Команда празднует победу.

Because победу is in the accusative case.

The verb праздновать / празднует means to celebrate, and the thing being celebrated is the direct object. In Russian, a direct object often takes the accusative case.

• nominative: победа = victory
• accusative: победу = victory

So:

• Команда = the team
• празднует = celebrates
• победу = the victory

That is why it is победу, not победа.

Празднует is the 3rd person singular present-tense form of праздновать.

Dictionary form:

• праздновать = to celebrate

In this sentence:

• команда is singular
• so the verb is also singular: празднует

A quick pattern:

• я праздную = I celebrate
• ты празднуешь = you celebrate
• он / она празднует = he / she celebrates
• мы празднуем = we celebrate
• они празднуют = they celebrate

So Команда празднует literally means The team celebrates.

Because команда is grammatically singular in Russian.

Even though a team contains multiple people, the noun itself is one unit:

• команда = team

So Russian uses a singular verb:

• Команда празднует

This is similar to English The team celebrates in form, although English sometimes varies in actual usage depending on dialect.

Команда is in the nominative case, because it is the subject of the sentence.

The nominative is the basic dictionary form used for the person or thing doing the action.

Here:

• Команда = the team = subject
• празднует = celebrates
• победу = victory = object

So the sentence structure is:

• Команда — nominative
• победу — accusative

Праздновать is imperfective.

Russian aspect matters a lot:

• imperfective = focuses on the process, ongoing action, or general fact
• perfective = focuses on a completed whole action

Here, празднует presents the action as in progress or simply describes what the team is doing:

• Команда празднует победу. = The team is celebrating the victory / The team celebrates the victory.

The perfective partner is often:

• отпраздновать = to celebrate completely, to finish celebrating

For example:

• Команда отпраздновала победу. = The team celebrated the victory / finished celebrating the victory.

It can mean either, depending on context.

Russian present tense often covers both:

• The team celebrates the victory
• The team is celebrating the victory

Without extra context, Команда празднует победу most naturally sounds like:

• The team is celebrating the victory or
• The team celebrates the victory

Russian does not usually need a separate form like English is celebrating.

The stress is:

• кома́нда
• пра́зднует
• побе́ду

That means:

• ко-МА-нда
• ПРАЗднует
• по-БЕ-ду

Stress is very important in Russian, because it can affect pronunciation of the unstressed vowels.

Yes, it is a bit tricky at first.

A rough pronunciation guide:

• пра́зднует ≈ PRAHZD-noo-yet

Things to notice:

• the stress is on the first syllable: пра́-
• -ует is pronounced roughly like oo-yet
• consonant clusters like здн are common in Russian and may sound compressed in normal speech

Do not worry if it feels awkward at first. Russian learners often need practice with clusters like this.

Because Russian has no articles.

English says:

• the team
• the victory or
• a team
• a victory

Russian usually just says:

• команда
• победу

Whether English needs a or the depends on context, but Russian does not mark that with separate words.

So:

• Команда празднует победу could correspond to The team is celebrating the victory.

Yes. Russian word order is more flexible than English word order because case endings show the grammatical roles.

The neutral order here is:

• Команда празднует победу.

But other orders are possible, for example:

• Победу празднует команда.

That still means roughly the same thing, but the emphasis changes. The moved word often gets special focus.

Very roughly:

• Команда празднует победу. = neutral statement
• Победу празднует команда. = It is the victory that the team is celebrating / The team is the one celebrating the victory

So the basic meaning stays, but the emphasis can shift.

Sometimes yes, but it depends on context.

Russian often omits subjects when they are clear from the situation. However, празднует by itself only tells you he/she/it is celebrating, not exactly who.

So:

• Празднует победу. = He/She/It is celebrating the victory or is celebrating the victory, depending on context

If you want to clearly say the team, then команда should stay in the sentence:

• Команда празднует победу.

Победа is inanimate.

That matters because in Russian, the accusative case behaves differently for some nouns depending on whether they are animate or inanimate.

For this noun:

• nominative: победа
• accusative: победу

Since it is a feminine singular noun ending in -а, the accusative changes to -у.

This is a very common pattern:

• книга → книгу
• машина → машину
• победа → победу

The structure is:

• Команда — subject
• празднует — verb
• победу — direct object

So it follows a straightforward Subject–Verb–Object pattern:

• Команда = team
• празднует = celebrates
• победу = victory

This makes it a very useful beginner sentence because the grammar is simple and typical.