Actorul este emoționat înainte de premieră.

Because -ul is the Romanian definite article attached to the end of the noun.

• actor = actor
• actorul = the actor

This is very common in Romanian. Instead of putting a separate word like the before the noun, Romanian usually adds the definite article as an ending.

For masculine singular nouns ending in a consonant, -ul is a very common definite ending.

Romanian usually puts the definite article at the end of the noun, not before it.

So:

• actorul = the actor
• premiera = the premiere
• fata = the girl
• băiatul = the boy

This is one of the biggest differences from English. English uses a separate article; Romanian often uses a suffix.

Este is the 3rd person singular present form of a fi, which means to be.

So:

• eu sunt = I am
• tu ești = you are
• el/ea este = he/she is

In this sentence, este links the subject actorul with the adjective emoționat.

You will also often hear e instead of este in everyday speech:

• Actorul e emoționat...

That is very natural and common.

Because Romanian does not need a subject pronoun when the subject is already stated.

Here, actorul already tells you who we are talking about, so adding el would be unnecessary in normal speech:

• Actorul este emoționat... = perfectly natural

You could say:

• El este emoționat...

but only if the context already makes it clear who el is, or if you want emphasis.

Yes, it changes to agree with the noun in gender and number.

Here, actorul is masculine singular, so the adjective is also masculine singular:

• actorul emoționat = masculine singular

Other forms are:

• emoționată = feminine singular
• emoționați = masculine plural
• emoționate = feminine plural

Examples:

• Actrița este emoționată.
• Actorii sunt emoționați.
• Actrițele sunt emoționate.

So the ending of the adjective matches the noun it describes.

Not exactly.

Emoționat usually means something like:

• moved
• touched
• excited
• emotionally affected
• sometimes nervous with emotion

In this sentence, it probably suggests that the actor is emotionally stirred or excited before the premiere, not that he is an emotional person in general.

So this word is often more about a temporary emotional state than a personality trait.

This is an important distinction:

• emoționat = emotionally affected / moved / excited
• emoționant = moving / touching / emotionally powerful

So:

• Actorul este emoționat. = the actor feels emotion
• Filmul este emoționant. = the film causes emotion

A person can be emoționat, but a speech, film, or moment can be emoționant.

After înainte de, Romanian often uses the noun without the definite article, especially in common expressions about events, times, or activities.

So înainte de premieră is a natural Romanian phrase.

Even if English may say before the premiere, Romanian often does not mirror the article in exactly the same way.

If you want a more explicitly definite structure, Romanian also has:

• înaintea premierei

This also means before the premiere, and it sounds a bit more formal or literary.

So both ideas exist, but înainte de premieră is perfectly normal.

Înainte de is a fixed expression meaning before.

It is very common and can be followed by:

1. a noun

   • înainte de premieră
   • înainte de masă

2. a verb in infinitive-like form after a is not used here; instead Romanian often uses a noun or another structure
   For example:

   • înainte de plecare = before leaving / before departure

A closely related form is înaintea, which is followed by a genitive noun:

• înaintea premierei

So the two patterns are:

• înainte de + noun
• înaintea + genitive noun

A few helpful pronunciation points:

• ț is pronounced like ts in cats
• ă is a schwa sound, like the final sound in sofa

So:

• emoționat has ț = ts
• premieră ends with ă, not a full a sound

A rough English-friendly guide:

• Actorul ≈ ak-TOR-ul
• este ≈ ES-te
• emoționat ≈ e-mo-tsyo-NAT
• înainte ≈ în-AIN-te
• premieră ≈ pre-MYE-rə

This is only approximate, but it helps you notice the special Romanian sounds.

No, Romanian word order is flexible, though this sentence uses a very normal neutral order:

• Actorul = subject
• este emoționat = verb + adjective
• înainte de premieră = time phrase

This order sounds natural and straightforward.

You could also say:

• Înainte de premieră, actorul este emoționat.

That puts more focus on the time expression.

But the original order is probably the most neutral way to say it.