Принц вошёл в зал.

Because Russian uses different cases after в depending on whether you mean motion into a place or location in a place.

• в + accusative = into
• в + prepositional = in / inside

So:

• Принц вошёл в зал. = The prince entered the hall / went into the hall
• Принц был в зале. = The prince was in the hall

Here, the action is movement into the hall, so зал is in the accusative case.

Because зал is a masculine inanimate noun, and in the singular, many masculine inanimate nouns have the same form in the nominative and accusative.

So:

• nominative: зал
• accusative: зал

That is completely normal.

Compare:

• стол → стол
• дом → дом

But with animate masculine nouns, the accusative often looks like the genitive instead.

Вошёл is the past tense, masculine singular form of the verb войти, which means to enter / to go in.

Breakdown:

• войти = infinitive
• вошёл = entered (said about a masculine subject)

Because the subject is принц, which is masculine, the verb takes the masculine past form.

Other past forms would be:

• вошла = feminine
• вошло = neuter
• вошли = plural

In Russian, past tense verbs agree with the subject in gender and number.

So:

• Принц вошёл. = masculine
• Принцесса вошла. = feminine
• Окно открылось. = neuter
• Гости вошли. = plural

This only happens in the past tense (and some related forms), not in the present tense the way it does here.

Because вошёл expresses a completed action: the prince entered and the action is seen as finished.

This is an aspect difference:

• войти / вошёл = perfective → completed entry
• входить / входил = imperfective → entering, used/habitual, or process-focused
• идти / шёл = to go / was going, but not necessarily reached or entered

So:

• Принц вошёл в зал. = The prince entered the hall.
• Принц входил в зал. = The prince was entering the hall / used to enter the hall.
• Принц шёл в зал. = The prince was walking toward the hall / was on his way to the hall.

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

It is the one performing the action:

• Принц = the prince
• вошёл = entered

So the basic structure is:

subject + verb + destination

Yes. Russian has no articles.

So принц can mean:

• a prince
• the prince

And зал can mean:

• a hall
• the hall

Which one is meant depends on context. English requires an article, but Russian usually does not.

Вошёл is pronounced roughly like va-SHYOL.

Important points:

• ё is always stressed
• ё sounds like yo
• after ш, the sound is still written ё, but the pronunciation is more like shol / shyol than a fully clear English yo

A practical learner pronunciation is:

• вошёл ≈ va-SHYOL

Also, in normal Russian writing, ё is often written as е, so you may see вошел, but it is still pronounced вошёл.

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

The neutral order here is:

• Принц вошёл в зал.

But you could also say:

• В зал вошёл принц.

That version puts more focus on into the hall or presents the prince a bit more dramatically, like Into the hall entered the prince.

So the meaning stays basically the same, but the emphasis changes.

It is a normal Russian noun, though historically it is a borrowing, like many European royal titles.

For a learner, the main useful point is that it behaves like a regular masculine noun:

• nominative: принц
• genitive: принца
• dative: принцу
• accusative: принца if animate
• instrumental: принцем
• prepositional: о принце

Because it refers to a person, it is animate, and that matters in some cases.

Animacy matters mainly when a noun is in the accusative case.

Here, принц is the subject, so it is in the nominative, not the accusative. That is why you simply have принц.

If it were an object, animacy would matter more. For example:

• Я вижу принца. = I see the prince.
  (accusative of an animate masculine noun)

But in Принц вошёл в зал, принц is not the object; it is the one doing the action.

You could, but it is not exactly the same.

• вошёл в зал = entered the hall
• зашёл в зал = went into the hall, often with a nuance of stopping by, dropping in, or simply stepping in

So вошёл is the most straightforward verb for plain entered.
Зашёл may suggest a slightly different nuance depending on context.

The stress is:

• принц — one syllable, so no issue
• вошёл — stress on ё
• зал — one syllable

So the whole sentence is pronounced approximately:

PRINTS va-SHYOL v ZAL

The unstressed в before зал is pronounced very lightly.