वह लड़की दुकान में काम करती है; वह आदमी सड़क पर नहीं है।

In this sentence, वह is followed by a noun both times: वह लड़की and वह आदमी. That means it is acting like that:

• वह लड़की = that girl
• वह आदमी = that man

When वह stands alone, it can mean he, she, or that, depending on context.

Hindi does not have articles like a, an, and the.
So a noun like लड़की can mean a girl, the girl, or just girl, depending on context.

Here, वह adds a sense of that, but in English the most natural translation may sometimes still use the if the context already makes the person specific.

Hindi very often uses the expression काम करना, which literally means to do work, but naturally means to work.

So:

• काम = work
• करती = does
• है = is

Together, काम करती है means works or does work.

This kind of noun + करना structure is very common in Hindi.

Because the subject is लड़की, which is feminine.

In this kind of present habitual sentence, the verb agrees with the subject in gender and number:

• वह लड़का काम करता है = that boy works
• वह लड़की काम करती है = that girl works

So करती is the feminine singular form.

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

• करता / करती / करते
  • है / हैं

So:

• करती है = does / works

The है is an auxiliary verb and is normally part of the full sentence. Without it, the sentence would sound incomplete in standard written Hindi, although in casual speech people sometimes drop it.

They are postpositions:

• में = in
• पर = on, at

So:

• दुकान में = in the shop
• सड़क पर = on the road / on the street

These are very common location words in Hindi.

Because Hindi uses postpositions, not prepositions.

English says:

• in the shop
• on the road

Hindi says:

• दुकान में
• सड़क पर

So the location word comes after the noun.

In simple negative sentences, नहीं usually comes before the main verb or before the final auxiliary.

So:

• वह आदमी सड़क पर नहीं है = that man is not on the road

This is the normal placement.

You can also compare:

• वह काम नहीं करती है = she does not work

Hindi uses forms of होना for existence, identity, and location.

So:

• वह आदमी सड़क पर है = that man is on the road
• वह आदमी सड़क पर नहीं है = that man is not on the road

Hindi does not need a separate verb like to be located here. है does that job.

Yes. Hindi usually puts the verb near the end.

A rough literal order is:

• वह लड़की दुकान में काम करती है
  that girl shop in work does is

• वह आदमी सड़क पर नहीं है
  that man road on not is

So compared with English, Hindi often follows a subject + other information + verb pattern.

A learner will often notice two things:

1. वह is often pronounced more like वो in everyday speech.
   So वह लड़की is very often said as वो लड़की.

2. In सड़क, the letter ड़ is a special sound, not a plain English d.
   It is a quick flapped sound made with the tongue curled slightly back. There is no perfect English equivalent, so it usually takes practice to hear and say it well.