Il mandarino è sul tavolo vicino alla finestra.

In Italian, you usually need an article where English might not use one or might use it less consistently.

Here, il means the, and il mandarino is the normal way to say the mandarin. A bare noun like mandarino would usually sound incomplete in a sentence like this unless you were using it in a special context, such as a label, dictionary entry, or very telegraphic style.

So for a normal full sentence, il mandarino is exactly what you expect.

You can tell from the article il, which is the singular masculine definite article.

Also, nouns ending in -o are often masculine in Italian, though that is only a common pattern, not an absolute rule.

So here:

• il mandarino = singular masculine
• plural: i mandarini

Because è is the verb is from essere.

The accent is important because it distinguishes è from e:

• è = is
• e = and

So the accent is not optional here. It is part of the correct spelling.

Because Italian normally combines certain prepositions with definite articles.

Here:

• su = on
• il = the
• su + il = sul

This kind of combination is very common in Italian. A few examples:

• a + il = al
• di + il = del
• in + il = nel
• su + il = sul

So sul tavolo is the normal form for on the table.

Because vicino is followed by a when you say something is near something.

So the structure is:

• vicino a = near

Then a combines with la:

• a + la = alla

So:

• vicino alla finestra = near the window

This is why you do not say vicino la finestra in standard Italian.

In this sentence, vicino describes tavolo.

So the structure is:

• sul tavolo vicino alla finestra
• literally: on the table near the window

Because vicino alla finestra comes right after tavolo, the most natural reading is that the table is near the window.

Because it agrees with tavolo, which is masculine singular.

• tavolo = masculine singular
• therefore vicino = masculine singular

If the noun were feminine, you would use vicina:

• la sedia vicina alla finestra = the chair near the window

So the ending changes to match the noun being described.

The most natural interpretation is that the table is near the window.

That is because vicino alla finestra is placed directly after tavolo, so it most naturally attaches to tavolo.

So native speakers will usually understand:

• The mandarin is on the table that is near the window.

If you wanted to make it clearer that the mandarin is near the window, you would normally rephrase the sentence.

Because Italian uses articles more often than English.

In this sentence you have:

• il mandarino
• sul tavolo = su + il
• alla finestra = a + la

English often sounds lighter in this respect, but Italian usually prefers to mark nouns with articles when they are specific and identifiable.

So even though English and Italian may express the same idea, Italian often needs more article forms to do it naturally.

Yes, but changing the word order can change the emphasis or make the sentence sound less clear.

Italian is somewhat flexible, but descriptive phrases usually stay close to the noun they describe. That is why vicino alla finestra comes right after tavolo if it describes the table.

So the original sentence is a very natural way to express that idea.

If you move things around too much, the listener may wonder what vicino alla finestra is referring to.

If there is more than one mandarin, you would say:

I mandarini sono sul tavolo vicino alla finestra.

Changes:

• il → i
• mandarino → mandarini
• è → sono

Notice that vicino stays singular here because it still describes tavolo, and tavolo is still singular.

If the table were plural too, then that part would also change:

• sui tavoli vicini alla finestra = on the tables near the window

A simple pronunciation guide is:

eel man-da-REE-no eh sool ta-VO-lo vee-CHEE-no AL-la fee-NES-tra

A few helpful notes:

• gli is not in this sentence, so nothing especially tricky there.
• è is pronounced like eh
• ci in vicino sounds like chee
• stress falls on:
  • mandarino
  • tavolo
  • vicino
  • finestra

A more Italian-like flow would be smoother than the English-style breakdown, but this is a good starting point.