write
- and I am writing
So Jeg skriver i min egen dagbok hver kveld can be translated as:
- I write in my own diary every evening, or
- I am writing in my own diary every evening (as a habit)
Context decides which English form sounds more natural; in this sentence, it describes a regular habit.
In Norwegian, i literally means in, and it’s the natural preposition for writing in something that is seen as a container or a book:
- skrive i en bok – to write in a book
- skrive i dagboka – to write in the diary
På (on) is used in other expressions:
- skrive på tavla – write on the board
- skrive på et brev – to be working on a letter (literally writing on a letter)
So Jeg skriver i min egen dagbok is the normal, idiomatic choice. Jeg skriver på min egen dagbok would sound wrong in standard Norwegian for this meaning.