Vietnamese grammar, step by step
A guided tour through Vietnamese grammar with glossed examples that show how each piece of a sentence fits together.
Grammar Walkthrough
Discover how the language works through examples
Vietnamese has no inflection at all — no verb endings, no cases, no gender — but six tones, a rich pronoun system tied to social relationships, and particles that do the work of grammar.
The verb never changes
no inflectionThe verb "nói" is identical in all three sentences. What tells you who is speaking?
Vietnamese verbs never change form. Person is shown by the pronoun, tense by time words or aspect particles. This makes the verb system dramatically simpler than European languages.
SVO word order
SVO orderCompare the sentence order with English. What comes after the verb? Where does the adjective "hay" (interesting) sit — before or after the noun?
Vietnamese is Subject–Verb–Object, the same basic order as English. Adjectives, however, come after the noun rather than before it.
Pronouns are social relationships
pronoun system| Word | Literal meaning | Use as "I" | Use as "you" |
|---|---|---|---|
| tôi | servant (archaic) | formal/neutral self-reference | — |
| mình | self | informal self-reference | addressing close friend |
| anh | older brother | male speaker (respectful) | addressing older male |
| chị | older sister | female speaker (respectful) | addressing older female |
| em | younger sibling | self when deferring | addressing younger person |
| bạn | friend | — | addressing a peer (neutral) |
In Vietnamese, the word you use for "I" and "you" depends on your relationship with the other person. How does that differ from English?
Vietnamese pronouns encode social relationship, age, and formality. The same word can mean "I" when you are the speaker and "you" when addressing the other person.
Classifiers between number and noun
classifiers| Classifier | Used for | Example |
|---|---|---|
| con | animals, rivers | con mèo (cat) |
| cái | general objects | cái bàn (table) |
| quyển / cuốn | books, volumes | quyển sách (book) |
| cây | plants, long objects | cây bút (pen) |
| tờ | flat things, paper | tờ báo (newspaper) |
| chiếc | individual items (vehicles, clothing) | chiếc xe (car) |
An extra word appears between the number and the noun. What type of noun goes with each classifier word?
Most Vietnamese nouns require a classifier between a number and the noun. Classifiers group nouns by category — animals, objects, volumes, etc. — and must be chosen to match the noun.
Aspect markers: đã, đang, sẽ, chưa
aspect markers| Marker | Meaning | Example |
|---|---|---|
| đã | anterior / past relevance | Tôi đã ăn (I ate / I have eaten) |
| đang | ongoing right now | Tôi đang ăn (I am eating) |
| sẽ | future | Tôi sẽ ăn (I will eat) |
| chưa | not yet (implies it will happen) | Tôi chưa ăn (I haven't eaten yet) |
A small word appears before the verb in each sentence. The verb "nói" does not change. What does each pre-verbal word tell you?
Vietnamese has no tense endings — time and aspect are shown by particles: pre-verbal markers (đã, đang, sẽ) sit before the verb, while post-verbal completive/resultative markers like xong and được come after it. When markers combine, their order is strict: sẽ (future) > đã (anterior) > đang (progressive) — never reversed.
Post-verbal markers: after the verb
post-verbal markers| Marker | Literal | Post-verbal meaning | Example |
|---|---|---|---|
| xong | finish | process completed | đọc xong (finished reading) |
| hết | end | quantity used up | ăn hết (ate all of it) |
| ra | out | discovery / creation | tìm ra (found / discovered) |
| được | come to have | successful outcome | kiếm được (managed to find) |
A new word appears between the verb and its object — after the verb, not before it. What does each of these post-verbal words add to the meaning?
Vietnamese has post-verbal markers that sit between the verb and its object, showing how the action was completed. When two combine, completive markers (xong, hết, ra) always come before resultative markers (được) — the order is fixed. A separate sentence-final adverb rồi ('already') frequently co-occurs with these markers but, unlike them, must stay at the right edge of the sentence and cannot intervene between verb and object.
Negation: không and chưa
negationTwo different negation words appear across these examples. When do you use each one?
Use không before the verb for general negation, and không phải to negate nouns or identity. Use chưa (not yet) to say something hasn't happened yet — it implies the action may still happen.
Asking questions
questions| Word | Meaning |
|---|---|
| gì | what |
| ai | who |
| ở đâu | where |
| khi nào | when |
| tại sao / vì sao | why |
| như thế nào / sao | how |
The yes/no question looks almost identical to a statement. What was added — and where? And where does the question word "gì" (what) sit in example 3?
For yes/no questions, add không at the end, or wrap the verb with có...không. Question words stay in the same position as their answer — they do not move to the front.
Adjectives follow the noun
adjective positionIn these examples, the describing word comes after the thing it describes. And where does "rất" (very) appear?
Adjectives follow the noun in Vietnamese and never change form for number or gender. The intensifier "rất" (very) comes directly before the adjective.
Possession with của
possessionIn the first example, "của" marks possession — but in the second example it is dropped entirely. What makes "của" optional here?
The word "của" marks possession and follows the possessed noun. It can be dropped when the relationship is obvious, but must be kept when the possessor is complex.
Modal verbs before the main verb
modals| Modal | Meaning | Example |
|---|---|---|
| có thể | can / may | Tôi có thể nói (I can speak) |
| muốn | want to | Tôi muốn nói (I want to speak) |
| phải | must / have to | Tôi phải nói (I must speak) |
| cần | need to | Tôi cần nói (I need to speak) |
| nên | should | Tôi nên nói (I should speak) |
A new word appears before "nói" in each sentence. The verb itself stays unchanged. What does each added word contribute to the meaning?
Vietnamese modal verbs come directly before the main verb and never change form. They can also stack — more than one modal can appear in sequence.
Serial verbs: chained without connectors
serial verbsTwo verbs appear in sequence with no connecting word between them. How do you know the order of events?
Vietnamese chains verbs directly without conjunctions. The first verb typically expresses motion or direction; the second expresses purpose or result. The sequence of the verbs mirrors the sequence of events.
Topic fronting: comment follows
topic-commentThe first element of the sentence is "tiếng Việt," but it is not the grammatical subject — the subject "tôi" comes later. What role does the fronted element play?
Any element can be moved to the front of the sentence as a topic. Position alone marks it — no special particle is needed. This topic-comment structure is very natural in Vietnamese conversation.
Relative clauses follow the noun
relative clausesWhere does the relative clause sit — before or after the noun it describes? And when does the word "mà" appear?
Relative clauses follow the noun in Vietnamese. Simple subject relatives use bare juxtaposition; "mà" is used when the head noun is the object inside the relative clause.
Six tones: pitch changes meaning
tones| Tone | Name | Mark | Example | Meaning |
|---|---|---|---|---|
| Level | ngang | (none) | ma | ghost |
| Falling | huyền | ` | mà | but / which |
| Rising broken | hỏi | ̉ | mả | tomb |
| Rising | sắc | ´ | má | mother / cheek |
| Heavy falling | nặng | . | mạ | rice seedling |
| Creaky rising | ngã | ~ | mã | horse / code |
Each word in this list is written with the same consonants and vowel, but a different mark above or below. What changes when the mark changes?
Vietnamese (Northern dialect) has six tones. The same syllable with a different tone is a completely different word. Tones are written as diacritics on the vowel.
Reduplication: từ láy
reduplication| Pattern | Effect | Example | Meaning |
|---|---|---|---|
| Total: A → A A | attenuation ("-ish") | đỏ đỏ | reddish |
| Alliterative: A B (same onset) | emphatic / vivid | sạch sẽ, mạnh mẽ | clean and tidy / powerful |
| Sound copy: A A (sound-symbolic) | onomatopoeia | ào ào, ầm ầm | rushing / thunderous |
| -iếc suffix: X X+iếc | ironic / dismissive | sách siếc | books and such |
Look at đỏ đỏ, sạch sẽ, ào ào, sách siếc — each is a base syllable paired with a copy or near-copy. What does the second syllable do that an English speaker would never expect a word to do?
About 10% of the Vietnamese lexicon is built by pairing a syllable with a partner — an exact copy, a copy with a slightly different tone or vowel, or a fixed dismissive suffix. The pairing softens an adjective, intensifies it, paints a sound, or adds attitude. With no inflection available, this is one of the language's main ways of coloring meaning. (The "sẽ" inside sạch sẽ is NOT the future marker from step 5 — same spelling, different morpheme.)
The full picture
putting it togetherHow many grammar patterns from earlier steps can you identify in this sentence?
Vietnamese grammar works through particles, word order, and pronoun choice — never through inflection. Each element stays in its fixed form; meaning is built by what you add, not how you change what is already there.