One form, always

ăn (eat) is always ăn. I eat, she ate, they will eat — the verb never changes. The person and the time come from other words in the sentence.

VietnameseLiteralEnglish
Tôi ănI eatI eat / ate / am eating — context decides
Anh ấy ănhe eatsHe eats / ate
Họ ănthey eatThey eat / ate
Hôm qua tôi ăn phởyesterday I eat phởI ate phở yesterday

Time words like hôm qua (yesterday) do the work English puts on the verb.

The three core markers: đã, đang, sẽ

MarkerRough roleExample
đãcompleted / alreadyTôi đã ăn — I've eaten / I ate
đangin progress right nowTôi đang ăn — I'm eating
sẽfuture / intentionTôi sẽ ăn — I'll eat
vừa mớijust didTôi vừa mới đến — I just arrived
chưanot yetTôi chưa ăn — I haven't eaten yet
đã từnghave ever doneTôi đã từng đến Việt Nam — I've been to Vietnam before

Tôi đã ăn

I ate / I've eaten

Tôi đang ăn

I'm eating (right now)

Tôi sẽ ăn

I'll eat

Tôi vừa mới đến

I just arrived

Tôi chưa ăn

I haven't eaten yet

Time anchors — the easy way

Drop a time word in and the sentence sorts itself out. These are the highest-frequency anchors:

VietnameseEnglish
hôm quayesterday
hôm naytoday
ngày maitomorrow
ngày kiathe day after tomorrow (S: ngày mốt)
bây giờnow
tuần nàythis week
tuần saunext week
tuần trướclast week
tháng nàythis month
tháng saunext month

Ngày mai tôi đi Hà Nội

Tomorrow I'm going to Hanoi

No marker needed — ngày mai already says 'future'.

Hôm qua tôi ăn phở

Yesterday I ate phở

Bây giờ tôi đang học

I'm studying now

Tuần sau tôi sẽ về

Next week I'll go back

Why context matters more than markers

English grammar forces every verb to declare its tense. Vietnamese doesn't — and that's a feature, not a gap. The marker appears when the speaker wants to emphasize completion, progress, or intention:

  • Tôi ăn rồi — 'I ate already' (rồi marks it as done, very common colloquially).
  • Tôi đã ăn — the same completion, a bit more explicit.
  • Hôm qua tôi ăn phở — time word alone; nobody asks 'ate or eat?'.

Summary

Verbs never change; đã/đang/sẽ mark completed, in-progress, future when time words or context don't already make it clear; time anchors like hôm qua and ngày mai do most of the daily work. Next: questions and negation — how to say no and ask anything.

Mini practice

Q1. Vietnamese verbs change form for…
  • past tense
  • person
  • nothing — one form always

Answer: nothing — one form always

Q2. 'đang' marks…
  • completion
  • action in progress
  • future

Answer: action in progress

Q3. 'Tôi chưa ăn' means…
  • I already ate
  • I haven't eaten yet
  • I'll eat

Answer: I haven't eaten yet

Q4. 'ngày mai' means…
  • yesterday
  • today
  • tomorrow

Answer: tomorrow

Q5. Which is TRUE of đã/đang/sẽ?
  • they're mandatory on every verb
  • they're optional when time words or context already make the timing clear
  • they're irregular verb endings

Answer: they're optional when time words or context already make the timing clear