Vietnamese Particle sao Usage (Question / How / Really)
When placed at the end of a sentence, sao often expresses surprise, rhetorical questions, or requests for explanation.
Quick explanation
Quick explanation
When placed at the end of a sentence, sao often expresses surprise, rhetorical questions, or requests for explanation.
English meanings
- question particle
- how
- really?
Grammar pattern
Examples
1
Bạn không đi sao?
Aren't you going?
2
Món này đắt vậy sao?
Is this dish really that expensive?
How to use it
Sao is not just 'why'. At the sentence end, it adds a tone like 'Is that so?' or 'How come?'.
- Commonly used to express surprise, rhetorical questions, or to ask for reasons.
- Tone can be strong; use carefully in formal contexts.
Compared with English
Compared with English
English uses 'how', 'why', or rhetorical questions to express surprise or disbelief; Vietnamese sentence-final sao highlights this questioning tone explicitly.
Common mistakes
Sao bạn không đi sao?
Bạn không đi sao?
Using sao both at the start and end is redundant; usually only sentence-final sao is needed.
Bạn không đi không?
Bạn không đi sao?
To express surprise or rhetorical question, sao is more natural than a plain negative question.
Commonly confused grammar
Practice
Multiple choice
Which sentence correctly uses sao?
Show answer
Multiple choice
Which sentence correctly uses sao?
- Bạn không đi sao?
- Sao bạn không đi sao?
- Bạn không đi không?
Answer: Bạn không đi sao?
Explanation: sao is commonly used to express surprise, rhetorical questions, or ask for reasons.
Fill in the blank
Fill in the blank: Bạn không đi ____?
Show answer
Fill in the blank
Fill in the blank: Bạn không đi ____?
Answer: Bạn không đi sao?
Explanation: sao is used at the end to express surprise or rhetorical questioning.
English to Vietnamese
Translate "Aren't you going?" into Vietnamese.
Show answer
English to Vietnamese
Translate "Aren't you going?" into Vietnamese.
Answer: Bạn không đi sao?
Explanation: Use sao in the same structure as the example.
True or false
True or False: Sao bạn không đi sao?
Show answer
True or false
True or False: Sao bạn không đi sao?
Answer: False
Explanation: Using sao twice in one sentence is redundant; only sentence-final sao is needed.
Correction
Correct the unnatural placement of sao in this sentence.
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Correction
Correct the unnatural placement of sao in this sentence.
Answer: Bạn không đi sao?
Explanation: sao as a sentence-final particle is usually placed at the end of the sentence or intonation unit.