qǐng dài yuánjiàn.

请 makes the sentence polite. Here it works like please in English.

So 请带原件。 means something like:

• Please bring the original document(s).

In other contexts, 请 can also mean to invite or to treat someone, but in this sentence it is just the polite marker please.

In Mandarin, the subject is often left out when it is obvious from context.

So 请带原件。 is understood as:

• Please bring the original document(s).
• literally, something like Please bring originals.

This is very common in instructions, notices, forms, and service situations. Mandarin often sounds more compact than English.

Here 带 means to bring along, to take with you, or to have with you.

It often suggests carrying something from one place to another, especially when going somewhere.

Examples:

• 请带护照。 — Please bring your passport.
• 带雨伞。 — Bring an umbrella.

So in this sentence, 带 means you should come with the original document in your possession.

原件 means the original document/item, as opposed to a copy.

Very often it is used for paperwork, such as:

• passport
• ID card
• certificate
• contract
• transcript

A helpful contrast:

• 原件 = original
• 复印件 = photocopy
• 副本 = copy / duplicate

So if an office says 请带原件。, they mean they do not want just a photocopy.

Mandarin nouns usually do not show singular vs. plural unless the speaker wants to make it explicit.

So 原件 can mean:

• the original
• original documents
• the original copy

The exact number depends on context.

For example:

• If they asked for one passport, 原件 probably means the original passport.
• If they asked for several certificates, 原件 may mean the original documents.

English usually forces you to choose singular or plural, but Mandarin often leaves that open.

Measure words are usually needed with numbers or demonstratives.

For example:

• 一件原件 — one original document/item
• 这件原件 — this original item

But in 请带原件。, there is no number and no demonstrative, so no measure word is needed.

This is normal.

Yes, it is basically a polite instruction or request.

It is common in:

• office notices
• application instructions
• customer service messages
• appointment reminders

It is polite because of 请, but it is still directive: the speaker expects you to bring the original.

Yes, 请带上原件。 is very natural.

The difference is small:

• 请带原件。 — Please bring the original(s).
• 请带上原件。 — Please bring the original(s) along / make sure to bring the original(s).

The 上 often adds a sense of along with you or don’t forget to include it.

In many everyday situations, both are acceptable.

Both can relate to carrying something, but they are not exactly the same.

• 带 = bring along / take with you
• 拿 = take / hold / pick up / carry in the hand

For this kind of instruction, 带 is more natural because it focuses on having the document with you when you come.

Compare:

• 请带原件来。 — Please bring the original with you when you come.
• 请拿一下这个。 — Please take/hold this for a moment.

So 带 fits official reminders better.

It is pronounced yuánjiàn.

Tone breakdown:

• 原 = yuán — 2nd tone
• 件 = jiàn — 4th tone

A rough English approximation:

• yuan sounds somewhat like ywen or yoo-en blended quickly
• jian sounds somewhat like jee-en with a short vowel, but not exactly like English

A few pronunciation tips:

• ü is not used in the spelling here, so yuan is not the same as yüan
• j in pinyin is not the English j in job; it is a lighter sound made with the tongue closer to the front of the mouth

It is:

• qǐng dài yuánjiàn

Tone pattern:

• 请 — 3rd tone
• 带 — 4th tone
• 原 — 2nd tone
• 件 — 4th tone

So the rhythm is:

• 3rd + 4th + 2nd + 4th

If spoken naturally, the sentence is short and firm, but still polite because of 请.

Yes, it sounds neutral to fairly formal, especially in written instructions.

It is very common in practical situations like:

• visa applications
• school registration
• hospital appointments
• government paperwork
• bank services

It is not stiff or old-fashioned. It is standard modern Mandarin.

Most often, yes, it is used for documents or official paperwork, but more broadly it can mean the original item as opposed to a copy or reproduction.

Still, in everyday real-life usage, when people see 请带原件。, they usually think of official documents.

You could say:

• 请带原件来。 — Please bring the original(s) here.
• 请您带上原件。 — Please bring the original(s) with you.
• 办理时请带原件。 — Please bring the original(s) when handling the procedure.
• 请携带原件。 — Please carry/bring the original(s).
  
  • 携带 is more formal than 带.

These are all natural expansions depending on how formal or specific you want to be.