Questions & Answers about Byen er fredelig.
By means city or town in an indefinite sense, while byen means the city/the town.
- by = a city / a town
- byen = the city / the town
Norwegian usually adds the definite article to the end of the noun instead of putting a separate word in front, so -en here works like English the.
The ending -en is the definite ending for many singular common-gender nouns in Bokmål.
So:
- en by = a city / a town
- byen = the city / the town
This is one of the first big differences from English: Norwegian often expresses the as a suffix attached to the noun.
Er is the present tense of å være (to be).
So:
- jeg er = I am
- du er = you are
- byen er = the city is
In this sentence, er links the subject (byen) to the description (fredelig), just like is in English.