मैं आईने के सामने कंघी करती हूँ।

A helpful breakdown is:

मैं = I
आईने = mirror in its oblique form
के सामने = in front of
कंघी = combing / a comb
करती हूँ = do / am doing with a feminine speaker

So the structure is basically:

I + mirror-in-front-of + combing do

That is how Hindi often builds sentences: the verb phrase comes at the end.

Because आईना changes to आईने before a postposition.

In Hindi, many nouns have an oblique form when they come before words like में, पर, के सामने, के पास, etc.

Here:

आईना = mirror
आईने = mirror-oblique

So:

आईना → basic form
आईने के सामने = in front of the mirror

This is a very common pattern with masculine singular nouns ending in -ा:

• लड़का → लड़के
• कमरा → कमरे
• आईना → आईने

के सामने means in front of.

It works like a fixed postpositional expression in Hindi:

• घर के सामने = in front of the house
• स्कूल के सामने = in front of the school
• आईने के सामने = in front of the mirror

The के here is part of the normal pattern used with सामने after a noun. It is not the same as saying of in a literal English sense; learners usually do best by memorizing X के सामने as a unit meaning in front of X.

Because Hindi very often expresses actions with a noun + करना pattern.

Here:

• कंघी can refer to a comb or the act of combing
• करना means to do

So कंघी करना literally looks like to do combing, but in natural English it means to comb one’s hair.

This pattern is extremely common in Hindi. For example:

• बात करना = to talk
• सफाई करना = to clean
• तैयारी करना = to prepare

So कंघी करती हूँ is completely normal Hindi.

It is best understood as a noun used inside a verbal expression.

By itself, कंघी usually means comb. But in कंघी करना, it becomes part of the set phrase meaning to comb hair.

So in this sentence:

• कंघी is not the fully inflected verb
• करती हूँ carries the verbal grammar
• together they mean I comb my hair

करती हूँ is used when the speaker is female.

In this pattern, the participle changes for gender:

• करती हूँ = I do / I comb (female speaker)
• करता हूँ = I do / I comb (male speaker)

So a male speaker would say:

मैं आईने के सामने कंघी करता हूँ।

The हूँ part stays the same because the subject is still I.

Hindi often leaves out things that are obvious from context.

With कंघी करना, it is usually understood that you mean combing your hair, so बाल does not have to be stated.

That is why:

मैं आईने के सामने कंघी करती हूँ।

can naturally mean:

I comb my hair in front of the mirror.

If you want to make hair explicit, you can say something like:

मैं आईने के सामने अपने बालों में कंघी करती हूँ।

But the shorter version is very natural.

Usually it means I comb my hair in a general or habitual sense.

The form करती हूँ is often used for:

• habits
• routines
• regular actions

So this sentence is most naturally understood as:

• I comb my hair in front of the mirror
• I usually comb my hair in front of the mirror

If you want to say the action is happening right now, Hindi more commonly uses:

मैं आईने के सामने कंघी कर रही हूँ।

That means: I am combing my hair in front of the mirror.

Because this sentence is in the present habitual, not a perfective past construction.

In Hindi, ने often appears with subjects in many perfective sentences, such as: मैंने खाना खाया। = I ate food.

But in a sentence like: मैं आईने के सामने कंघी करती हूँ।

the subject is just मैं, not मैंने.

So this is normal:

• मैं ... करती हूँ
• not मैंने ... करती हूँ

Yes, this is normal Hindi word order.

Hindi usually prefers: Subject + other information + verb

So here you get:

• मैं = subject
• आईने के सामने = location
• कंघी करती हूँ = action

That is why the verb comes at the end.

A very literal layout is: I + in front of the mirror + comb

This is one of the biggest differences from English, where the verb usually comes earlier.

It is completely normal everyday Hindi.

Nothing in this sentence is unusually formal or poetic. A speaker would naturally say: मैं आईने के सामने कंघी करती हूँ।

The vocabulary is straightforward:

• मैं = I
• आईना = mirror
• सामने = in front
• कंघी करना = to comb hair

So this is a good practical sentence to learn from because it shows several very common Hindi patterns at once.