शाम को मैं हिंदी पढ़ूँगी।

शाम means evening. In this sentence, शाम को means in the evening or sometimes this evening, depending on context.

The postposition को is often used with expressions of time in Hindi. With parts of the day, it is very common to say things like:

• सुबह को = in the morning
• शाम को = in the evening
• रात को = at night

So here, को is marking the time when the action happens.

Yes. मैं शाम को हिंदी पढ़ूँगी is also correct.

Hindi word order is fairly flexible, although the most neutral pattern is often time + subject + object + verb or subject + time + object + verb. So both of these are natural:

• शाम को मैं हिंदी पढ़ूँगी।
• मैं शाम को हिंदी पढ़ूँगी।

Putting शाम को first gives a little more focus to the time.

Hindi usually does not use a separate word for will the way English does. Instead, the future meaning is built into the verb form itself.

Here, पढ़ूँगी already means will study / will read for a female speaker. So the future is expressed by the verb ending, not by a separate word.

Because पढ़ूँगी is the form used when the speaker is female.

• मैं हिंदी पढ़ूँगी = I will study Hindi. (said by a woman/girl)
• मैं हिंदी पढ़ूँगा = I will study Hindi. (said by a man/boy)

In Hindi, future verb forms often show the gender of the speaker in the first person singular.

It comes from the verb पढ़ना, which means to read or to study.

For I will study/read with a female speaker, Hindi uses the future form पढ़ूँगी.

A useful comparison is:

• पढ़ना = to study / to read
• मैं पढ़ूँगा = I will study/read (male speaker)
• मैं पढ़ूँगी = I will study/read (female speaker)

So -ूँगी is the future ending here for first-person singular feminine.

It can mean either, depending on context.

With the name of a language, पढ़ना often means to study/learn that language:

• मैं हिंदी पढ़ती हूँ = I study Hindi.

But पढ़ना can also literally mean to read:

• मैं हिंदी में किताब पढ़ती हूँ = I read a book in Hindi.

So in your sentence, the most likely meaning is I will study Hindi in the evening, but I will read Hindi in the evening is also possible in the right context.

Yes, very often.

Hindi commonly drops subject pronouns when the meaning is already clear from the context or the verb form. So:

• शाम को मैं हिंदी पढ़ूँगी।
• शाम को हिंदी पढ़ूँगी।

Both can work.

Because पढ़ूँगी already tells you the speaker is I and female, the pronoun मैं is not always necessary.

Because here हिंदी is the direct object, and in Hindi direct objects are often left unmarked, especially when they are inanimate or general.

So:

• मैं हिंदी पढ़ूँगी = I will study Hindi.

Adding को here would usually sound unnatural. हिंदी is just the thing being studied, so no extra marker is needed.

Usually, शाम को is the more natural and idiomatic choice for in the evening.

Hindi often uses को with times of day, so शाम को is what learners should prefer.

शाम में may be understood, but it is less standard in this kind of sentence. If you want the most natural everyday phrasing, use शाम को.

A helpful transliteration is paṛhū̃gī.

A rough English-friendly pronunciation is:

puh-rhoon-gee, with a nasal sound on the oo part.

A few details:

• ढ़ is a Hindi sound that does not exist exactly in English.
• ूँ shows a long oo sound with nasalization.
• गी sounds like gee.

So the word is not just pa-dhoon-gee; the middle sound is more specifically Hindi in pronunciation.

Yes. Hindi normally puts the verb at the end, so this sentence follows a very typical pattern:

time + subject + object + verb

• शाम को = time
• मैं = subject
• हिंदी = object
• पढ़ूँगी = verb

That final-verb pattern is one of the most important word-order habits to get used to in Hindi.