Vietnamese often presents a person as the affected participant and names the relevant body part later: Tôi đau đầu “I have a headache,” Tôi bị đứt tay “I cut my hand,” and Bác sĩ khám mắt cho tôi “The doctor examined my eyes.” English frequently makes the body part the grammatical subject or marks it with a possessive. Vietnamese can leave the possessor unexpressed inside the body-part phrase because the clause already makes that relationship clear.
This page explains those body-part patterns. It does not cover the wider alignment of emotions, preferences, and mental states; those belong on experiencer predicates.
The body part can be integrated into the predicate
Compare the main Vietnamese predicate types:
| Clause | Analysis |
|---|---|
| Tôi ăn cơm. | event predicate with an ordinary object |
| Cô ấy là giáo viên. | noun classification introduced by là |
| Trời lạnh. | property predicate without a copula |
| Tôi có một câu hỏi. | possessor + có + possessed entity |
| Ở đây có Wi-Fi. | location + có + existing entity |
| Tôi đau đầu. | affected person + bodily-state predicate |
In Tôi đau đầu, đầu identifies the site of pain. Translating its pieces as “I ache head” may help you see the form, but it is not the natural English translation. The combination đau đầu is a predicate meaning “have a headache.” It does not require có, là, or a possessive pronoun.
Tôi đau đầu từ sáng nên muốn về sớm.
I've had a headache since this morning, so I want to go home early.
Ngồi lâu quá, tôi đau lưng và mỏi cổ.
After sitting too long, my back hurts and my neck is stiff.
Affected-person subjects with bị
For an injury or unwanted bodily event, Vietnamese often uses affected person + bị + result + body part. Bị presents the event as adverse to the subject; it is not an obligatory passive auxiliary and it does not conjugate.
Tôi bị đứt tay lúc thái rau.
I cut my hand while slicing vegetables.
Anh ấy bị gãy chân nên chưa đi làm lại được.
He broke his leg, so he hasn't been able to return to work yet.
Con bé bị sưng mắt sau khi bị côn trùng cắn.
The little girl had a swollen eye after being bitten by an insect.
The affected person is prominent, while tay, chân, and mắt specify the affected area. In English, “his leg” may be the object of break or “his eye” the subject of swelled. Vietnamese chooses a participant-centered construal.
When the causer matters, it can follow bị as an agent before the event predicate:
Tôi bị chó cắn vào chân khi đi qua cổng.
A dog bit me on the leg when I walked past the gate.
Here tôi is affected, chó is the causer, and vào chân locates the bite. The preposition vào highlights contact with the body part. A shorter Tôi bị chó cắn chân is possible in suitable contexts, but cắn vào chân keeps the roles especially clear.
Ordinary actions on one's own body
With routine actions, the body part behaves like the object of the verb and no possessive is needed when the actor is also its possessor: rửa tay “wash one’s hands,” nhắm mắt “close one’s eyes,” ngẩng đầu “raise one’s head.”
Em rửa tay rồi vào ăn cơm nhé.
Wash your hands, then come in and eat.
Cô ấy nhắm mắt một lúc vì quá mệt.
She closed her eyes for a while because she was exhausted.
Nghe thấy tên mình, anh ấy ngẩng đầu lên.
Hearing his name, he looked up.
These are conventional predicate-object combinations. Rửa selects something cleaned; nhắm and ngẩng select the relevant body part. Their forms do not change for tense. Rồi, một lúc, and the discourse sequence locate the events.
When the possessor is someone else
If an agent acts on another person’s body, Vietnamese has several options. A body-part noun may include the possessor directly (tay tôi “my hand”), the affected person may appear in a cho phrase, or the construction may present that person as the object and mark the body part with a locative phrase.
Nó nắm chặt tay tôi khi sang đường.
She held my hand tightly while we crossed the street.
Bác sĩ khám mắt cho tôi và bảo mọi thứ đều bình thường.
The doctor examined my eyes and said everything was normal.
Mẹ xoa dầu vào lưng cho bé.
The mother rubbed medicated oil onto the baby's back.
Cho tôi marks the beneficiary or affected person in the examination; it does not literally translate English possession. Tay tôi is compact noun–possessor order. Tay của tôi is grammatical too, but của is often omitted before a short, obvious pronominal possessor; retaining it can improve clarity or add contrast: Đây là kính của tôi, không phải của anh “These are my glasses, not yours.”
Body-part topic versus affected-person topic
The body part can come first when it is the natural discourse topic—for example, when someone reports a prominent symptom or contrasts areas:
Chân tôi vẫn còn đau, nhưng tay thì đỡ rồi.
My leg still hurts, but my arm is better now.
This is not identical in information structure to Tôi vẫn còn đau chân “My leg still hurts.” Chân tôi establishes the leg itself as topic; tôi in the second pattern presents the person as affected. Body-part-first order is fully grammatical and need not be contrastive, but person-first order is a frequent neutral way to report what the person is experiencing. Vietnamese word order therefore does more than replace English possessive morphology.
Body-part expressions also support change-of-state predicates: đỏ mặt “blush,” tê chân “have a numb leg,” mỏi mắt “have tired eyes.” Some are lexicalized enough to develop figurative meanings. Đau đầu can mean literal headache or, (informal), that a problem is troublesome. Context resolves the reading.
Chuyện giấy tờ này làm tôi đau đầu cả tuần.
This paperwork problem has been giving me a headache all week.
Here làm + affected person + đau đầu is causative. The bodily expression remains the result predicate.
Beneficial and adverse viewpoints
Bị commonly signals an adverse bodily event. Được can present access to a beneficial service or favorable treatment, though it is not required whenever the outcome is good.
Tôi được bác sĩ kiểm tra mắt miễn phí ở trường.
I had my eyes examined free of charge at school.
Compare Tôi bị bác sĩ kiểm tra mắt: without a special coercive context it sounds odd because a routine examination is not normally framed as misfortune. The choice is about speaker viewpoint, not active versus passive morphology alone.
A compact decision aid
| Situation | Useful frame | Example |
|---|---|---|
| bodily state, possessor obvious | person + state + body part | Tôi đau đầu. |
| adverse injury or result | person + bị + result + body part | Anh ấy bị gãy chân. |
| self-directed routine action | person + verb + bare body part | Em rửa tay đi. |
| another person's body part | verb + body part + possessor | Nó nắm tay tôi. |
| service for an affected person | verb + body part + cho + person | Bác sĩ khám mắt cho tôi. |
| contrast between body parts | body part + possessor + topic frame | Chân tôi đau, tay thì không. |
Common Mistakes
1. Repeating a possessive where the affected person is already clear. The result is understandable but heavy and English-like.
❌ Tôi đau đầu của tôi.
Incorrect — tôi already identifies whose head is affected.
✅ Sáng nay tôi đau đầu.
I have a headache this morning.
2. Inserting có to imitate English have a headache. Đau đầu itself is the predicate.
❌ Tôi có một đau đầu.
Incorrect — Vietnamese does not package the ordinary bodily state as possessed count noun here.
✅ Tôi bị đau đầu từ tối qua.
I've had a headache since last night.
3. Treating bị as a neutral past-tense marker. Use it only when the affected/adverse viewpoint is intended.
❌ Sáng nay tôi bị rửa tay trước khi ăn.
Incorrect — routine washing is not passivized or made past by bị.
✅ Sáng nay tôi rửa tay trước khi ăn.
This morning I washed my hands before eating.
4. Building an English-style body-part subject with a classifier, possessive, and copula. Body-part-first order itself is possible; the problem is the unnecessary packaging in this sentence.
❌ Cái đầu của tôi là đau.
Incorrect — it combines an unnecessary classifier, possessive, and copula.
✅ Tôi đau đầu.
My head hurts.
5. Using của whenever English uses a possessive. Compact noun–possessor order is usually more natural for body parts.
❌ Khi sang đường, nó nắm chặt của tôi tay.
Incorrect — của tôi cannot be inserted before tay in this compact possessor pattern.
✅ Khi sang đường, nó nắm chặt tay tôi.
She held my hand tightly while we crossed the street.
Key Takeaways
- When the affected person is already prominent, Vietnamese commonly uses a bare body part: Tôi đau đầu, Tôi bị đứt tay.
- Use body part + possessor for compact explicit possession, and cho + person in many service or benefactive frames.
- Bị and được express adverse or favorable viewpoint; they are not tense endings or mechanically required passive auxiliaries.
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Start learning Vietnamese →Related Topics
- Verb–Noun CollocationsA2 — How Vietnamese conventionalizes actions through preferred verb–noun pairings rather than literal English equivalents.
- Experiencer PredicatesB2 — How Vietnamese organizes emotions, preferences, and mental states around the person who experiences them.
- Đưa: Hand, Take, or Bring with Deictic ContextA2 — Use đưa for handing something over, taking or bringing someone somewhere, and directing an entity toward an endpoint.
- Buộc Phải and External CompulsionA2 — Express external compulsion with buộc phải, bị buộc phải, and the full pattern in which one party forces another to act.