यात्री ट्रेन में चढ़ता है।

The sentence follows a very common Hindi pattern:

• यात्री = subject
• ट्रेन में = location/destination phrase
• चढ़ता है = verb phrase

So the structure is basically:

Subject + place phrase + verb

Hindi usually keeps the main verb at the end, unlike English.

Because Hindi uses postpositions, not prepositions.

In English, words like in, on, to come before the noun:

• in the train

In Hindi, the equivalent word comes after the noun:

• ट्रेन में

So में means in / into, but it comes after ट्रेन.

With vehicles like trains, buses, and cars, Hindi usually uses में when talking about getting in or boarding:

• ट्रेन में चढ़ना
• बस में चढ़ना
• गाड़ी में चढ़ना

This is because the idea is entering or getting into the vehicle.

पर usually suggests being on top of a surface or on something more externally:

• मंच पर चढ़ना = to climb onto a stage
• छत पर चढ़ना = to climb onto a roof

So ट्रेन में चढ़ता है is the natural choice.

चढ़ता है is the habitual/simple present form of the verb चढ़ना.

It breaks down like this:

• चढ़- = verb root
• -ता = habitual marker for masculine singular
• है = is, the present form of होना

So चढ़ता है literally has the structure of gets on / boards / climbs in a habitual or general sense.

Grammatically, चढ़ता है is the habitual/simple present, so its most literal sense is something like:

• boards the train
• gets on the train

It is not the normal form for an action happening right now.

If you want to say is boarding the train right now, Hindi normally uses the progressive:

• यात्री ट्रेन में चढ़ रहा है।

So:

• चढ़ता है = boards / gets on
• चढ़ रहा है = is boarding / is getting on

Because the verb agrees with a masculine singular subject here.

In this sentence:

• चढ़ता है = masculine singular

If the passenger were female, you would usually say:

• यात्री ट्रेन में चढ़ती है।

If plural or masculine/honorific:

• यात्री ट्रेन में चढ़ते हैं।

So the -ता / -ती / -ते part changes according to gender and number.

Not always.

A lot of learners notice -ी and expect a feminine noun, but Hindi has many nouns ending in -ी that are not feminine in the usual way. For example:

• विद्यार्थी
• अधिकारी
• यात्री

So the ending -ी does not automatically make a noun feminine.

In this sentence, the verb चढ़ता है tells you the passenger is being treated as masculine singular. If the passenger were female, the verb would normally change to चढ़ती है.

Because ने is not used in this kind of sentence.

A simple way to think about it is:

• ने is mainly used with perfective transitive clauses
• This sentence is habitual/simple present
• The verb चढ़ना here is not being used transitively with a direct object

So the subject just appears as:

• यात्री

not

• यात्री ने

That is why यात्री ट्रेन में चढ़ता है is correct.

No. In this sentence, ट्रेन में is not a direct object. It is a postpositional phrase showing where the action is directed.

So:

• यात्री = subject
• ट्रेन में = into the train / on the train
• चढ़ता है = boards / gets on

This is closer to a location or goal phrase than to a direct object.

Because Hindi normally does not use articles the way English does.

So यात्री can mean:

• a passenger
• the passenger

and ट्रेन can mean:

• a train
• the train

The exact English article depends on context. Hindi usually leaves that unstated.

Yes, Hindi word order is somewhat flexible, but the neutral, most common order is the one you see here:

• यात्री ट्रेन में चढ़ता है।

You may sometimes hear other orders for emphasis, contrast, or style, but for learners, this version is the best default pattern to remember:

• Subject + place phrase + verb

You change the verb ending:

• Female singular: यात्री ट्रेन में चढ़ती है।
• Masculine plural / mixed group / respectful singular: यात्री ट्रेन में चढ़ते हैं।

So the important thing to watch is the agreement in the verb phrase, especially -ता / -ती / -ते and है / हैं.