Он живёт в другом штате.

Because after в you use different cases depending on the meaning:

• в + Prepositional = in a place, when talking about location
• в + Accusative = into a place, when talking about movement

Here the sentence means he lives in another state, so it describes location, not motion. That is why both words change into the Prepositional case:

• другой → другом
• штат → штате

So:

• в другом штате = in another state
• but в другой штат would mean into another state

Другой is an adjective meaning other / another / different. It has to agree with the noun it describes in:

• gender
• number
• case

Since штат is:

• masculine
• singular
• here in the Prepositional case

the adjective must match it:

• nominative: другой штат
• prepositional: в другом штате

This is normal adjective agreement in Russian.

Because it is in the Prepositional case after в when в means in.

The basic form is:

• штат = state

After в for location:

• в штате = in the state

With the adjective:

• в другом штате = in another state

Many masculine nouns take -е in the Prepositional singular.

Both words are in the Prepositional singular masculine.

Breakdown:

• другом = Prepositional singular masculine of другой
• штате = Prepositional singular of штат

So the whole phrase в другом штате is a Prepositional phrase meaning in another state.

In careful writing, the correct spelling is живёт with ё.

However, in many texts, Russian writers replace ё with е, so you will often see:

• живёт written as живет

Even when written е, it is usually still pronounced as ё if that is the word’s correct pronunciation.

So:

• живёт = correct full spelling
• живет = very common simplified spelling

For learners, it is useful to remember that the stress is on that syllable: живёт.

Живёт is the 3rd person singular present-tense form of жить (to live).

Conjugation:

• я живу = I live
• ты живёшь = you live
• он / она живёт = he / she lives
• мы живём = we live
• вы живёте = you live
• они живут = they live

So Он живёт literally means He lives.

Russian present tense often covers both meanings:

• He lives
• He is living

So Он живёт в другом штате can mean:

• He lives in another state
• He’s living in another state

Usually the context tells you whether it is a general fact or a temporary situation.

Yes, Russian often can drop subject pronouns when the subject is clear from the verb form or the context.

So you could say:

• Живёт в другом штате.

if it is already obvious who you are talking about.

But он is often included for clarity, contrast, or emphasis:

• Он живёт в другом штате, а я в этом. = He lives in another state, and I live in this one.

So он is not always required, but it is completely natural here.

No. Here другом comes from другой, meaning other / another / different.

It only looks a bit similar to друг (friend).

Compare:

• друг = friend
• другой = other / another

So in this sentence:

• в другом штате = in another state

not anything related to friend.

It can suggest either, depending on context.

Другой often means:

• another
• a different
• the other

So Он живёт в другом штате could be understood as:

• He lives in another state
• He lives in a different state

English usually chooses whichever sounds more natural in context.

Russian has no articles like English a / an / the.

So:

• штат can mean a state or the state
• другом штате can mean another state or the other state, depending on context

Russian leaves that kind of detail to context.

No, Russian word order is more flexible than English word order.

The neutral order here is:

• Он живёт в другом штате.

But other orders are possible for emphasis, for example:

• В другом штате он живёт.
• Он в другом штате живёт.

These can sound more marked or emphasize different parts of the sentence. The original version is the most straightforward and neutral.

A useful pronunciation guide is:

• Он живёт в другом штате
• approximately: on zhi-VYOT v droo-GOM SHTA-tye

Stress:

• живёт → stress on -ёт
• другом → stress on -гом
• штате → stress on шта-

Also note:

• ё is always stressed
• в is very short and unstressed

Usually штат means a state as an administrative division in a federal country, such as the US, India, Brazil, and some others.

It does not usually mean state in the sense of condition or status. For that meaning, Russian uses different words, such as:

• состояние = condition / state

So in this sentence, штат clearly means a political or administrative region.

Grammatically yes, but другом is the most normal everyday choice.

• другой = common, neutral, everyday
• иной = more formal, literary, or stylistically marked

So:

• Он живёт в другом штате sounds natural and standard.
• Он живёт в ином штате is possible, but less ordinary in everyday speech.

The dictionary forms are:

• он = he
• жить = to live
• в = in
• другой = other / another
• штат = state

In the sentence, some of them appear in changed forms:

• живёт from жить
• другом from другой
• штате from штат