uti mo tosyokan de nihongo wo benkyousite imasu.

Here, うち means I.

This can confuse learners because うち also commonly means home, inside, or our place in other contexts. In this sentence, though, it is being used as a first-person pronoun.

A few nuance points:

• It is more casual than 私
• It is often associated with women’s speech
• It is also common in Kansai dialect
• In standard textbook Japanese, you will more often see 私も図書館で日本語を勉強しています

So the sentence is understandable, but うち gives it a more personal or casual flavor.

も means also or too.

So:

• うちは = as for me
• うちも = I also / me too

This means the speaker is probably responding to someone else. For example:

• A: 図書館で日本語を勉強しています。
• B: うちも図書館で日本語を勉強しています。

So B is saying, I do too or I also study Japanese at the library.

で marks the place where an action happens.

Since studying is an action, 図書館で means at the library or in the library as the place where the studying happens.

Compare:

• 図書館で勉強する = study at the library
• 図書館に行く = go to the library

So:

• で = where the action occurs
• に = destination, time, or existence in other cases

Not in this sentence.

Because 勉強する is an action happening in a location, Japanese uses で, not に.

Correct:

• 図書館で日本語を勉強しています。

Incorrect for this meaning:

• 図書館に日本語を勉強しています。

You could use に with a different verb, such as:

• 図書館に行きます。 = I go to the library.
• 図書館にいます。 = I am at the library.

So the particle depends on the verb and meaning.

を marks the direct object of the verb.

Here, the verb is 勉強しています and the thing being studied is 日本語. So:

• 日本語を勉強しています = am studying Japanese

That is the most straightforward structure.

You may also hear:

• 日本語の勉強をしています

This is also natural, and it means almost the same thing. It is more literally like doing the study of Japanese.

勉強しています is the ている form of 勉強する.

Basic breakdown:

• 勉強する = to study
• 勉強している = be studying / study
• 勉強しています = polite form of 勉強している

In this sentence, 勉強しています can mean either:

1. I am studying Japanese at the library
   
   • talking about what is happening now

or

2. I study Japanese at the library
   
   • talking about a repeated habit or ongoing activity

Japanese 〜ています often covers both the progressive meaning and the habitual meaning, so context decides which one is intended.

Both are possible, but they mean slightly different things.

• 勉強します often sounds like a simple present/future statement:
  I study / I will study
• 勉強しています often emphasizes an ongoing state or regular activity:
  I am studying / I study regularly

So:

• 図書館で日本語を勉強します
  can sound like a general statement or future plan

• 図書館で日本語を勉強しています
  often sounds more like I’m currently engaged in studying Japanese or I’ve been studying Japanese

Japanese word order is more flexible than English, but the verb usually comes at the end.

This sentence is:

• うちも = I also
• 図書館で = at the library
• 日本語を = Japanese
• 勉強しています = am studying

A natural standard order is exactly that. But some parts can move for emphasis, for example:

• うちも日本語を図書館で勉強しています。
• 図書館でうちも日本語を勉強しています。

These are grammatically possible, though some may sound less neutral depending on context.

The safest pattern for learners is:

[topic/subject] + [place] + [object] + [verb]

Yes, Japanese often omits the subject when it is obvious.

So a very natural sentence would simply be:

• 図書館で日本語を勉強しています。

That can already mean I am studying Japanese at the library, if the context makes it clear.

The speaker includes うちも here because they want to say I also. The also/too meaning is important, so the subject is expressed.

Yes, it is grammatical and understandable, but the naturalness depends on who is speaking.

The main point is うち:

• If the speaker is someone who naturally uses うち for I, the sentence is fine.
• If you are aiming for neutral textbook Japanese, 私も図書館で日本語を勉強しています。 is safer.

So the sentence is natural in the right voice, but うち is not the default first-person pronoun for every speaker.

Often, yes.

In many situations, うち used as I can sound:

• feminine
• youthful
• casual
• regional, especially associated with Kansai

That does not mean only women can use it, and usage differs by region and person. But for most learners, it is best to know that うち is not as neutral as 私.

If you want a safe all-purpose version, use:

• 私も図書館で日本語を勉強しています。

Japanese does not use articles like English a, an, and the.

So 図書館 can mean:

• a library
• the library
• libraries

The exact meaning depends on context.

In this sentence, English might translate it as at the library, but Japanese does not need a separate word for the.

Yes. In English, at the library and in the library are both possible translations depending on context.

Japanese 図書館で simply marks the library as the location of the studying action. English chooses at or in based on what sounds most natural.

So both of these can work:

• I also study Japanese at the library.
• I’m also studying Japanese in the library.

The Japanese grammar itself does not force that exact English preposition choice.