Η σαπουνοθήκη είναι πίσω από τη βρύση, όχι μέσα στη ντουζιέρα.

Η is the feminine singular definite article, meaning the.

So:

• η σαπουνοθήκη = the soap dish

The noun σαπουνοθήκη is feminine, so it takes η in the nominative case, because it is the subject of the sentence.

Because after these prepositions, Greek uses the accusative case.

In this sentence:

• πίσω από τη βρύση = behind the faucet/tap
• μέσα στη ντουζιέρα = inside the shower

So even though βρύση and ντουζιέρα are feminine nouns, they are not the subject here. They come after prepositions, so they appear in the accusative:

• nominative: η βρύση
• accusative: τη(ν) βρύση

and

• nominative: η ντουζιέρα
• accusative: τη(ν) ντουζιέρα

In Modern Greek, the feminine accusative article is often written as τη before many consonants, instead of την.

So both forms exist:

• τη βρύση
• την βρύση

But τη βρύση is very common and natural.

A simple learner rule is:

• before vowels, Greek usually keeps the -ν: την πόρτα? Wait, that starts with a consonant, so no. Better examples: την αυλή, την εικόνα
• before many consonants, the -ν may drop: τη βρύση, τη ντουζιέρα

You will see both in real Greek, depending on spelling style and speaker preference.

στη is the contraction of:

• σε = in / at / to
• τη = the (feminine accusative)

So:

• σε τη ντουζιέρα → στη ντουζιέρα

This contraction is standard and very common in everyday Greek.

Similar forms are:

• στο = σε + το
• στον = σε + τον
• στην = σε + την

Because πίσω από is the normal Greek expression for behind.

It is a two-word prepositional phrase:

• πίσω = back / behind
• από = from

Together, πίσω από means behind.

So:

• πίσω από τη βρύση = behind the faucet

You should learn πίσω από as a set phrase, just like English learners memorize in front of.

Because μέσα means inside or in, but it is very often used with σε when followed by a noun.

So the full structure is:

• μέσα σε τη ντουζιέρα
• contracted: μέσα στη ντουζιέρα

This means:

• inside the shower

Again, it helps to learn μέσα σε as a pattern.

Examples:

• μέσα στο σπίτι = inside the house
• μέσα στην τσάντα = inside the bag

Είναι is the 3rd person singular form of to be, so here it means is.

• η σαπουνοθήκη είναι... = the soap dish is...

But είναι can also mean are, because the 3rd person plural has the same form in Modern Greek:

• είναι = is
• είναι = are

You understand which one it is from the subject.

Όχι means not / no, and here it creates a contrast:

• πίσω από τη βρύση, όχι μέσα στη ντουζιέρα
• behind the faucet, not inside the shower

So the sentence is correcting or clarifying location.

This is very natural Greek. You can use όχι this way after a phrase to say not X, but Y or to correct a mistaken idea.

The comma marks a contrast:

• behind the faucet, not inside the shower

It separates the main statement from the correction.

In Greek writing, this is normal when όχι introduces a contrasting phrase.

Yes. Greek normally does not need an extra subject pronoun like it if the noun is already there.

English says:

• The soap dish is behind the faucet...

Greek says:

• Η σαπουνοθήκη είναι πίσω από τη βρύση...

There is no separate word for it because η σαπουνοθήκη already tells you the subject.

This is very common in Greek.

A rough pronunciation is:

• sa-poo-no-THEE-kee

Stress is on θή.

A rough breakdown:

• σα = sa
• που = poo
• νο = no
• θή = THEE
• κη = kee

The letter combination θη sounds like the th in think, not the th in this.

Yes. It is made from:

• σαπούνι = soap
• θήκη = case / holder / container

So σαπουνοθήκη literally means something like soap holder or soap container, which is why it means soap dish.

Greek forms many useful compound nouns like this.

All three nouns here are feminine:

• η σαπουνοθήκη = the soap dish
• η βρύση = the faucet / tap
• η ντουζιέρα = the shower tray / shower stall / shower area, depending on context

That is why you see feminine article forms like:

• η
• τη
• στη

It often refers to the shower area/stall, and in many contexts especially the shower tray/base.

So in a sentence like this, μέσα στη ντουζιέρα most naturally means inside the shower.

Exact translation depends on context, but for a learner, shower is usually a good practical meaning here.

Yes, Greek word order is more flexible than English, though this version is the most neutral and natural.

For example, Greek could also say:

• Πίσω από τη βρύση είναι η σαπουνοθήκη...

But that changes the emphasis. The original sentence starts with the subject and sounds straightforward:

• Η σαπουνοθήκη είναι πίσω από τη βρύση...

That is a very good basic pattern for learners: subject + είναι + place

The stressed syllables are:

• η σαπουνοθήκη
• είναι
• πίσω
• από
• βρύση
• όχι
• μέσα
• ντουζιέρα

Stress matters in Greek, so it is worth noticing the accent marks early.