Я виходжу з ліфта і йду до офісу.

Because з in the sense of out of/from requires the genitive case in Ukrainian.

• ліфт = the dictionary form, nominative
• з ліфта = out of the elevator / from the elevator, genitive singular

So the noun changes form after the preposition:

• ліфт
• з ліфта

You may also see із or зі instead of з. They mean the same thing and are chosen mostly for ease of pronunciation.

Both can be possible, but they are not exactly the same.

• до офісу = to the office, focusing on the destination
• в офіс = into the office, focusing more on entering it

In this sentence, йду до офісу sounds like I’m walking to the office. If you said йду в офіс, it would suggest going into the office building/room.

So до is often a very natural choice when talking about movement toward a place.

Because Ukrainian uses cases, and prepositions often require a specific case.

Here:

• з takes the genitive
• до also takes the genitive

So:

• ліфт → ліфта
• офіс → офісу

Both nouns are masculine singular, but their genitive endings are slightly different:

• many masculine nouns take -а / -я
• many others take -у / -ю

Unfortunately, this is something you often learn noun by noun, though there are patterns.

Ukrainian present tense covers both:

• simple present
• present continuous

So Я виходжу з ліфта і йду до офісу can mean:

• I get out of the elevator and go to the office (general/habitual reading)
• I am getting out of the elevator and walking to the office (right now, from context)

Unlike English, Ukrainian does not need a special continuous form like am walking.

This is a very common motion-verb question.

• йти / йду = going in one direction, at this moment or on one trip
• ходити / ходжу = going habitually, repeatedly, or in different directions

So here йду is correct because the speaker is moving in a specific direction: from the elevator to the office.

Compare:

• Я йду до офісу. = I am going / walking to the office.
• Я ходжу до офісу щодня. = I go to the office every day.

This is about aspect.

• виходжу, йду = imperfective
• вийду, піду = perfective

In practice:

• виходжу / йду describe the action as ongoing, in progress, or habitual depending on context
• вийду / піду usually refer to a completed single action in the future

So:

• Я виходжу з ліфта і йду до офісу. = I am in the process of doing this / this is what happens
• Я вийду з ліфта і піду до офісу. = I will get out of the elevator and then go to the office

Yes. Very often you can.

Ukrainian verb endings usually show the subject clearly:

• виходжу
• йду

Both already mean I because of the -у / -ю ending pattern in first person singular.

So these are both natural:

• Я виходжу з ліфта і йду до офісу.
• Виходжу з ліфта і йду до офісу.

Including Я can add emphasis, clarity, or contrast.

Because і simply connects two verbs with the same subject in one sentence:

• виходжу
• йду

This is similar to English I get out of the elevator and go to the office. No comma is needed.

A comma would only appear if the structure were more complex, for example with a subordinate clause or an inserted phrase.

Yes. Ukrainian word order is more flexible than English, because cases show the grammatical relationships.

The neutral order here is:

• Я виходжу з ліфта і йду до офісу.

But you could also move parts around for emphasis:

• З ліфта я виходжу і йду до офісу.
• Я йду до офісу, виходячи з ліфта. (different structure, more literary)

Even though word order can change, the original sentence is the most straightforward and natural for a learner.

It can match several English verbs depending on context.

виходити / виходжу basically means to go out / come out / exit.

With з ліфта, natural English translations include:

• I get out of the elevator
• I come out of the elevator
• I exit the elevator

So the exact English verb may change, but the Ukrainian meaning stays the same.

They are standard Ukrainian words, but they are borrowings in origin.

• ліфт = elevator/lift
• офіс = office

They behave like normal Ukrainian masculine nouns:

• ліфт, ліфта
• офіс, офісу

So even if their history is borrowed, grammatically they work just like regular Ukrainian nouns.