मैं शाम तक यहाँ रहूँगी।

रहूँगी is the future tense form of the verb रहना (to stay / to remain / to live).

• रहना = the dictionary form, to stay
• हूँ = am, used for the present tense
• रहूँगी = I will stay or I will remain

So in मैं शाम तक यहाँ रहूँगी, the speaker is talking about what she will do later, not what she is doing right now.

The ending -गी shows that the speaker is:

1. first person singular: I
2. future tense
3. feminine

So रहूँगी means I will stay when said by a woman or girl.

If a male speaker said the same sentence, it would usually be:

मैं शाम तक यहाँ रहूँगा।

So:

• रहूँगा = I will stay (masculine speaker)
• रहूँगी = I will stay (feminine speaker)

तक means until, up to, or sometimes by, depending on context.

In this sentence:

• शाम तक = until evening / till evening

So the whole sentence means the speaker will remain here up to that time.

A useful pattern is:

• सुबह तक = until morning
• कल तक = until tomorrow / by tomorrow
• यहाँ तक = up to here

It most naturally means until evening here, because the verb रहूँगी describes continuing to stay somewhere.

So the idea is:

I will stay here until evening.

In other contexts, X तक can also be understood more like by X, especially when talking about completion deadlines:

• मैं कल तक काम करूँगा। = I will do the work by tomorrow.

But in your sentence, until evening is the most natural reading.

यहाँ means here.

Hindi word order is flexible, but the most neutral order is often:

subject + time expression + place + verb

So:

• मैं = I
• शाम तक = until evening
• यहाँ = here
• रहूँगी = will stay

That gives:

मैं शाम तक यहाँ रहूँगी।

You may also hear slight variations for emphasis, such as:

मैं यहाँ शाम तक रहूँगी।

That still means the same thing, but the focus may shift a little.

Yes, often you can.

Hindi frequently drops pronouns when the meaning is already clear from context or from the verb ending.

So both of these can work:

• मैं शाम तक यहाँ रहूँगी।
• शाम तक यहाँ रहूँगी।

Because रहूँगी already tells you the speaker is I and feminine, the pronoun is not always necessary.

Still, including मैं is perfectly natural, especially if you want to be clear or emphasize I.

Hindi normally places the main verb at the end of the sentence.

English usually follows Subject-Verb-Object/Complement order:

• I will stay here until evening.

Hindi usually follows Subject-Object/Complement-Verb order:

• मैं शाम तक यहाँ रहूँगी।

This verb-final pattern is one of the most important differences between Hindi and English.

It can mean both, depending on context.

रहना can mean:

• to stay
• to remain
• to live

For example:

• मैं यहाँ रहूँगी। = I will stay here. / I will live here.
  Context decides which meaning is intended.

In your sentence, because of शाम तक (until evening), the meaning is clearly stay, not live.

A rough pronunciation guide is:

ra-HOON-gee

A few details:

• र = a light r
• हूँ has a long vowel and nasalization
• गी sounds like gee

The nasal sign in हूँ gives a nasal sound, something like hoon with the sound resonating through the nose.

So the whole word sounds roughly like:

rahoongi

This is only an approximation using English spelling, but it is a useful starting point.

They refer to different times and slightly different ideas:

• मैं यहाँ हूँ। = I am here.
  This is present tense. It says where you are now.

• मैं यहाँ रहूँगी। = I will stay here. / I will be staying here.
  This is future tense. It talks about remaining here in the future.

So हूँ describes a current state, while रहूँगी describes future staying or remaining.

Usually, no—not if you mean I will stay here until evening.

होऊँगी comes from होना (to be) and usually means I will be.

• मैं वहाँ होऊँगी। = I will be there.
• मैं यहाँ रहूँगी। = I will stay here.

If your idea is about remaining/staying, रहूँगी is the better choice.
If your idea is simply about being present, होऊँगी may work in other contexts, but it is not the natural choice for this sentence.

It is neutral and standard. It works in both everyday speech and polite conversation.

There is nothing especially formal or especially casual about it. It is a normal, natural Hindi sentence.

If needed, politeness in Hindi usually shows more through:

• pronouns like आप, तुम, तू
• tone
• surrounding expressions

This sentence itself is straightforward and neutral.