A1 Case System 1 min read かんたん

Genitive Suffixes for Nouns ending in Consonants

Grammar Rule in 30 Seconds

To show possession or relationship for nouns ending in a consonant, add the suffix -iin or -iin depending on vowel harmony.

  • If the noun ends in a consonant, attach -iin or -iin.
  • Vowel harmony dictates whether you use the front or back vowel version.
  • The possessor always comes before the thing possessed.
Possessor + [Suffix] + Possessed Object

Genitive Suffix Selection

Noun Ending Vowel Type Suffix
Consonant
Back (a, o, u)
-ын
Consonant
Front (e, ö, ü)
-ийн
Vowel
Any

Meanings

The genitive case indicates possession, origin, or relationship between two nouns.

1

Possession

Indicates who owns an object.

“Оюутны дэвтэр (Student's notebook)”

“Аавын машин (Father's car)”

2

Relationship

Indicates a social or familial connection.

“Найзын ах (Friend's older brother)”

“Ээжийн найз (Mother's friend)”

3

Origin/Material

Indicates what something is made of or where it comes from.

“Модон ширээ (Wooden table)”

“Төмөр хаалга (Iron door)”

Reference Table

Reference table for Genitive Suffixes for Nouns ending in Consonants
Form Structure Example
Affirmative
Noun + Suffix
Багшийн
Possessive
Possessor + Possessed
Багшийн ном
Question
Possessor + Possessed + Question Particle
Багшийн ном уу?
Negative
Not + Possessor + Possessed
Багшийн ном биш
Plural
Noun + Plural + Suffix
Багш нарын ном
Formal
Noun + Suffix
Компанийн

フォーマル度スペクトル

フォーマル
Багшийн ном байна.

Багшийн ном байна. (Classroom)

ニュートラル
Багшийн ном.

Багшийн ном. (Classroom)

カジュアル
Багшийн ном оо.

Багшийн ном оо. (Classroom)

スラング
Багшийн ном шүү.

Багшийн ном шүү. (Classroom)

Genitive Case Connections

Possessor

Possession

  • Аавын Father's

Relationship

  • Найзын Friend's

レベル別の例文

1

Багшийн ном

The teacher's book

2

Оюутны дэвтэр

The student's notebook

3

Аавын машин

Father's car

4

Найзын гэр

Friend's house

1

Ээжийн найз ирлээ.

Mother's friend arrived.

2

Энэ бол миний ахын утас.

This is my brother's phone.

3

Хот-ын хүмүүс их байна.

There are many city people.

4

Багшийн өрөө хаана вэ?

Where is the teacher's room?

1

Компанийн бодлого өөрчлөгдсөн.

The company's policy has changed.

2

Энэ бол модон ширээ.

This is a wooden table.

3

Танай найзын санал юу вэ?

What is your friend's suggestion?

4

Төмөр хаалганы түлхүүр.

The key to the iron door.

1

Засгийн газрын шийдвэр гарлаа.

The government's decision was issued.

2

Энэ бол манай сургуулийн бахархал.

This is our school's pride.

3

Оюутны байрны дүрэм чанга.

The dormitory's rules are strict.

4

Хүний эрхийн төлөө тэмцэх.

To fight for human rights.

1

Түүхийн номын хуудас бүр чухал.

Every page of the history book is important.

2

Байгалийн үзэсгэлэнгийн тухай ярих.

To talk about the beauty of nature.

3

Шинжлэх ухааны нээлтийн ач холбогдол.

The significance of the scientific discovery.

4

Эх орны хөгжлийн төлөө.

For the sake of the motherland's development.

1

Монгол хэлний зүй тогтлын судалгаа.

Research on the regularities of the Mongolian language.

2

Өвөг дээдсийн уламжлалт зан заншил.

The traditional customs of the ancestors.

3

Нийгмийн давхаргын ялгаатай байдал.

The differentiation of social strata.

4

Оюун санааны эрх чөлөөний тунхаг.

The declaration of spiritual freedom.

間違えやすい

Genitive Suffixes for Nouns ending in Consonants Accusative Case

Both involve suffixes on nouns.

Genitive Suffixes for Nouns ending in Consonants Dative Case

Both are case suffixes.

Genitive Suffixes for Nouns ending in Consonants Plural Suffixes

Both attach to the end of nouns.

よくある間違い

Багш ном

Багшийн ном

Missing the genitive suffix.

Аавын ном

Аавын ном

Correct.

Найз-ын ном

Найзын ном

Incorrect vowel harmony.

Ээж-ын ном

Ээжийн ном

Wrong suffix for front vowels.

Хот-ын хүн

Хотын хүн

Unnecessary hyphenation.

Багш-ын

Багшийн

Wrong vowel harmony.

Миний ахын

Миний ахын

Correct.

Компани-ын

Компанийн

Double vowel error.

Төмөр-ын

Төмөр

Over-applying suffixes.

Оюутан-ын

Оюутны

Incorrect stem modification.

Засгийн газрын-ын

Засгийн газрын

Redundant suffixing.

Эх орон-ын

Эх орны

Stem change error.

Хүний эрх-ын

Хүний эрхийн

Incorrect chain genitive.

文型パターン

___-ын ном.

Энэ бол ___-ийн машин.

___-ын бодлого чухал.

___-ын хөгжил хурдан.

Real World Usage

Texting constant

Найзын утас хаана вэ?

Social Media very common

Багшийн зураг.

Job Interview common

Компанийн зорилго.

Travel common

Хотын төв.

Food Delivery occasional

Рестораны цэс.

University very common

Оюутны байр.

💡

Vowel Harmony

Always check the last vowel of the word before adding the suffix.
⚠️

Don't skip it

Skipping the suffix makes your Mongolian sound like broken English.
🎯

Practice with names

Try adding the suffix to your friends' names.
💬

Respectful usage

Use it correctly when talking about elders or teachers.

Smart Tips

Check the last vowel immediately.

Багш ном Багшийн ном

Ensure the genitive is used for all relationships.

Компани бодлого Компанийн бодлого

Don't overthink it, just use the suffix naturally.

Найз машин Найзын машин

Use the genitive for materials.

Мод ширээ Модон ширээ

発音

bagsh-iin

Vowel Harmony

Ensure the suffix vowel matches the stem vowel.

Statement

Багшийн ном.

Falling intonation at the end.

暗記しよう

記憶術

Think of the suffix as a 'hook' that grabs the next noun.

視覚的連想

Imagine a giant hook (the suffix) connecting two boxes (the nouns).

Rhyme

Consonant end, add -iin to be a friend.

Story

My teacher (bagsh) had a book. I added the -iin hook to his name. Now it is the teacher's book.

Word Web

БагшОюутанАавЭэжНайзХот

チャレンジ

Write 5 sentences using the genitive case to describe things in your room.

文化メモ

Respect for teachers is high, so 'Багшийн' is used frequently.

The genitive suffix originates from Proto-Mongolic case markers.

会話のきっかけ

Энэ хэний ном бэ?

Танай найзын нэр хэн бэ?

Компанийн бодлого ямар вэ?

Эх орны хөгжлийн талаар юу гэж боддог вэ?

日記のテーマ

Describe your family members using the genitive case.
Write about your favorite book and its author.
Discuss the importance of school rules.
Reflect on the history of your country.

よくある間違い

Incorrect

正解


Incorrect

正解


Incorrect

正解


Incorrect

正解

Test Yourself

Add the correct genitive suffix.

Багш ___ ном.

✓ Correct! ✗ Not quite. Correct answer: -ийн
Багш has front vowels.
Which is correct? 選択問題

Аав ___ машин.

✓ Correct! ✗ Not quite. Correct answer: -ын
Аав has back vowels.
Fix the error. Error Correction

Find and fix the mistake:

Найз-ын ном.

✓ Correct! ✗ Not quite. Correct answer: Найзын
No hyphen needed.
Reorder the sentence. Sentence Reorder

Arrange the words in the correct order:

All words placed

Click words above to build the sentence

✓ Correct! ✗ Not quite. Correct answer: Энэ бол багшийн ном
Standard word order.
Translate to Mongolian. 翻訳

Father's car.

Answer starts with: Аав...

✓ Correct! ✗ Not quite. Correct answer: Аавын машин
Correct possessive structure.
Match the noun to the suffix. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: -ийн, -ийн, -ын, -ын
Vowel harmony rules.
Conjugate the noun. Conjugation Drill

Хот

✓ Correct! ✗ Not quite. Correct answer: Хотын
Back vowel harmony.
Build a sentence. Sentence Building

Use 'Компани' and 'бодлого'.

✓ Correct! ✗ Not quite. Correct answer: Компанийн бодлого
Correct genitive use.

Score: /8

練習問題

8 exercises
Add the correct genitive suffix.

Багш ___ ном.

✓ Correct! ✗ Not quite. Correct answer: -ийн
Багш has front vowels.
Which is correct? 選択問題

Аав ___ машин.

✓ Correct! ✗ Not quite. Correct answer: -ын
Аав has back vowels.
Fix the error. Error Correction

Find and fix the mistake:

Найз-ын ном.

✓ Correct! ✗ Not quite. Correct answer: Найзын
No hyphen needed.
Reorder the sentence. Sentence Reorder

ном / багшийн / энэ / бол

✓ Correct! ✗ Not quite. Correct answer: Энэ бол багшийн ном
Standard word order.
Translate to Mongolian. 翻訳

Father's car.

✓ Correct! ✗ Not quite. Correct answer: Аавын машин
Correct possessive structure.
Match the noun to the suffix. Match Pairs

Багш, Ээж, Аав, Найз

✓ Correct! ✗ Not quite. Correct answer: -ийн, -ийн, -ын, -ын
Vowel harmony rules.
Conjugate the noun. Conjugation Drill

Хот

✓ Correct! ✗ Not quite. Correct answer: Хотын
Back vowel harmony.
Build a sentence. Sentence Building

Use 'Компани' and 'бодлого'.

✓ Correct! ✗ Not quite. Correct answer: Компанийн бодлого
Correct genitive use.

Score: /8

よくある質問 (8)

It is the only way to show possession in Mongolian.

You use -n instead of -iin.

Yes, it is very common in all forms of communication.

You likely ignored vowel harmony.

English uses 's; Mongolian uses a suffix.

Yes, it is essential for formal writing.

It is for possession and relationship.

Very few; it is a very consistent rule.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

In Other Languages

Spanish low

de + noun

Mongolian uses suffixes; Spanish uses prepositions.

French low

de + noun

Mongolian uses suffixes; French uses prepositions.

German partial

Genitive case

German uses articles; Mongolian uses suffixes.

Japanese moderate

no

Japanese uses a separate particle; Mongolian uses a suffix.

Arabic low

Idafa

Mongolian order is possessor-possessed; Arabic is possessed-possessor.

Chinese low

de

Chinese uses a particle; Mongolian uses a suffix.

Learning Path

Prerequisites

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