Questions & Answers about Eiken må skiftes.
Because Norwegian usually puts the definite article on the end of the noun instead of using a separate word like English the.
So -en here marks definite singular: the ...
In other words, eiken means the [noun], not just the basic noun by itself.
It is singular.
For many learners, -en can look like it might be some kind of plural ending, but here it is not. In this sentence, -en is the definite singular ending.
Må is a modal verb meaning must or has to.
It expresses necessity:
- jeg må = I must / I have to
- du må = you must / you have to
- eiken må = the ... must / has to
A useful thing to notice is that må does not change for person or number the way English sometimes does.