Questions & Answers about Filmen er britisk.
Because filmen is the definite singular form: the film.
In Norwegian, the definite article is usually added to the end of the noun:
- en film = a film
- filmen = the film
So film by itself is just the basic dictionary form, while filmen means you are talking about a specific film.
Er means is / am / are. It is the present tense of å være = to be.
Unlike English, Norwegian does not change this verb for different persons in the present tense:
- jeg er = I am
- du er = you are
- han er = he is
- filmen er = the film is
So er is the same form no matter who or what the subject is.