मैं लगभग तैयार हूँ।

A simple breakdown is:

• मैं = I
• लगभग = almost / approximately
• तैयार = ready / prepared
• हूँ = am

So the literal structure is roughly:

• I + almost + ready + am

That may feel backwards compared with English, but it is normal in Hindi for the verb होना (to be) to come at the end.

In Hindi, the main verb often comes at or near the end of the sentence. That includes forms of होना (to be).

So:

• मैं तैयार हूँ = I am ready
• literally: I ready am

This is one of the most important word-order differences from English. English usually puts am/is/are before the adjective, but Hindi usually puts the adjective first and the to be verb last.

Yes, often you can.

Hindi frequently drops the subject when it is already clear from context. Since हूँ specifically marks first person singular (I am), the sentence:

• लगभग तैयार हूँ।

can still mean I’m almost ready.

However:

• मैं लगभग तैयार हूँ sounds complete and clear on its own.
• लगभग तैयार हूँ is common in conversation when the subject is obvious.

So both are natural; the version with मैं is just more explicit.

Here, लगभग means almost or nearly.

It can also mean approximately in other contexts, especially with numbers:

• लगभग दस मिनट = about ten minutes
• लगभग सौ लोग = about a hundred people

In मैं लगभग तैयार हूँ, it clearly means:

• not fully ready yet, but very close

So the same word can mean either almost or approximately, depending on context.

Because it is describing the state of being ready.

Hindi usually places words like लगभग before the word or idea they modify. So:

• मैं लगभग तैयार हूँ = I am almost ready

This is the most natural order.

Other orders may sound awkward or change the emphasis. For a learner, the safest pattern is:

• subject + लगभग + adjective/state + हूँ/है/हैं

No, तैयार usually does not change for gender or number.

So you say:

• मैं तैयार हूँ = I am ready
  (said by a man or a woman)
• वह तैयार है = He/She is ready
• वे तैयार हैं = They are ready

This is different from adjectives like अच्छा, which do change:

• अच्छा लड़का
• अच्छी लड़की

But तैयार stays the same. That makes it a bit easier to use.

Because हूँ matches मैं.

These are different present-tense forms of होना:

• मैं ... हूँ = I am
• तुम ... ho = you are
• वह ... है = he/she/it is
• हम/वे ... हैं = we/they are

So:

• मैं लगभग तैयार हूँ = correct
• मैं लगभग तैयार है = incorrect

A very useful pattern to memorize is:

• मैं ... हूँ

The difference is mainly state vs process:

• मैं तैयार हूँ = I am ready
  This describes a state.
• मैं तैयार हो रहा हूँ = I am getting ready
  This describes an ongoing process.

So:

• मैं लगभग तैयार हूँ = I’m almost ready
• मैं अभी तैयार हो रहा हूँ = I’m getting ready right now

In real life, if you want to tell someone you are close to being done, मैं लगभग तैयार हूँ is very natural.

Also note:

• रहा हूँ is generally used by a male speaker.
• A female speaker would say रही हूँ:
  • मैं तैयार हो रही हूँ

A rough pronunciation guide is:

• मैं ≈ maĩ
  The vowel is nasalized. English speakers often say something like main, but the real sound is more nasal.
• लगभग ≈ lug-bhug
  Both parts are short and quick.
• तैयार ≈ tai-yaar
• हूँ ≈ hoõ
  Again, the vowel is nasalized.

Two important pronunciation notes:

1. ँ / nasalization matters in मैं and हूँ.
2. The final हूँ should not sound exactly like plain English who; it has a nasal quality.

A workable learner pronunciation would be:

• maĩ lug-bhug tai-yaar hoõ

Yes. मैं लगभग तैयार हूँ is a natural, normal, neutral sentence.

It works in everyday situations such as:

• when you are dressing
• when you are finishing work
• when you are nearly done getting ready to leave

Depending on tone and context, speakers might also say similar things such as:

• मैं बस तैयार हूँ in some conversational contexts
• मैं लगभग तैयार हो गया हूँ / हो गई हूँ if they want to stress completion a bit differently

But मैं लगभग तैयार हूँ is a very solid standard sentence for I’m almost ready.