A1 Case System 1 min read 쉬움

The Accusative Case Suffix -ai

Grammar Rule in 30 Seconds

The -ai suffix marks the direct object of a sentence, telling us who or what is receiving the action.

  • Add -ai to a noun to show it is the object: 'Pazham' (fruit) becomes 'Pazham-ai'.
  • Use it when the object is specific or definite: 'I ate the apple' (Naan pazham-ai saapitten).
  • If the noun ends in a vowel, you might see a slight spelling change like 'ai' becoming 'ai-yai'.
Subject + Object + ai + Verb

Accusative Suffix Attachment

Noun (Base) Suffix Result Meaning
Pazham
-ai
Pazham-ai
The fruit
Pusthagam
-ai
Pusthagam-ai
The book
Poonai
-yai
Poonai-yai
The cat
Naan
-ai
Ennai
Me
Neenga
-ai
Ungalai
You
Avan
-ai
Avanai
Him

Meanings

The accusative case suffix -ai is used to mark the direct object of a transitive verb in Tamil.

1

Direct Object Marker

Marks the entity directly affected by the verb's action.

“Naan pusthagam-ai padikkiren (I am reading the book).”

“Avan pazham-ai saapittan (He ate the fruit).”

Reference Table

Reference table for The Accusative Case Suffix -ai
Form Structure Example
Affirmative
Noun + ai + Verb
Naan pazham-ai saapitten
Negative
Noun + ai + Verb-negative
Naan pazham-ai saapidala
Question
Noun + ai + Verb-question
Neenga pazham-ai saapitteengala?
Pronoun (Me)
En + ai
Ennai
Pronoun (You)
Ungal + ai
Ungalai
Pronoun (Him)
Avan + ai
Avanai

격식 수준 스펙트럼

격식체
Naan avanai kanden.

Naan avanai kanden. (Casual conversation)

중립
Naan avanai paarthen.

Naan avanai paarthen. (Casual conversation)

비격식체
Avanai paarthen.

Avanai paarthen. (Casual conversation)

속어
Avanai paathuten.

Avanai paathuten. (Casual conversation)

The Accusative Case Map

Accusative Case

Objects

  • Pazham-ai The fruit
  • Pusthagam-ai The book

Pronouns

  • Ennai Me
  • Ungalai You

수준별 예문

1

Naan pazham-ai saapitten.

I ate the fruit.

2

Avan pusthagam-ai padikkiran.

He is reading the book.

3

Neenga ennai paartheengala?

Did you see me?

4

Naan veedu-ai paarthen.

I saw the house.

1

Avan poonai-ai thookinaan.

He lifted the cat.

2

Naan unnai koopiduren.

I am calling you.

3

Aval paattu-ai paadinaal.

She sang the song.

4

Neenga car-ai vangeengala?

Did you buy the car?

1

Avan avan-ai nambavillai.

He did not trust him.

2

Naan indha velai-ai mudithen.

I finished this work.

3

Neenga yaar-ai thedureenga?

Who are you looking for?

4

Avan cinema-ai paarthaan.

He watched the movie.

1

Naan ungal-ai sandhikkavillai.

I did not meet you.

2

Avan unmai-ai sonnaan.

He told the truth.

3

Neenga idhai eppadi seiveenga?

How will you do this?

4

Aval kadhai-ai ezhudinaal.

She wrote the story.

1

Avan than-nai thaane nambinaan.

He believed in himself.

2

Naan avargal-ai azhaithan.

I invited them.

3

Neenga ennai purindhukollavillai.

You did not understand me.

4

Avan mudivu-ai eduthaan.

He made the decision.

1

Avan idhai-ai kooda seiyavillai.

He didn't even do this.

2

Naan ungal-ai nambugiren.

I trust you.

3

Avan ellor-aiyum azhaithaan.

He invited everyone.

4

Neenga ennai-ai thavira veru yaar-aiyum nambavillai.

You don't trust anyone except me.

혼동하기 쉬운

The Accusative Case Suffix -ai Dative Case (-ukku)

Learners often use -ukku (to) when they should use -ai (object).

The Accusative Case Suffix -ai Nominative Case

Learners forget to add -ai to the object, leaving it in the nominative form.

The Accusative Case Suffix -ai Genitive Case (-oda)

Learners confuse possession with object marking.

자주 하는 실수

Naan pazham saapitten

Naan pazham-ai saapitten

Missing the object marker.

Naan en saapitten

Naan ennai saapitten

Incorrect pronoun form.

Naan pusthagam-ukku padikkiren

Naan pusthagam-ai padikkiren

Confusing accusative with dative.

Naan poonai saapitten

Naan poonai-yai saapitten

Missing the glide for vowel-ending nouns.

Avan un saapittan

Avan unnai saapittan

Wrong pronoun form.

Naan idhu-ai paarthen

Naan idhai paarthen

Incorrect contraction.

Neenga yaar-ukku thedureenga?

Neenga yaar-ai thedureenga?

Wrong case for 'who'.

Avan avan-ai nambunaan

Avan than-nai nambunaan

Reflexive pronoun usage.

Naan kadhai-ukku ezhudinen

Naan kadhai-ai ezhudinen

Wrong case.

Avan ellor-ai nambinaan

Avan ellor-aiyum nambinaan

Missing the 'yum' suffix for 'everyone'.

Naan ungal-ai-ukku sonnen

Naan ungal-ai sonnen

Double case marking error.

Avan idhai-ai-yai paarthaan

Avan idhai paarthaan

Redundant suffixing.

Naan avan-ai-ai nambinen

Naan avan-ai nambinen

Redundant suffixing.

문장 패턴

Naan ___ -ai saapitten.

Neenga ___ -ai paartheengala?

Avan ___ -ai koopittaan.

Naan ___ -ai mudithen.

Real World Usage

Texting constant

Unnai miss panren!

Ordering food very common

Dosai-ai kondu vaanga.

Job interview common

Naan indha velai-ai seiyalam.

Travel common

Naan ticket-ai vangunen.

Social media very common

Indha photo-ai paaru!

Classroom common

Naan paadam-ai padikkiren.

💡

Pronoun Check

Remember that pronouns like 'Naan' (I) become 'Ennai' (Me) when you add -ai. It's not 'Naan-ai'.
⚠️

Don't Over-Suffix

Only add -ai to the direct object. Don't add it to the subject or the verb.
🎯

Vowel Glides

If the word ends in a vowel, use -yai to make it sound better. It's a natural bridge.
💬

Spoken vs Written

In very fast speech, some people might drop the -ai, but always use it in writing to be clear.

Smart Tips

Ask yourself: 'Is this the thing being acted upon?' If yes, use -ai.

Naan pusthagam padikkiren. Naan pusthagam-ai padikkiren.

Always memorize the accusative forms of pronouns (Ennai, Ungalai, Avanai) as a set.

Naan naan-ai paarthen. Naan ennai paarthen.

If the word ends in a vowel, add -yai to keep the flow smooth.

Naan poonai-ai paarthen. Naan poonai-yai paarthen.

If you are giving something, use -ukku. If you are doing something to it, use -ai.

Naan pazham-ukku saapitten. Naan pazham-ai saapitten.

발음

Poonai-yai (Poo-nai-yai)

Gliding

When a noun ends in a vowel, add -yai instead of -ai for a smoother transition.

Question intonation

Neenga ennai paartheengala? ↑

Rising pitch at the end indicates a question.

암기하기

기억법

Think of 'ai' as 'eye'. The object is what the verb has its 'eye' on.

시각적 연상

Imagine a giant eye floating above the object of your sentence, staring at it. That eye is the -ai suffix.

Rhyme

When the action hits a thing, add -ai to make it sing.

Story

I saw a cat (Poonai). I wanted to pet the cat. So I said 'Poonai-yai' to the cat. The cat purred because it knew it was the object of my affection.

Word Web

Pazham-aiPusthagam-aiEnnaiUngalaiAvanaiPoonai-yai

챌린지

Write 5 sentences about things you see around you right now using the -ai suffix.

문화 노트

In spoken Tamil, the -ai suffix is sometimes dropped in very casual speech, but keeping it is always correct.

The -ai suffix is a Dravidian case marker that has been stable in Tamil for millennia.

대화 시작하기

Neenga yaar-ai thedureenga?

Neenga enna saapitteenga?

Neenga indha pusthagam-ai padichitteengala?

Neenga yaar-ai nambureenga?

일기 주제

Write about what you ate today.
Describe a person you admire.
Write about a movie you watched recently.
Reflect on a difficult decision you made.

자주 하는 실수

Incorrect

정답


Incorrect

정답


Incorrect

정답


Incorrect

정답

Test Yourself

Fill in the correct suffix.

Naan pazham ___ saapitten.

✓ Correct! ✗ Not quite. Correct answer: -ai
Pazham is the object.
Choose the correct sentence. 객관식

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: Naan ennai paarthen
Ennai is the correct form of 'me'.
Fix the error. Error Correction

Find and fix the mistake:

Avan pusthagam saapittan.

✓ Correct! ✗ Not quite. Correct answer: Avan pusthagam-ai saapittan
Needs object marker.
Change to accusative. Sentence Transformation

Naan poonai paarthen -> ?

✓ Correct! ✗ Not quite. Correct answer: Naan poonai-yai paarthen
Vowel-ending noun needs -yai.
Match the noun to its accusative form. Match Pairs

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

✓ Correct! ✗ Not quite. Correct answer: Ennai
Naan becomes Ennai.
Order the words. Sentence Building

saapitten / pazham-ai / Naan

✓ Correct! ✗ Not quite. Correct answer: Naan pazham-ai saapitten
Subject-Object-Verb order.
Select the correct pronoun. 객관식

Neenga ___ koopitteengala?

✓ Correct! ✗ Not quite. Correct answer: ennai
Ennai is the accusative form.
Complete the sentence.

Avan ___ -ai nambinaan.

✓ Correct! ✗ Not quite. Correct answer: avanai
Avanai is the accusative form.

Score: /8

연습 문제

8 exercises
Fill in the correct suffix.

Naan pazham ___ saapitten.

✓ Correct! ✗ Not quite. Correct answer: -ai
Pazham is the object.
Choose the correct sentence. 객관식

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: Naan ennai paarthen
Ennai is the correct form of 'me'.
Fix the error. Error Correction

Find and fix the mistake:

Avan pusthagam saapittan.

✓ Correct! ✗ Not quite. Correct answer: Avan pusthagam-ai saapittan
Needs object marker.
Change to accusative. Sentence Transformation

Naan poonai paarthen -> ?

✓ Correct! ✗ Not quite. Correct answer: Naan poonai-yai paarthen
Vowel-ending noun needs -yai.
Match the noun to its accusative form. Match Pairs

Match: Naan -> ?

✓ Correct! ✗ Not quite. Correct answer: Ennai
Naan becomes Ennai.
Order the words. Sentence Building

saapitten / pazham-ai / Naan

✓ Correct! ✗ Not quite. Correct answer: Naan pazham-ai saapitten
Subject-Object-Verb order.
Select the correct pronoun. 객관식

Neenga ___ koopitteengala?

✓ Correct! ✗ Not quite. Correct answer: ennai
Ennai is the accusative form.
Complete the sentence.

Avan ___ -ai nambinaan.

✓ Correct! ✗ Not quite. Correct answer: avanai
Avanai is the accusative form.

Score: /8

자주 묻는 질문 (8)

Use it when the object is specific or animate. For generic, indefinite objects, you can sometimes omit it.

It's an irregular pronoun form. Many languages have special forms for pronouns in the accusative case.

No. -ai is for the object (target), -ukku is for the recipient (destination).

Yes, it works with plurals too. E.g., 'Pazhangalai' (The fruits).

Yes, it is used in all registers, from formal writing to casual speech.

Just add -ai. E.g., 'Pazham' -> 'Pazham-ai'.

Yes, it is mandatory for animate objects like people or pets.

Forgetting to add it when the object is a person.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

In Other Languages

German high

Accusative case (den/einen)

German changes the article; Tamil adds a suffix to the noun.

Japanese high

wo (を)

Japanese uses a separate particle; Tamil attaches it to the noun.

Spanish moderate

Direct object pronouns

Spanish uses pronouns; Tamil uses a suffix.

French moderate

Direct object pronouns

French relies on word order and pronouns; Tamil relies on case markers.

Chinese low

Word order (SVO)

Chinese has no case markers; Tamil uses suffixes.

Arabic moderate

Mansoub case (Fatha)

Arabic uses vowel changes; Tamil uses a distinct suffix.

Learning Path

Prerequisites

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