Questions & Answers about De artsen zijn in hun kantoor.
Why do we use hun here?
Hun is the possessive word for "their". We use it because the office belongs to de artsen (the doctors). Unlike the words for "our" (ons and onze), the word hun never changes its spelling, no matter what kind of noun comes after it.
The doctors are sharing one office. Does hun change if we talk about multiple offices?
No, it stays exactly the same. Whether it is one office (hun kantoor) or multiple offices (hun kantoren), the word hun does not change.
How do we form the plural artsen?
The singular word for doctor is arts. To make it plural, we just add the standard -en ending to get artsen.
Why do we use zijn in this sentence?
Zijn is the plural form of the verb meaning "to be". Since the subject de artsen is a plural "they", we use zijn to say "are".