4Grammar and explanations
"Of" is an ending, and it comes first
Mongolian puts the owner first, with an ending, and the thing second, with no ending at all. English can say "Nomin's book" or "the book of Nomin"; Mongolian has only one pattern. This case is called the genitive.
Номины номNomin-GEN book"Nomin's book"
хотын төвcity-GEN centre"the city centre"
багшийн номteacher-GEN book"the teacher's book"
The endings
The genitive has several shapes, but they follow the end of the word.
| Ending | When | Examples |
|---|
| –ын | after a consonant, in words with а, о, у | хотын, номын, Батын, Болдын |
| –ийн | after a consonant, in words with э, ө, ү (or only и), and after ж, ч, ш, ь | гэрийн, Цэцэгийн, багшийн, сургуулийн |
| –ы / –ий | after н | Номины, хүний (of a person) |
| –гийн | after a long vowel | Сараагийн, Дулмаагийн, Оюунаагийн |
| –н | after –ай and –ой | оройн (of the evening) |
Notice two things. The genitive has no form with о or ө: хот gives хотын. And words in ж, ч, ш take –ийн even with а: багш gives багшийн.
Chains of genitives
Genitives can stack. Read them from the end backwards: the last noun is the main one.
миний багшийн номmy teacher-GEN book"my teacher's book"
Монгол Улсын Их СургуульMongolia State-GEN big school"the National University of Mongolia"
Whose?
Хэн (who) gives хэний (whose). It stands where the answer would stand, in front of the noun.
Энэ хэний ном бэ?this who-GEN book Q"Whose book is this?"
The answer: Энэ миний багшийн ном. Remember that миний, чиний, таны (lesson 19) are the genitives of the pronouns: they too come before the noun.
Words to learn whole
Many everyday words are genitive phrases: номын сан (library), хотын төв (city centre), ангийн найз (classmate). Learn them as units, the way English learns "bookshop".
Go deeper in the grammar guide: The genitive case · Mongolian names
5Good to know
Mongolians have no family name in the English sense. In front of their own name, they write their father's name in the genitive. So Nomin's full name is Батын Номин, "Bat's Nomin", and her brother is Батын Тэмүүлэн.
You call people by their own name only: Номин, never Батын. On official lists, people are sorted by their own name, not by the father's.