Акт приёмки подтверждает завершение работ.

Because акт приёмки is a very common Russian noun phrase pattern: noun + genitive noun, where the second noun specifies the type or purpose of the first.

So:

• акт = act, document, certificate, report
• приёмки = of acceptance / of handover / of receiving

Together, акт приёмки means something like acceptance certificate, handover document, or acceptance report, depending on context.

This is similar to:

• план проекта = project plan
• конец недели = end of the week
• директор компании = director of the company

In English, we often use noun+noun combinations, but Russian usually uses the genitive for this relationship.

Not really. In this context, акт is a formal or official document.

In business, construction, legal, and administrative Russian, акт often means:

• a certificate
• a formal report
• a signed document recording a fact

So акт приёмки is not an act in the everyday English sense. It is a formal paper confirming that something has been accepted, handed over, or completed.

Because the subject is акт приёмки, and the head noun there is акт, which is:

• masculine
• singular

So the verb agrees with акт:

• акт подтверждает = the document confirms

Even though приёмки is also present, it is only a dependent noun in the genitive. It does not control the verb.

Because it is the direct object of подтверждает.

The verb подтверждать / подтвердить means to confirm, and it normally takes a direct object in the accusative:

• подтверждать факт = to confirm a fact
• подтверждать получение = to confirm receipt
• подтверждает завершение работ = confirms the completion of the work

Here:

• подтверждает = confirms
• завершение = completion

Since завершение is a neuter inanimate noun, its accusative form is the same as the nominative form.

Because завершение is followed by the genitive to show what is being completed.

So:

• завершение чего? = completion of what?
• работ = of works / of work

This is a standard pattern with many verbal nouns:

• выполнение задания = completion/performance of the task
• обсуждение проекта = discussion of the project
• проверка документов = checking of the documents

As for the form itself:

• singular: работа
• plural nominative: работы
• plural genitive: работ

So завершение работ literally means completion of works. In natural English, this is often translated simply as completion of the work or completion of the works, depending on the context.

In formal, technical, and construction-related Russian, работы often means works, tasks, or operations as a set of activities.

So завершение работ is a standard formal phrase meaning:

• completion of the work
• completion of the works
• completion of the contracted tasks

Using the plural can make the phrase sound more official or technical than just завершение работы, which might refer to one job, one task, or the act of working in a more general sense.

Both can relate to acceptance, but they are used a bit differently.

• приёмка is very common in business, technical, construction, and administrative contexts for the formal process of checking and accepting finished work, goods, or services.
• принятие is a broader noun meaning acceptance, adoption, or taking.

For example:

• акт приёмки = acceptance/handover certificate
• принятие решения = decision-making / adoption of a decision
• принятие закона = adoption of a law

So in this sentence, приёмки sounds more idiomatic and professional.

Yes, the correct pronunciation has ё: приёмки.

However, in many Russian texts, especially ordinary printed text, ё is often replaced by е, so you may see:

• приёмки
• приемки

Both represent the same word, but приёмки shows the pronunciation more clearly.

Pronunciation:

• приёмка sounds roughly like pree-YOM-ka
• stress: приЁмки

This is useful because stress matters in Russian, and ё always carries the stress.

It is definitely formal, especially business, legal, administrative, or construction-related Russian.

Phrases like:

• акт приёмки
• завершение работ
• подтверждает

sound official and document-like.

In everyday speech, a person might say something simpler depending on the situation, but this sentence sounds exactly like something you would see in paperwork, a contract, or an official report.

Yes, Russian word order is flexible, but the original order is the most neutral and natural for an official statement:

• Акт приёмки подтверждает завершение работ.

Other orders are possible, for example:

• Завершение работ подтверждает акт приёмки.

This still makes grammatical sense, but it changes the emphasis. It sounds more like It is the acceptance certificate that confirms the completion of the work.

In formal writing, Russian often keeps a straightforward order: subject + verb + object, which is exactly what you have here.

Подтверждает is the imperfective present-tense form of подтверждать.

Aspect pair:

• подтверждать = imperfective
• подтвердить = perfective

Here, the present tense is used to state a general fact about the document:

• Акт приёмки подтверждает... = The acceptance certificate confirms...

This is very common in definitions, official descriptions, and legal-style language. It describes the function of the document rather than a one-time action happening right now before your eyes.

Russian has no articles. So Акт приёмки can mean:

• the acceptance certificate
• an acceptance certificate

Which one sounds best in English depends on context.

Russian leaves that information to context, word order, and the situation. In an official document, this sentence often implies a specific document, so English would often use the.

A useful breakdown is:

• Акт — nominative singular masculine; the head noun and subject
• приёмки — genitive singular; modifies акт
• подтверждает — 3rd person singular present imperfective verb
• завершение — accusative singular neuter; direct object
• работ — genitive plural; dependent on завершение

So the structure is:

• [Акт приёмки] = subject noun phrase
• подтверждает = verb
• [завершение работ] = object noun phrase

This is a very typical formal Russian sentence structure.