Thủ thư kiểm tra hạn trả.

Vietnamese basic word order is usually Subject + Verb + Object, much like English.

• Thủ thư = the subject
• kiểm tra = the verb
• hạn trả = the object

So:

• Thủ thư → the librarian
• kiểm tra → checks
• hạn trả → the due date / return deadline

Putting kiểm tra first would normally remove the clear subject-first structure and sound wrong in this context.

It can mean either the librarian or a librarian, depending on context.

Vietnamese usually does not require articles like a, an, or the. So thủ thư by itself is neutral. The listener figures out whether it is definite or indefinite from the situation.

For example:

• Thủ thư kiểm tra hạn trả. → The librarian checks the due date / A librarian checks the due date
• If the context is a specific librarian at a library desk, English would usually translate it as the librarian.

Yes. Thủ thư is the standard word for librarian.

It is a Sino-Vietnamese compound:

• thủ relates to keeping or managing
• thư relates to books/documents/writings

You do not need to analyze it every time, though. For learners, it is best to memorize thủ thư as one vocabulary item meaning librarian.

Kiểm tra is a very common verb, meaning to check, inspect, or examine.

It is written as two syllables with a space, because Vietnamese writing separates syllables, but functionally it behaves like one lexical item. So learners often think of it as a single vocabulary word.

Examples:

• kiểm tra bài tập = check homework
• kiểm tra giấy tờ = check documents
• kiểm tra hạn trả = check the due date

Depending on context, it can also be used as a noun in some cases, but here it is clearly a verb.

Hạn trả means the deadline for returning something, especially library materials.

Breakdown:

• hạn = limit, deadline, due date
• trả = return, give back, pay back

So hạn trả is more precise than trả alone. If you only said trả, that would just mean return or give back, not specifically the due date for returning.

In a library context:

• hạn trả sách = book return deadline / due date for the book
• hạn trả by itself is often enough if the object is understood

Yes. Trả is a flexible verb and can mean:

• return something
• give back
• pay money
• reply back in some compounds

Its meaning depends on context.

Examples:

• trả sách = return a book
• trả tiền = pay money
• trả lời = answer, reply

In hạn trả, the context is a library, so trả clearly means return.

A word like sách can be added, but it is not always necessary.

Vietnamese often leaves out information that is obvious from context. In a library setting, hạn trả already strongly suggests the due date for returning borrowed materials, often books.

So both are possible:

• Thủ thư kiểm tra hạn trả. = The librarian checks the due date.
• Thủ thư kiểm tra hạn trả sách. = The librarian checks the book’s due date / the due date for returning the book.

The shorter version is natural when everyone already knows what is being discussed.

Yes. It is a short, natural, complete sentence.

Vietnamese does not need:

• articles like the
• object markers like in some other languages
• verb conjugations like checks/checked/will check

A simple three-part sentence can be fully grammatical:

• Thủ thư = subject
• kiểm tra = verb
• hạn trả = object

However, in real conversation or writing, Vietnamese often adds context words if needed, such as:

• Thủ thư đang kiểm tra hạn trả. = The librarian is checking the due date.
• Thủ thư kiểm tra hạn trả của cuốn sách. = The librarian checks the due date of the book.

A rough pronunciation guide for an English speaker:

• Thủ thư ≈ too thu but with Vietnamese tones and unaspirated sounds
• kiểm tra ≈ kee-um cha / tramix of tr and ch-like sound depending on accent
• hạn trả ≈ hahn cha / trah with tones

A few important points:

• th in Vietnamese is an aspirated t sound, not the English th in think
• tr in southern speech may sound closer to ch for some speakers
• tones matter a lot:
  • thủ has a dipping/asking-type tone
  • thư is level
  • kiểm has a broken/dipping tone
  • tra is level
  • hạn is heavy/falling glottalized
  • trả has a rising-dipping tone

If you want to speak clearly, it is best to learn the sentence from audio rather than relying only on English approximations.

Usually just thủ thư.

Adding người is usually unnecessary here. Người can mean person, and sometimes it appears in phrases referring to people, but with professions like thủ thư, giáo viên, bác sĩ, and nhân viên, Vietnamese normally uses the profession word directly.

So:

• Thủ thư kiểm tra hạn trả. = natural
• Người thủ thư kiểm tra hạn trả. = unusual in this basic sentence

You can add đang before the verb:

• Thủ thư đang kiểm tra hạn trả.

Here, đang marks an action in progress, similar to English is checking.

Compare:

• Thủ thư kiểm tra hạn trả. = The librarian checks the due date / is checking the due date, depending on context
• Thủ thư đang kiểm tra hạn trả. = The librarian is checking the due date

Vietnamese often leaves tense and aspect to context, but đang is very useful when you want to be explicit.