У середу я працюю вдома.

Because after у/в to mean on a day of the week, Ukrainian normally uses the accusative case.

• dictionary form: середа = Wednesday
• accusative form: середу

So:

• у середу = on Wednesday

This is one of the first places where English speakers notice that Ukrainian changes noun endings depending on grammar.

У and в are two pronunciation variants of the same preposition here. Both can mean in or on, depending on context.

Ukrainian often chooses у or в based on what sounds smoother. Before a word like середу, у середу is easier to say than в середу.

So this is mostly about euphony—making the sentence flow better.

Працюю is the 1st person singular present tense of працювати = to work.

So:

• працювати = to work
• працюю = I work / I am working

The verb ending already shows the subject is I, which is why Ukrainian can often leave out я if it wants to.

Because Ukrainian often includes the pronoun for emphasis, clarity, or natural rhythm, even though it is not always necessary.

So both are possible:

• У середу я працюю вдома.
• У середу працюю вдома.

The version with я sounds completely normal. It just makes the subject explicit.

Вдома means at home.

It is best thought of as an adverb, not as a preposition + noun combination.

That is why it does not change like a regular noun phrase would.

Compare:

• вдома = at home
• в домі = in the house

These are not quite the same. Вдома focuses on the idea of home as your home environment. В домі is more literally inside the house/building.

Yes, potentially. Ukrainian present tense can cover both a scheduled/specific meaning and a habitual meaning, depending on context.

So this sentence could mean:

• On Wednesday, I’m working at home
• On Wednesdays, I work at home

If you want to make the habitual meaning especially clear, Ukrainian often uses words like щосереди = every Wednesday.

Yes, Ukrainian word order is fairly flexible.

This version puts the time expression first:

• У середу = On Wednesday

That makes Wednesday the starting point of the sentence.

Other orders are possible, for example:

• Я працюю вдома у середу.
• Я у середу працюю вдома.

They all mean roughly the same thing, but the emphasis changes a little. The given sentence feels natural because it starts with the time frame and then gives the main information.

They are very close in meaning, and both can be heard, but вдома is the safer standard choice for learners.

So if you want a clearly standard Ukrainian version, use:

• вдома

Many learners are taught this first because it is the most reliable option in standard usage.

A useful approximate pronunciation is prats-YU-yu.

The important thing for learners is that the ending is not one long vowel. You really pronounce both parts:

• пра-цю-ю

So юю is not a typo. It reflects the real verb form.

Normally, no. Days of the week are written with a lowercase letter in Ukrainian, unless they begin the whole sentence for some other reason.

So:

• у середу = correct
• у Середу = not correct in normal writing

This is different from English, where Wednesday is capitalized.