Comparison guide
Commonly Confused Vietnamese Grammar
Similar English translations can hide important differences in Vietnamese time, tone, structure, and register.
High-value contrasts
đã and rồi
đã normally appears before the verb to frame a completed event; rồi often follows the event and can signal completion or a new state.
đang and ở
đang marks an action in progress; ở expresses location, residence, or presence.
sẽ and định
sẽ presents a future event or prediction; định expresses a present intention or plan.
mà and nhưng
nhưng is a straightforward contrastive connector; mà has wider structural and conversational functions.
thì and là
thì marks a topic, condition-result boundary, or contrast; là links a subject to a noun identity or definition.
được and bị
Both can appear in passive-like structures, but được often suggests a favorable or permitted result while bị usually signals an unwanted one.
Continue with detailed grammar points
là
to be (is/are/am)
'là' is commonly used to mean 'to be' and is a fundamental structure for learners.
Tôi là sinh viên.
I am a student.
đã
already
'đã' is commonly used to indicate that an action has already happened.
Tôi đã ăn cơm.
I have already eaten.
đang
currently (in progress)
'đang' is commonly used to indicate an action is currently in progress.
Tôi đang học tiếng Việt.
I am studying Vietnamese.
sẽ
will (future tense)
'sẽ' is commonly used to indicate future actions or events.
Ngày mai tôi sẽ đi Hà Nội.
I will go to Hanoi tomorrow.
ở
at, in
'ở' is commonly used to indicate location, equivalent to 'at' or 'in' in English. It is a fundamental structure for learners to master.
Tôi ở Hà Nội.
I am in Hanoi.
được
can; be (passive); receive/get
'được' is commonly used to express 'can', 'be (passive)', or 'receive/get'. It is an essential Vietnamese structure for English speakers to master.
Tôi nghe được tiếng Việt một chút.
I can understand a little Vietnamese.
bị
to be (passive); to suffer
bị is commonly used to express passive or adverse experiences, essential for learners.
Tôi bị mất ví.
I lost my wallet.
mà
But; Though; You know
'mà' is frequently used to express mild contrast ('but', 'though') or as a sentence-final particle indicating reminder, explanation, or emphasis, essential for learners.
Anh ấy thông minh mà lười.
He is smart but lazy.
thì
then; so; topic marker
The particle thì is commonly used to mean "then", "so", or as a topic marker. It is an essential structure for learners to master early on.
Cà phê thì tôi thích, nhưng trà thì không.
As for coffee, I like it, but as for tea, I don't.
nhưng mà
But; However
nhưng mà is a very common spoken form of 'but' or 'however'.
Tôi muốn đi, nhưng mà tôi bận.
I want to go, but I am busy.
rồi
already; (completed action marker)
'rồi' is usually placed at the end of a sentence to indicate that an action has already happened or a state has changed.
Tôi ăn cơm rồi.
I have eaten already.
định
intend to; plan to
'định' expresses the speaker's intention or plan, focusing on the plan rather than certainty of occurrence.
Tôi định học tiếng Việt vào cuối tuần.
I plan to study Vietnamese this weekend.