Đừng quên mang hộ chiếu nhé.

Đừng is used to tell someone not to do something. It is very common in negative commands and reminders.

So:

• đừng quên = don’t forget

A useful pattern is:

• đừng + verb

Examples:

• Đừng lo. = Don’t worry.
• Đừng nói vậy. = Don’t say that.

In this sentence, đừng makes the whole thing a reminder: Don’t forget...

Vietnamese often leaves out the subject when it is obvious from context.

So instead of saying something like You, don’t forget to bring your passport, Vietnamese can simply say:

• Đừng quên mang hộ chiếu nhé.

The listener understands that the speaker is talking to them.

If you wanted to include a pronoun, you could, depending on who you are speaking to:

• Anh đừng quên mang hộ chiếu nhé.
• Chị đừng quên mang hộ chiếu nhé.
• Em đừng quên mang hộ chiếu nhé.
• Bạn đừng quên mang hộ chiếu nhé.

But in everyday speech, leaving it out is very natural.

Quên means to forget.

Here it comes right after đừng, so:

• đừng quên = don’t forget

After quên, Vietnamese often puts another verb or an action:

• quên mang hộ chiếu = forget to bring the passport
• quên gọi điện = forget to call
• quên làm bài tập = forget to do homework

So the structure is:

• đừng quên + action

In your sentence, the action is mang hộ chiếu.

Mang means to carry / bring / take along.

In this sentence, mang hộ chiếu means bring the passport or take the passport with you.

Vietnamese has a few verbs that can overlap in meaning:

• mang = carry, bring, take along
• đem = bring, take
• cầm = hold, carry in the hand

For a passport, mang sounds very natural because you are taking it with you.

You could also hear:

• Đừng quên đem hộ chiếu nhé.

That is also natural in many situations.

Sometimes people say:

• mang theo = bring along / take with you

So:

• Đừng quên mang theo hộ chiếu nhé.

This is slightly more explicit, but mang alone is already fine.

Vietnamese usually follows verb + object order, just like English in many simple sentences.

So:

• mang hộ chiếu = bring passport
• ăn cơm = eat rice / eat a meal
• uống nước = drink water

That means:

• mang = the verb
• hộ chiếu = the object

So the order is natural Vietnamese word order: verb first, object after.

Hộ chiếu is the standard Vietnamese word for passport.

It is the normal word you would see in everyday speech, airports, government forms, and travel contexts.

Examples:

• Tôi quên hộ chiếu rồi. = I forgot my passport.
• Bạn nhớ mang hộ chiếu nhé. = Remember to bring your passport.

You do not need a classifier here. Just mang hộ chiếu is perfectly natural.

Nhé is a very common sentence-final particle in Vietnamese. It often makes the sentence sound:

• softer
• friendlier
• more gentle
• more like a reminder than a strict command

So:

• Đừng quên mang hộ chiếu. = Don’t forget to bring your passport.
• Đừng quên mang hộ chiếu nhé. = Don’t forget to bring your passport, okay? / alright? / please remember

There is no single perfect English translation for nhé. Often it is best understood as a tone marker rather than a separate word with a fixed meaning.

It helps the sentence feel warm and natural.

It is generally casual to neutral-friendly.

Because of nhé, it sounds like a gentle reminder you might say to:

• a friend
• a family member
• a coworker you are comfortable with
• a travel companion

It is not rude. In fact, nhé helps soften it.

If you wanted a more formal version, you might say something like:

• Xin đừng quên mang theo hộ chiếu.

Or, depending on the relationship, add an appropriate pronoun:

• Anh/chị đừng quên mang hộ chiếu nhé.

So the original sentence is natural and polite in everyday speech, but not especially formal.

Yes, absolutely.

• Nhớ mang hộ chiếu nhé. = Remember to bring your passport.

This is extremely natural.

The difference is:

• Đừng quên mang hộ chiếu nhé. = Don’t forget to bring your passport.
• Nhớ mang hộ chiếu nhé. = Remember to bring your passport.

These are very close in meaning. In many real situations, they are interchangeable.

A small nuance:

• đừng quên focuses on avoiding forgetting
• nhớ directly tells someone to remember

Both are common and useful.

A rough pronunciation guide for English speakers is:

• Đừng ≈ zoong or yuhng depending on accent, but with a short vowel and a heavy falling tone
• quên ≈ kwayn
• mang ≈ mahng
• hộ ≈ hoh with a heavy falling tone
• chiếu ≈ chee-uhw with a rising-dipping tone
• nhé ≈ nyeh with a rising tone

A few important notes:

• đ is not the same as d in Vietnamese.

  • đ is pronounced more like English d
  • plain d in northern Vietnamese is more like z, and in southern Vietnamese more like y

• Tones matter a lot.
  Changing the tone can change the word.

• nh in nhé sounds like the ny in canyon.

If you are learning pronunciation, it is best to listen to native audio, because tone and vowel quality are hard to capture well with English spelling alone.

Usually, no. In Vietnamese, this kind of sentence is very normal.

A few things already make it sound natural and not harsh:

• đừng quên is a common reminder formula
• the missing pronoun is normal in context
• nhé softens the sentence

English often relies on words like please, but Vietnamese often uses sentence particles like nhé instead.

So Đừng quên mang hộ chiếu nhé. already sounds like a friendly reminder, not an aggressive command.

If you want to make it even softer, context and tone of voice matter a lot. You could also say:

• Nhớ mang hộ chiếu nhé.
• Nhớ mang theo hộ chiếu nha.

Both sound very natural in casual speech.