मैं आग से बच गई।

Because the verb here is बचना / बच जाना, which is intransitive: the subject is the one who escapes or survives, and there is no direct object being acted on.

In standard Hindi, ने is typically used with many perfective transitive verbs, but not with a sentence like this one.

So:

• मैं आग से बच गई। = I escaped the fire / I was saved from the fire.
• Not मैंने आग से बच गई।

Here से means from.

With the verb बचना (to escape, to be saved from, to avoid), Hindi usually marks the danger or source with से:

• आग से = from the fire
• खतरे se = from danger
• मुसीबत से = from trouble

So आग से बच गई literally means escaped from the fire or was saved from the fire.

बच गई is a very common Hindi way to say escaped, survived, or was saved.

It is built from:

• बच- from बचना = to escape / survive / be saved
• गई from जाना, used here as part of a compound verb

This compound often adds a sense of:

• successful completion
• ending up in a safe state
• managing to get through something

So मैं आग से बच गई has the feeling of:

• I escaped the fire
• I survived the fire
• I managed to get away from the fire safely

Because the speaker is female.

In this kind of sentence, the verb agrees with the subject. So if a woman is speaking, you get:

• मैं आग से बच गई।

If a man is speaking, it becomes:

• मैं आग से बच गया।

Other common forms:

• हम आग से बच गए। = We escaped the fire.
• वे आग से बच गए। = They escaped the fire.

So गई tells you the speaker is feminine singular.

Yes, that is grammatical.

• मैं आग से बची uses the simple perfective form of बचना
• मैं आग से बच गई uses a compound verb and is often more natural in everyday Hindi

The version with गई is very common because it emphasizes the completed result: the person ended up safe.

Very roughly:

• बची = escaped / survived
• बच गई = managed to escape / ended up surviving

In many contexts, both are understandable, but बच गई is especially common in speech.

Hindi usually does not need a separate word for myself in this kind of sentence.

In English, you might think of:

• I saved myself from the fire
• I escaped the fire

But in Hindi, मैं आग से बच गई already naturally means that I was the one who got away safely.

If you want extra emphasis, you can add खुद:

• मैं खुद आग से बच गई। = I myself escaped the fire.

But normally, खुद is not necessary.

The usual Hindi order is:

subject + other information + verb

So:

• मैं = subject
• आग से = from the fire
• बच गई = escaped / was saved

That makes मैं आग से बच गई a very normal sentence.

A few things to notice:

• Hindi usually puts the verb at the end.
• Postpositions like से come after the noun, not before it.
• So Hindi says आग से where English says from the fire.

You can move parts around for emphasis in some contexts, but this version is the neutral, natural order.

Yes, it refers to a completed event, so it is usually understood as past.

More specifically, it is a perfective form: the escaping is seen as completed.

Depending on context, you could translate it as:

• I escaped the fire.
• I was saved from the fire.
• I survived the fire.
• I managed to get away from the fire.

So the main idea is not just that the speaker was in danger, but that the danger is over and the speaker came out safe.

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

So आग can mean:

• fire
• a fire
• the fire

The exact English translation depends on context.

In this sentence, if both speaker and listener know which fire is meant, English will usually say:

• the fire

But Hindi simply says आग.

A simple learner-friendly pronunciation is:

main aag se bach ga-ee

A few points:

• मैं sounds roughly like main, but with nasalization
• आग has a long aa sound: aag
• बच sounds like bach
• गई is usually pronounced close to ga-ee

So the whole sentence sounds approximately like:

main aag se bach ga-ee

If you want to sound more natural, pay special attention to the nasal sound in मैं and the long vowel in आग.