Emphasis 'Si'
Grammar Rule in 30 Seconds
The particle 'Si' (สิ) adds a sense of urgency, command, or strong suggestion to your sentence.
- Use 'Si' to turn a statement into a firm suggestion: 'ไปสิ' (Go on then!).
- Use 'Si' to emphasize a known fact: 'ก็บอกแล้วไงว่าไม่รู้สิ' (I told you I don't know!).
- Use 'Si' in questions to sound more natural and conversational: 'ไหนล่ะสิ' (Where is it then?).
Meanings
The particle 'Si' is used to add emphasis, urgency, or to turn a statement into a strong suggestion or command.
Strong Suggestion
Encouraging someone to do something.
“ทำเลยสิ”
“ไปดูสิ”
Emphasis of Fact
Asserting a point strongly.
“ก็มันจริงสิ”
“ก็บอกแล้วสิ”
Formation of 'Si' Sentences
| Type | Structure | Example |
|---|---|---|
| Affirmative | Verb + สิ | ไปสิ |
| Negative | ไม่ + Verb + สิ | ไม่ไปสิ |
| Question | Question Word + Verb + สิ | ไหนล่ะสิ |
| Emphasis | ก็ + Fact + สิ | ก็จริงสิ |
Reference Table
| Form | Structure | Example |
|---|---|---|
| Command | Verb + สิ | ทำสิ |
| Suggestion | ลอง + Verb + สิ | ลองทำสิ |
| Fact | ก็ + Fact + สิ | ก็ใช่สิ |
| Question | ไหน + Verb + สิ | ไหนดูสิ |
| Negative | ไม่ + Verb + สิ | ไม่ทำสิ |
격식 수준 스펙트럼
กรุณาทานอาหารครับ (Eating)
ไปกินข้าวกัน (Eating)
ไปกินข้าวสิ (Eating)
แดกดิ (Eating)
The 'Si' Particle Universe
Function
- Suggestion Encouragement
- Emphasis Certainty
Tone
- Firm Direct
- Urgent Immediate
Examples by Level
ไปสิ
Go on then!
กินสิ
Eat it!
ดูสิ
Look!
มาสิ
Come here!
ก็บอกแล้วสิ
I already told you!
ทำเลยสิ
Just do it!
ไหนล่ะสิ
Where is it then?
ก็ต้องไปสิ
Of course I have to go!
ถ้าอยากได้ก็ซื้อสิ
If you want it, just buy it.
ก็มันเป็นแบบนี้สิ
Well, that's just how it is.
ไม่ชอบก็บอกสิ
If you don't like it, just say so.
ทำไมไม่ทำสิ
Why don't you just do it?
ก็เขาบอกว่าไม่ว่างสิ
Well, he said he wasn't free!
จะรออะไรอีกล่ะสิ
What are you waiting for then?
ถึงเวลาแล้วสิ
It's time, isn't it?
ก็ต้องเป็นแบบนั้นสิ
It has to be that way, obviously.
ก็เพราะแบบนี้สิถึงต้องระวัง
It's precisely because of this that we must be careful.
ถ้าไม่ทำตอนนี้แล้วจะทำตอนไหนสิ
If we don't do it now, when will we?
ก็เห็นอยู่ชัดๆ ว่ามันไม่ใช่สิ
It's clearly obvious that it's not.
เรื่องแค่นี้เองสิ
It's just a small matter, really.
ก็ใครจะไปรู้สิ
Who could have known, really?
มันก็ต้องมีเหตุผลสิ
There must be a reason, surely.
ก็บอกแล้วไงสิว่าไม่เกี่ยว
I told you already, it's not related!
ถึงได้บอกให้ทำสิ
That's exactly why I told you to do it.
Easily Confused
Both are particles at the end of sentences.
자주 하는 실수
ไปสิครับ
ไปนะครับ
กินสิ
กินไหม
สิไป
ไปสิ
ไปสิสิ
ไปสิ
ทำสิครับ
ทำนะครับ
ไม่ทำสิ
ไม่ทำนะ
ไหนสิ
ไหนล่ะสิ
ไปสิ (to boss)
ไปนะครับ
ก็บอกสิ
ก็บอกแล้วไง
ทำสิ (to stranger)
ทำหน่อยครับ
สิ (in formal report)
particle-free
สิ (in academic paper)
particle-free
สิ (in formal speech)
particle-free
Sentence Patterns
___สิ
Real World Usage
มาสิ
Use with friends
Smart Tips
Use 'Si' to be firm.
발음
Tone
The particle 'สิ' has a low tone.
Falling
ไปสิ↘
Firm command.
Memorize It
Mnemonic
Think of 'Si' as 'See!'—like you are pointing at something and saying 'See, I told you!'
Visual Association
Imagine a friend nudging you with their elbow, saying 'Si!' to get you to move.
Rhyme
When you want to be firm and true, add 'Si' to the end of what you do.
Story
You are at a cafe. Your friend is scared to order. You say 'Order it!' (สั่งเลยสิ). They hesitate. You say 'It's good!' (มันอร่อยสิ). Finally, they order.
Word Web
챌린지
For the next 5 minutes, try to add 'สิ' to every suggestion you make to a friend.
문화 노트
Thai culture values politeness. Using 'Si' can be seen as pushy if not used with friends.
Derived from ancient Thai emphatic markers.
Conversation Starters
What should I do today?
Journal Prompts
Test Yourself
ไป___
Score: /1
연습 문제
1 exercisesไป___
Score: /1
자주 묻는 질문 (1)
No, it's too informal.
In Other Languages
doch
Doch is used for contradiction.
