امروز تا شب در اداره هستم.

In Persian, the verb often already shows the subject, so the pronoun can be omitted.

Here, هستم means I am, so من (I) is not necessary.

• (من) امروز تا شب در اداره هستم.
• Today, until night, I am at the office.

If you add من, it is still correct, but it may sound more emphatic:

• من امروز تا شب در اداره هستم.
• I am at the office until tonight.

تا means until / up to, and شب means night / evening.

So تا شب means until evening or until tonight, depending on context.

In this sentence, it tells you how long the speaker will remain at the office.

Examples:

• تا فردا = until tomorrow
• تا صبح = until morning
• تا شب = until evening / until tonight

Good question. شب means night/evening in a general sense, while امشب means tonight specifically.

In this sentence, امروز تا شب already sets the time frame clearly: today until evening/night. So شب is enough.

Compare:

• امروز تا شب در اداره هستم. = I’m at the office until tonight.
• امشب در اداره هستم. = I’m at the office tonight.

The first focuses on the span of time from now/today up to evening. The second simply says that tonight you are at the office.

در is a preposition meaning in / at.

• اداره = office, workplace, government office, bureau
• در اداره = in the office / at the office

So در اداره هستم means I am at the office.

In everyday spoken Persian, people often use تو instead of در:

• تو اداره هستم or more naturally in speech:
• تو اداره‌ام

Both are understandable, but در اداره هستم sounds more standard and written.

Not always exactly.

اداره often means:

• an office
• a workplace
• an administrative office
• sometimes a government department or bureau

Depending on context, it may sound a bit more institutional than English office.

For a personal work office, Persian speakers may also use:

• دفتر = office, desk, workplace office
• محل کار = workplace

But in this sentence, اداره is completely natural and common.

Persian usually puts the verb at the end of the sentence.

So the structure here is roughly:

• امروز = today
• تا شب = until evening
• در اداره = at the office
• هستم = I am

This is very normal Persian word order.

A literal breakdown would be something like:

• Today until evening at the office am.

That sounds strange in English, but it is standard in Persian.

Yes, Persian word order is somewhat flexible, especially for emphasis, but the verb usually stays at the end.

For example:

• امروز تا شب در اداره هستم.
• در اداره امروز تا شب هستم.
• امروز در اداره تا شب هستم.

These are all understandable, but the first one is the most neutral and natural.

Learners should usually stick with:

• time expressions first,
• then place,
• then the verb at the end.

Because this sentence describes location, not necessarily the action of working.

هستم means I am, so در اداره هستم means I am at the office.

It tells us where the speaker is, or where they will remain for that period.

If you wanted to say I work at the office until tonight, that would be a different idea and might use a verb like کار می‌کنم:

• امروز تا شب در اداره کار می‌کنم.
• Today I work at the office until tonight.

But در اداره هستم is more like:

• I’m at the office
• I’ll be at the office

Formally, هستم is present tense: I am.

But in Persian, just like in English, the present tense can sometimes refer to a near-future situation depending on context.

So this sentence can mean:

• I am at the office until tonight. or
• I’ll be at the office until tonight.

The exact meaning depends on the situation.

For example:

• If someone calls you now, it may mean I’m currently at the office and will remain here until tonight.
• If you are talking about your plan for today, it can sound like I’ll be at the office until tonight.

In casual speech, people often shorten it.

A more conversational version might be:

• امروز تا شب اداره‌ام.
• امروز تا شب تو اداره‌ام.

Here, اداره‌ام is a spoken contraction of:

• در اداره هستم

This kind of shortening is very common in speech.

So:

• در اداره هستم = more full, standard, clear
• اداره‌ام / تو اداره‌ام = more conversational

A simple pronunciation guide is:

emruz tâ shab dar edâre hastam

More roughly for an English speaker:

• em-rooz
• taa shab
• dar e-daa-re
• has-tam

A few notes:

• امروز = emruz
• تا has a long â sound
• اداره is pronounced edâre
• هستم = hastam

Yes. That is very natural.

در اداره‌ام is a shortened form of در اداره هستم in everyday Persian.

So these are basically equivalent:

• امروز تا شب در اداره هستم.
• امروز تا شب در اداره‌ام.

The shorter version is very common in speech and informal writing.

It can mean both, depending on context.

Most commonly:

• امروز = today

But in some contexts it can also mean:

• nowadays
• these days

In this sentence, because of تا شب, it clearly means today, not nowadays.

So:

• امروز تا شب = today until evening

That removes any ambiguity.