A2 Modal Verbs 4 min read Easy

Ability 'Dai' (Can/Able)

The word dai is your universal 'can' in Thai, needing no conjugation or changes based on the subject.
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Grammar Rule in 30 Seconds

Use 'dai' after a verb to express ability or permission, meaning 'can' or 'able to'.

  • Place 'dai' after the main verb: 'kin dai' (can eat).
  • For negatives, put 'mai' before 'dai': 'mai dai' (cannot).
  • For questions, add 'mai' at the end: 'kin dai mai?' (can you eat?).
Subject + Verb + ได้ (dai)

Overview

Ever tried to tell your Thai friend you can totally crush that spicy noodle challenge, but realized you don’t know how to say 'I can'? You’re not alone. The magic word for 'ability' or 'can' in Thai is dai. It’s your golden ticket to expressing what you are capable of doing. Whether you’re bragging about your late-night gaming skills or just trying to order a coffee without a translation app, dai is your best friend. Think of it as the 'I’ve got this' verb. It’s simple, versatile, and essential for your daily Thai interactions.

How This Grammar Works

In English, we change 'can' depending on the person, but Thai is way more chill. dai stays exactly the same whether you’re talking about yourself, your crush, or your cat. It doesn’t conjugate for tense or subject, which is a massive win for your brain cells. You basically just slap it before the action you want to perform. If you want to say 'I can eat,' you just say 'I' + dai + 'eat.' That’s it. No weird 'am/is/are' or 'can/could' gymnastics here. It’s like the ultimate life hack for language learners.

Formation Pattern

1
Start with the Subject (I, You, He, She, They, or names).
2
Add the word dai (can).
3
Add the Verb (the action you can do).
4
Add an Object (optional, if needed).
5
Example: chan (I) + dai (can) + kin (eat) + phet (spicy) = 'I can eat spicy food.'

When To Use It

Use dai whenever you’re talking about a learned skill or a general possibility. Did you finally beat that boss in Elden Ring? Use dai. Want to tell a barista you can pay with a QR code? Use dai. It’s perfect for Instagram captions like 'Look, I can speak Thai!' or telling your friends you can make it to the party on time. If you have the physical or mental capacity to do something, dai is the word you’re looking for. It’s basically the 'I’m capable' button.

Common Mistakes

One classic trap is confusing dai with pen. Remember: dai is for general possibility or permission, while pen is for skills you had to learn (like swimming or speaking a language). If you say 'I dai speak Thai,' it sounds a bit like you’re saying you’re *allowed* to speak it, rather than you *know how* to. Stick to pen for skills, and dai for 'I can do it right now' or 'it’s possible.' Also, don't put dai at the end of the sentence like a question tag unless you’re actually asking 'can you?'

Contrast With Similar Patterns

Think of dai as the 'possibility' master. If you want to talk about 'knowing how to do something' (like playing piano), use pen. If you are talking about 'permission' (like 'can I go?'), dai is still your go-to. It’s a bit like the difference between 'I can' (capacity) and 'I may' (permission). Thai speakers use the same word for both, which is honestly a relief. If you’re ever unsure, dai is almost always safe, but check if pen fits better for learned talents.

Quick FAQ

Q

Does dai change if I’m talking to my boss? A: Nope, dai is universal! Just add a polite particle like ka or krub at the end to sound respectful. Q: Can I use dai for the past tense? A: Yes, Thai doesn't have past tense conjugation; just add a time word like 'yesterday' to set the scene. Q: Is dai used in questions? A: Definitely! Just add mai at the end to turn your statement into a 'Can you?' question.

Dai Sentence Structure

Type Structure Example
Affirmative
Subject + Verb + Dai
Chan pai dai
Negative
Subject + Verb + Mai Dai
Chan pai mai dai
Question
Subject + Verb + Dai + Mai?
Chan pai dai mai?
Short Yes
Dai
Dai
Short No
Mai Dai
Mai Dai
Ability
Subject + Verb + Dai
Chan kin dai

Meanings

The word 'dai' acts as a modal verb indicating physical ability, learned skill, or permission to perform an action.

1

Physical Ability

Possessing the physical capacity to do something.

“เขาวิ่งได้เร็ว (He can run fast)”

“ฉันยกของหนักได้ (I can lift heavy things)”

2

Learned Skill

Having acquired the knowledge to perform a task.

“ผมขับรถได้ (I can drive)”

“เธอทำอาหารไทยได้ (She can cook Thai food)”

3

Permission

Being allowed to do something.

“ที่นี่จอดรถได้ (You can park here)”

“เข้าได้ไหม (Can I enter?)”

Reference Table

Reference table for Ability 'Dai' (Can/Able)
Subject Ability Verb Meaning
Chan
dai
pai
I can go
Khun
dai
kin
You can eat
Khao
dai
tham
He/She can do
Puen
dai
len
Friends can play
Chan
dai
sue
I can buy
Khun
dai
fang
You can listen

Formality Spectrum

Formal
ไปได้ไหมครับ

ไปได้ไหมครับ (Asking for permission)

Neutral
ไปได้ไหม

ไปได้ไหม (Asking for permission)

Informal
ไปได้ป่ะ

ไปได้ป่ะ (Asking for permission)

Slang
ไปได้ป่ะแก

ไปได้ป่ะแก (Asking for permission)

The World of 'Can' in Thai

Ability

Usage

  • Possibility It is possible
  • Permission You may do it

Dai vs Pen

Dai (General Can)
Can go pai dai
Pen (Learned Skill)
Can swim wai nam pen

How to form a sentence

1

Is it a learned skill?

YES
Use 'pen'
NO
Use 'dai'
2

Is it a question?

YES
Add 'mai' at the end
NO ↓

Common `dai` Phrases

⚡

Daily

  • • pai dai (can go)
  • • kin dai (can eat)
  • • ma dai (can come)
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Examples by Level

1

ฉันกินได้

I can eat.

2

ไปได้

Can go.

3

ทำได้

Can do.

4

ดูได้

Can watch.

1

คุณไปได้ไหม

Can you go?

2

ฉันไปไม่ได้

I cannot go.

3

ที่นี่จอดรถได้

You can park here.

4

ฉันพูดไทยได้นิดหน่อย

I can speak a little Thai.

1

ถ้าว่าง ฉันไปได้

If I am free, I can go.

2

เขาบอกว่าทำได้

He said he can do it.

3

คุณช่วยฉันได้ไหม

Can you help me?

4

ฉันไม่คิดว่าทำได้

I don't think I can do it.

1

รบกวนช่วยเปิดประตูให้ได้ไหม

Could you please open the door for me?

2

เราสามารถตกลงกันได้

We can reach an agreement.

3

ไม่ว่าอย่างไร ฉันก็ไปไม่ได้

No matter what, I cannot go.

4

คุณพอจะบอกทางได้ไหม

Could you tell me the way?

1

หากคุณต้องการ ฉันก็จัดหาให้ได้

If you wish, I can provide it.

2

ไม่มีใครทำได้ดีเท่าเขา

No one can do it as well as him.

3

ฉันเกรงว่าจะทำไม่ได้

I am afraid I cannot do it.

4

คุณจะทำอย่างไรก็ได้ตามใจ

You can do whatever you like.

1

การที่เขาทำเช่นนั้นได้ ถือเป็นเรื่องน่าประหลาดใจ

The fact that he could do such a thing is surprising.

2

หากปราศจากความช่วยเหลือนี้ ฉันคงทำไม่ได้

Without this help, I could not have done it.

3

เขาทำได้ทุกอย่างที่ต้องการ

He can do everything he wants.

4

คุณจะให้ฉันทำอย่างไรได้

What can you expect me to do?

Easily Confused

Ability 'Dai' (Can/Able) vs Dai vs Pen

Both mean 'can'.

Ability 'Dai' (Can/Able) vs Dai vs Aht-ja

Both relate to possibility.

Ability 'Dai' (Can/Able) vs Dai vs Tong

Both are modals.

Common Mistakes

✗

Dai kin

✓

Kin dai

Wrong word order.
✗

Kin dai?

✓

Kin dai mai?

Missing question particle.
✗

Chan dai kin

✓

Chan kin dai

Subject placement error.
✗

Mai kin dai

✓

Kin mai dai

Negative placement error.
✗

Phuut thai dai

✓

Phuut thai pen

Confusing skill with possibility.
✗

Dai mai?

✓

Pai dai mai?

Missing verb.
✗

Chan dai pai

✓

Chan pai dai

Word order.
✗

Dai pai mai

✓

Pai dai mai

Word order.
✗

Kin dai pen

✓

Kin dai

Redundant modal.
✗

Mai dai kin

✓

Kin mai dai

Negative placement.
✗

Dai pai

✓

Pai dai

Word order.
✗

Pai pen

✓

Pai dai

Wrong modal.
✗

Mai pai dai

✓

Pai mai dai

Negative placement.

Sentence Patterns

Subject + ___ + dai

Subject + ___ + dai + mai?

Subject + ___ + mai + dai

Subject + ___ + dai + nit-noi

Real World Usage

Ordering food constant

Sang ahaan dai mai?

Texting very common

Pai dai!

Job interview common

Chan tham dai.

Travel very common

Pai thii nii dai yangrai?

Food delivery app common

Song dai mai?

Social media common

Tham dai!

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💡

Context is King

If you are unsure between 'dai' and 'pen', native speakers will still understand you. Don't stress too much!
⚠️

Don't over-use

Don't use 'dai' for every single 'can' if it's a learned skill like driving or playing an instrument.
💬

Politeness Matters

Always add 'krub' (for men) or 'ka' (for women) at the end of your sentence to sound polite.

Smart Tips

Use 'mai dai' after the verb.

Mai kin. → Kin mai dai.

Use 'dai mai' at the end.

Pai? → Pai dai mai?

Use 'pen' instead of 'dai'.

Phuut thai dai. → Phuut thai pen.

Keep it simple with 'dai'.

Aht-ja pai. → Pai dai.

Pronunciation

dai (mid)

Tone

Dai is a mid-tone word, keep it flat.

Question

Pai dai mai? ↑

Rising intonation at the end for questions.

Memorize It

Mnemonic

Dai is like a 'Die' (pronounced similarly) — if you can't do it, you might as well die!

Visual Association

Imagine a person trying to lift a heavy box. They succeed and shout 'Dai!' while holding it up.

Rhyme

For ability, use Dai, put it after the verb, don't be shy!

Story

Somchai wanted to swim. He practiced hard. Now he can swim. He says 'Wai nam dai!' to his friends. They are happy.

Word Web

KinPaiThamPhuutChaiWaiDai

Challenge

Spend 5 minutes today saying 5 things you can do using 'Verb + Dai'.

Cultural Notes

In Bangkok, 'dai' is used very frequently in daily life.

Northern speakers might use 'dai' differently or use local particles.

Southern speakers have a distinct accent but use 'dai' similarly.

Dai is a Proto-Tai word meaning 'to get' or 'to obtain'.

Conversation Starters

“

วันนี้คุณไปที่ไหนได้บ้าง?

“

คุณกินอาหารเผ็ดได้ไหม?

“

คุณทำอาหารไทยได้ไหม?

“

ที่นี่ใช้บัตรเครดิตได้ไหม?

Journal Prompts

Write 5 things you can do today.
Write about a place you can visit.
Write about what you can't do.
Write about a skill you can learn.

Common Mistakes

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

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Test Yourself

Fill in the blank

Chan ___ pai suea.

✓ Correct! ✗ Not quite. Correct answer: dai
Use 'dai' to express the ability or possibility to go.
Which sentence is correct? Multiple Choice

Choose the grammatically correct sentence:

✓ Correct! ✗ Not quite. Correct answer: Chan dai kin.
The structure is Subject + dai + Verb.
Find and fix the mistake Error Correction

Find and fix the mistake:

Chan dai speak Thai.

✓ Correct! ✗ Not quite. Correct answer: Chan dai phut Thai.
You must use the Thai verb for 'speak' (phut).

Score: /3

Practice Exercises

8 exercises
Fill in the blank.

Chan pai ___.

✓ Correct! ✗ Not quite. Correct answer: a
Dai is the correct modal.
Choose the correct sentence. Multiple Choice

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: a
Dai follows the verb.
Fix the sentence. Error Correction

Find and fix the mistake:

Dai kin?

✓ Correct! ✗ Not quite. Correct answer: b
Needs verb and question particle.
Reorder the words. Sentence Reorder

dai / pai / chan

✓ Correct! ✗ Not quite. Correct answer: a
Subject + Verb + Dai.
Translate to Thai. Translation

I can go.

✓ Correct! ✗ Not quite. Correct answer: a
Dai means can.
Match the meaning. Match Pairs

Kin dai

✓ Correct! ✗ Not quite. Correct answer: a
Kin means eat.
Which is for skill? Multiple Choice

I can speak Thai.

✓ Correct! ✗ Not quite. Correct answer: b
Pen is for skills.
Fill in the blank.

Chan pai mai ___.

✓ Correct! ✗ Not quite. Correct answer: a
Mai dai means cannot.

Score: /8

Practice Bank

10 exercises
Fill in the blank Fill in the Blank

Khun ___ len game?

✓ Correct! ✗ Not quite. Correct answer: dai
Fix the sentence Error Correction

Khao dai ma mai?

✓ Correct! ✗ Not quite. Correct answer: Khao ma dai mai?
Translate to Thai Translation

I can eat.

✓ Correct! ✗ Not quite. Correct answer: Chan dai kin.
Select the correct negative form Multiple Choice

How to say 'I cannot go'?

✓ Correct! ✗ Not quite. Correct answer: Chan mai dai pai.
Reorder the words Sentence Reorder

dai / pai / chan / ? / mai

✓ Correct! ✗ Not quite. Correct answer: Chan dai pai mai?
Match the English to Thai Match Pairs

Match: I can come | I can go

✓ Correct! ✗ Not quite. Correct answer: Chan dai ma | Chan dai pai
Fill in the blank Fill in the Blank

Puen ___ pai.

✓ Correct! ✗ Not quite. Correct answer: dai
Fix the grammar Error Correction

Chan dai phut phet.

✓ Correct! ✗ Not quite. Correct answer: Chan dai kin phet.
Translate to Thai Translation

Can you come?

✓ Correct! ✗ Not quite. Correct answer: Khun ma dai mai?
Correct usage Multiple Choice

Which is better for 'I can swim'?

✓ Correct! ✗ Not quite. Correct answer: Chan pen wai nam.

Score: /10

FAQ (8)

Always after the verb.

No, 'pen' is for skills.

Use 'mai dai'.

Add 'mai' at the end.

No, it is invariant.

Yes, it is very common.

The sentence will be incomplete.

It is neutral.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

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In Other Languages

Spanish high

Poder

Thai does not conjugate.

French high

Pouvoir

Thai is invariant.

German high

Können

Thai word order is fixed after the verb.

Japanese moderate

Dekiru

Japanese uses particles like 'ga'.

Arabic moderate

Istata'a

Thai is isolating.

Chinese high

Néng

Thai puts it after.

Learning Path

Prerequisites

Next
Thai Obligation: How to use 'tong' (ต้อง)

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