हम पार्क में चलेंगे।

A simple pronunciation guide is:

ham pārk meṅ chaleṅge

A rough English-friendly version could be:

hum park mein chuh-LENG-gay

A few notes:

• हम = ham, not exactly English hum, but close.
• पार्क is a borrowing from English park, usually pronounced pretty similarly.
• में is often written mein in learner-style transliteration; the vowel is nasalized.
• चलेंगे has a -enge sound at the end: cha-len-ge.

Here is the breakdown:

• हम = we
• पार्क = park
• में = in
• चलेंगे = will walk / will go around / will move

So the structure is basically:

we + park + in + will walk

Because Hindi uses postpositions, not prepositions.

In English, words like in, on, and at usually come before the noun:

• in the park

In Hindi, the equivalent word comes after the noun:

• पार्क में = park in

So में means in, but it comes after पार्क.

Hindi normally prefers Subject–Object/Complement–Verb word order, while English usually uses Subject–Verb–Object.

So English says:

• We will walk in the park.

Hindi says:

• We park in will-walk.

That is why चलेंगे comes at the end. This is one of the most common patterns in Hindi.

चलेंगे is a future-tense form of चलना, which means to walk, to move, or sometimes to go depending on context.

So चलेंगे means:

• will walk
• will go
• will move

In this sentence, it is the future form used with हम.

The ending -ेंगे in चलेंगे shows a future form that agrees with हम in a masculine plural / mixed-gender plural way.

So:

• हम चलेंगे = we will walk (male speaker, all-male group, or mixed group)

If the group were entirely female, you would usually say:

• हम चलेंगी

This is because Hindi verbs often agree with the gender and number of the subject.

It can mean more than just walk.

The verb चलना has a wider range than English to walk. Depending on context, it can mean:

• to walk
• to move
• to proceed
• sometimes even to go

In this sentence, with पार्क में, it most naturally suggests:

• we will walk in the park or
• we will go for a walk in the park

If you specifically wanted to say we will go to the park, Hindi would more naturally use जाएँगे:

• हम पार्क जाएँगे

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

So पार्क can mean:

• a park
• the park

The exact meaning depends on context.

That means हम पार्क में चलेंगे could be understood as:

• We will walk in the park or
• We will walk in a park

Usually the situation makes it clear.

In normal modern Hindi, हम usually means we.

Unlike English, Hindi does not normally use हम for singular I in everyday standard speech.

So in this sentence, हम should be understood as plural:

• we

You may occasionally encounter special or regional uses, but for a learner, हम = we is the right rule here.

Yes, it can sound natural, especially if you mean we will walk in the park.

But Hindi speakers might choose slightly different verbs depending on the exact nuance:

• हम पार्क में चलेंगे = We will walk in the park
• हम पार्क में घूमेंगे = We will stroll / wander around in the park
• हम पार्क जाएँगे = We will go to the park

So your sentence is fine if the idea is specifically walking in the park.