Dacă vă este sete, paharul este pe raftul din stânga.

Dacă means if. It introduces a condition:

• Dacă vă este sete = If you are thirsty
• paharul este pe raftul din stânga = the glass is on the shelf on the left

So the whole sentence has the same basic structure as English: If X, Y.

Romanian also often uses a comma after this kind of introductory dacă clause, just like English often does after if clauses at the beginning.

In Romanian, to be thirsty is not expressed the same way as in English.

You do not usually say you are thirsty with an adjective. Instead, Romanian uses the expression:

• îmi este sete = I am thirsty
• îți este sete = you are thirsty
• îi este sete = he/she is thirsty
• ne este sete = we are thirsty
• vă este sete = you are thirsty
• le este sete = they are thirsty

So sete is a noun meaning thirst, and the construction is more like:

• to me is thirst
• to you is thirst

That is why este is used, not sunteți.

Vă is an unstressed pronoun here, meaning to you.

In this sentence, it can refer to:

• you (plural), talking to more than one person
• you (formal singular), talking politely to one person

So vă este sete means literally something like thirst is to you.

This is a very common Romanian pattern with sensations and states such as hunger, thirst, cold, fear, etc.

Because the verb agrees with sete, not with vă.

Here, sete is grammatically treated as singular, so Romanian uses singular este:

• vă este sete

Even if vă refers to several people, the expression stays the same because the core noun is still sete.

The same thing happens in similar expressions:

• vă este foame = you are hungry
• vă este frig = you are cold

Yes, vă can sound either:

• formal singular: talking politely to one person
• plural: talking to several people

If you are speaking to one friend informally, you would usually say:

• Dacă ți-e sete, paharul este pe raftul din stânga.

or in a less contracted form:

• Dacă îți este sete, paharul este pe raftul din stânga.

So the difference is mainly:

• vă este sete = formal singular or plural
• îți este sete / ți-e sete = informal singular

Yes. In everyday Romanian, este is often shortened to e:

• vă este sete → vă e sete

Both are correct. The longer form can sound a bit more careful or formal, while the shorter form is very common in speech.

Likewise:

• îți este sete → ți-e sete
• îmi este sete → mi-e sete

So in conversation, you will often hear Dacă vă e sete...

Because paharul means the glass, while pahar means a glass or just glass.

Romanian usually puts the definite article at the end of the noun:

• pahar = glass
• paharul = the glass

This is one of the most important differences from English. Instead of a separate word like the, Romanian attaches it to the noun.

For the same reason:

• raft = shelf
• raftul = the shelf

So:

• pe raft = on a shelf / on shelf
• pe raftul = on the shelf

In this sentence, the speaker means a specific shelf, so Romanian uses the definite form raftul.

Pe here means on.

So:

• pe raftul = on the shelf

This is the normal preposition for something resting on a surface.

Examples:

• Cartea este pe masă. = The book is on the table.
• Paharul este pe raft. = The glass is on the shelf.

Din stânga means on the left or from the left depending on context, but here it means the one on the left / the left-hand one.

Literally:

• din = from / of / out of
• stânga = the left

In expressions like raftul din stânga, Romanian uses din to identify something by position:

• raftul din stânga = the shelf on the left
• ușa din dreapta = the door on the right
• casa din colț = the house on the corner

So it is a very natural Romanian way to say the left-hand shelf.

You can sometimes use an adjective like stâng in Romanian, but in this kind of everyday location phrase, din stânga is usually more natural.

Compare:

• raftul din stânga = the shelf on the left
• raftul stâng = the left shelf

The second one is understandable, but it may sound more technical, contrastive, or less idiomatic in many everyday situations. Romanian often prefers din stânga / din dreapta for positioning objects.

Because they belong to two different parts of the sentence:

• vă este sete = you are thirsty
• paharul este pe raftul din stânga = the glass is on the shelf on the left

So the sentence contains:

1. a conditional clause
2. a main clause

Each clause has its own verb.

The given word order is completely natural, but Romanian word order is somewhat flexible.

The original sentence:

• Dacă vă este sete, paharul este pe raftul din stânga.

You could also say:

• Paharul este pe raftul din stânga, dacă vă este sete.

This is grammatically possible, but it changes the emphasis slightly. The original version sounds more natural if you want to start with the condition if you are thirsty.

Romanian often places the condition first, just as English often does.

Yes, pahar normally means a drinking glass.

It does not usually mean:

• cup = ceașcă
• mug = often cană

So paharul here is specifically the glass.

It is mostly neutral to polite.

Why?

• vă makes it either plural or polite singular
• vă este sete sounds natural and correct
• the full form este is a little more careful than the spoken contraction e

So depending on context, it can sound:

• polite to one person
• neutral to a group
• slightly more careful than everyday casual speech

A more conversational version might be:

• Dacă vă e sete, paharul e pe raftul din stânga.

But the original is perfectly good Romanian.

This sentence is useful because it shows several important Romanian patterns at once:

1. Conditional clause with dacă

   • Dacă... = If...

2. Romanian sensation expression

   • vă este sete = literally something like thirst is to you

3. Clitic pronoun

   • vă = to you

4. Postposed definite article

   • paharul = the glass
   • raftul = the shelf

5. Common location preposition

   • pe = on

6. Position phrase

   • din stânga = on the left

So even though the sentence is short, it contains several very common Romanian structures.