यात्री सीट पर बैठता है।

A word-by-word breakdown is:

• यात्री = passenger / traveler
• सीट = seat
• पर = on / at
• बैठता है = sits

So the structure is literally something like:

passenger seat on sits

That is normal Hindi word order.

Hindi usually prefers Subject + Object/Location + Verb order, while English usually uses Subject + Verb + Object/Location.

So:

• English: The passenger sits on the seat.
• Hindi: यात्री सीट पर बैठता है।

The verb usually comes near the end in Hindi. That is one of the most important word-order patterns to get used to.

पर is a postposition, and here it means on or sometimes at, depending on context.

In Hindi, postpositions come after the noun, not before it like English prepositions:

• English: on the seat
• Hindi: सीट पर

So सीट पर is literally seat on.

With chairs, seats, benches, and similar places, Hindi commonly uses पर.

In standard Hindi, the habitual present is usually made with:

• the verb form like बैठता / बैठती / बैठते
• plus a form of होना such as है / हैं

So:

• बैठता है = he sits / the passenger sits
• बैठती है = she sits
• बैठते हैं = they sit / you sit (formal) / masculine plural

Using just बैठता by itself would sound incomplete in normal standard prose.

Because बैठता agrees with a masculine singular subject.

Here, the subject is यात्री, and the sentence is treating that passenger as masculine singular.

If the passenger were female, you would normally say:

यात्री सीट पर बैठती है।

or more explicitly:

महिला यात्री सीट पर बैठती है।

So the ending changes to match the gender and number of the subject.

यात्री can refer to a passenger of either gender. It is often treated as a common-gender noun in actual use.

What usually tells you the gender is the verb agreement:

• यात्री सीट पर बैठता है। = the passenger is masculine
• यात्री सीट पर बैठती है। = the passenger is feminine

So even if the noun itself stays the same, the verb can show the gender.

Most naturally, बैठता है is the habitual/simple present form, so it usually means:

• sits
• does sit
• usually sits

It is not the most natural way to say is sitting right now.

For an ongoing action, Hindi more often uses forms like:

• बैठ रहा है = is sitting down / is sitting
• बैठा है = is seated / is sitting

So यात्री सीट पर बैठता है is best understood as a general or habitual statement, not a moment-in-progress statement.

Hindi does not have articles like English a, an, and the.

So यात्री can mean:

• a passenger
• the passenger

and सीट can mean:

• a seat
• the seat

The exact meaning depends on context.

That is why Hindi learners often feel that the sentence looks a little more bare than the English version.

Many Hindi nouns do not visibly change in this kind of phrase, and loanwords like सीट often stay the same in everyday use.

So:

• सीट पर = on the seat

Even though पर is a postposition, the noun here does not visibly change.

For a beginner, the simplest way to think about it is: just learn noun + पर as the normal pattern.

Usually, सीट पर is the natural choice.

• पर = on / on top of / at
• में = in / inside

With a chair or seat, Hindi normally says बैठना ... पर:

• कुर्सी पर बैठना = to sit on a chair
• सीट पर बैठना = to sit on a seat

Even if English sometimes says sit in a seat, Hindi commonly uses पर here.

The dictionary form is बैठना, which means to sit.

From that verb, Hindi makes forms like:

• बैठता है = he sits
• बैठती है = she sits
• बैठते हैं = they sit / you sit (formal)

So when learning vocabulary, you would memorize बैठना, not बैठता है.

If the subject is plural, the verb changes:

• यात्री सीट पर बैठते हैं। = The passengers sit on the seat / The passengers sit in the seats

If the group is all feminine, you may also hear:

• यात्रिणियाँ सीट पर बैठती हैं for a specifically feminine noun, though this is much less common in everyday speech than simply using यात्री.

At a beginner level, the most useful pattern is:

• singular masculine: बैठता है
• singular feminine: बैठती है
• plural: बैठते हैं