Studio in biblioteca da settembre.

Studio is the 1st person singular present tense of studiare: I study.

In Italian, the simple present often covers meanings that English expresses with both:

• I study
• I am studying
• and, with a phrase like da settembre, even I have been studying

So in this sentence, studio in biblioteca da settembre can naturally mean:

• I study in the library
• I’ve been studying in the library since September

Italian does not need a separate tense like English have been studying here.

Italian usually drops the subject pronoun when it is clear from the verb ending.

• studio already means I study
• so io is unnecessary unless you want emphasis or contrast

For example:

• Studio in biblioteca da settembre. = neutral
• Io studio in biblioteca da settembre. = emphasizes I

A learner might add io because English requires I, but Italian often leaves it out.

In Italian, in biblioteca is the normal way to say in/at the library when you mean the place where the activity happens.

So:

• studio in biblioteca = I study at the library / in the library

Using alla biblioteca is usually less natural for this meaning. A is more common with some places, but with biblioteca, in is the standard choice when you mean being there as a location.

In biblioteca is a very common idiomatic expression in Italian. It often means at the library in a general sense, without focusing on a specific library as an identified object.

Compare:

• Studio in biblioteca. = I study at the library / in the library
• Studio nella biblioteca dell’università. = I study in the university library

So the version without an article sounds more general and natural here.

Da settembre means since September or from September, depending on context.

In this sentence, because the verb is in the present tense, it normally means:

• since September
• the action started in September and is still true now

So:

• Studio in biblioteca da settembre. = I’ve been studying in the library since September.

This is a very common pattern in Italian:

• da + point in time = since
• da due mesi = for two months
• da ieri = since yesterday

Because Italian expresses this idea differently from English.

English often uses the present perfect continuous:

• I have been studying in the library since September

Italian usually uses the simple present with da:

• Studio in biblioteca da settembre

This is one of the most important differences for English speakers to learn:

• English: have been doing
• Italian: present tense + da

So even though studio looks like I study, the full sentence can mean I have been studying.

Usually, studio in biblioteca da settembre is the more natural choice.

Sto studiando emphasizes an action in progress right now, like I am studying. With da settembre, Italian normally prefers the simple present to express an action that began in the past and continues now.

So:

• Studio in biblioteca da settembre. = natural
• Sto studiando in biblioteca da settembre. = possible in some contexts, but less standard for this general ongoing meaning

A good rule is:

• ongoing since a past point → present tense + da

In Italian, months usually do not take an article when used in expressions of time like this.

So you say:

• da settembre = since September
• a ottobre = in October / by October
• a gennaio = in January

This is normal Italian.

You might see an article in other structures, but here da settembre is the standard form.

Normally, no.

In Italian, the names of months are usually written in lowercase:

• gennaio
• febbraio
• settembre

So settembre is correct here.

This differs from English, where September must be capitalized.

Yes. Italian word order is flexible, although the original sentence is perfectly natural.

You could also say:

• Da settembre studio in biblioteca.

This puts more emphasis on since September.

The original:

• Studio in biblioteca da settembre.

is neutral and very common.

Not really in this sentence.

Italian studio can be:

• a verb form: I study
• a noun: study, office, studio

But in Studio in biblioteca da settembre, the context clearly shows it is the verb, because it is followed by a place expression and a time expression.

So a native speaker would understand it as I study / I’ve been studying, not as the noun.

You could say:

• Studio in biblioteca dallo scorso settembre.

Here:

• da + lo = dallo
• scorso settembre = last September

This is useful if you want to make the time reference clearer.

For example:

• Studio in biblioteca da settembre. = since September
• Studio in biblioteca dallo scorso settembre. = since last September

It can correspond to both in English.

Italian in biblioteca focuses on the location, and English may translate it as either:

• in the library
• at the library

Which one sounds best depends on the English context, but the Italian phrase itself is perfectly normal for both ideas.