Το στούντιο είναι μεγάλο.

Το is the definite article here, meaning the.

Greek articles change for gender, number, and case, so το is the form used with a singular neuter noun in the nominative/accusative.

In this sentence, στούντιο is a neuter singular noun, so it takes το:

• το στούντιο = the studio

Greek nouns belong to a grammatical gender: masculine, feminine, or neuter. This is a grammar category, not usually a statement about real-world sex or gender.

Στούντιο happens to be neuter, and many borrowed words ending in -ο are treated as neuter in Greek.

Because it is neuter, other words connected to it must match:

• article: το
• adjective: μεγάλο

So the neuter gender of στούντιο is the reason the sentence looks the way it does.

Because adjectives in Greek must agree with the noun they describe.

Since στούντιο is:

• neuter
• singular
• nominative

the adjective must also be neuter singular nominative, which is μεγάλο.

Compare:

• ο μεγάλος κήπος = the big garden (masculine)
• η μεγάλη πόλη = the big city (feminine)
• το μεγάλο στούντιο = the big studio (neuter)

Είναι is the verb to be in the present tense, here meaning is.

In this sentence:

• Το στούντιο = the subject
• είναι = is
• μεγάλο = big

So είναι connects the subject with its description, just like is in English.

A useful thing to know is that είναι is used for:

• he/she/it is
• they are

So the same form appears with both singular and plural subjects.

Greek usually does not need a dummy subject like English it in sentences such as It is big.

Instead, Greek simply says:

• Το στούντιο είναι μεγάλο.

The subject is already stated: το στούντιο. There is no need for an extra pronoun.

Greek often leaves subject pronouns out unless they are needed for emphasis or clarity.

Greek does have an indefinite article:

• ένας (masculine)
• μία / μια (feminine)
• ένα (neuter)

So a studio would be:

• ένα στούντιο

But your sentence uses το, which means the, so it is specifically the studio, not a studio.

Yes, Greek word order is often more flexible than English word order.

The most neutral order here is:

• Το στούντιο είναι μεγάλο.

But you may also hear:

• Μεγάλο είναι το στούντιο.
• Είναι μεγάλο το στούντιο.

These alternatives can sound more marked, contrastive, or context-dependent. For a learner, the basic pattern subject + είναι + adjective is the safest and most natural to use first.

A learner-friendly pronunciation is roughly:

• στούντιο ≈ STOON-dee-oh

A few details:

• ου sounds like oo in food
• ντ is often pronounced like d in words like this
• the stress falls on στούν-

So the stressed syllable is the first one: STOON-dio

A rough guide is:

• μεγάλο ≈ meh-GHA-lo

Notes:

• the stress is on γά
• γ before α is not exactly English g; it is a softer voiced sound made further back in the mouth
• learners often begin with a hard g-like sound, which is understandable, but listening to native speech will help

The important beginner point is the stress:

• μεγάλο

The accent mark shows which syllable is stressed.

So:

• στούντιο → stress on στούν
• είναι → stress on εί
• μεγάλο → stress on γά

Stress is important in Greek because it is part of the normal written form and helps you pronounce words correctly. When learning vocabulary, it is a good idea to memorize the accent together with the word.

It is a loanword, borrowed from an international word like studio.

Greek uses many borrowed nouns, especially for modern objects, places, media, and technology. Even when a word is borrowed, it still behaves according to Greek grammar, so here it takes:

• the neuter article το
• the neuter adjective μεγάλο

So although the word is borrowed, the sentence structure is fully Greek.

Normally, no—not in a basic sentence like this.

Greek usually uses the article with nouns when English would also say the:

• Το στούντιο είναι μεγάλο.

Leaving out the article would sound unnatural in most ordinary contexts. There are special cases where articles are omitted, but for a simple sentence like this, you should keep το.

Yes. Like English big or great, μεγάλος / μεγάλη / μεγάλο can refer to:

• physical size
• age (older)
• importance
• intensity

In your sentence, the natural meaning is physical size: the studio is large/big.

So the adjective is flexible, but the context usually makes the meaning clear.