Lampinn hangir úr loftinu fyrir ofan borðið.

Because lampinn means the lamp, while lampi means a lamp or just lamp.

Icelandic usually puts the definite article on the end of the noun instead of using a separate word like English the.

• lampi = lamp
• lampinn = the lamp

Here, lampinn is the nominative singular definite form, because it is the subject of the sentence.

Hangir is the present tense, 3rd person singular form of the verb hanga, meaning to hang.

So:

• ég hangi = I hang
• þú hangir = you hang
• hann/hún/það hangir = he/she/it hangs

Since lampinn is singular, the verb is also singular: Lampinn hangir = The lamp hangs.

Úr means out of / from, and here it is the natural preposition for something hanging down from the ceiling.

So hangir úr loftinu is literally something like hangs from/out of the ceiling.

This is different from frá, which often means from in the sense of away from or originating from. In this sentence, úr fits better because the lamp is physically coming down from the ceiling.

Because úr takes the dative case, and loftinu is the dative singular definite form of loft.

The noun is:

• loft = ceiling
• loftið = the ceiling
• loftinu = to/from the ceiling, in dative contexts

So:

• úr loftinu = from the ceiling

This is a very common thing in Icelandic: prepositions often require a specific case.

Yes. In everyday Icelandic, loft often means ceiling in an indoor context.

Depending on context, loft can also relate to air or loft, but in a sentence about a lamp hanging in a room, loftinu clearly means the ceiling.

So learners should get used to the fact that loft does not always match English loft.

Yes. Fyrir ofan is best learned as a fixed expression meaning above or over.

So:

• fyrir ofan borðið = above the table

Even though it is written as two words, learners should usually treat it as one unit of meaning.

After fyrir ofan, Icelandic normally uses the accusative.

The noun borð is neuter, and in the singular definite form:

• borðið can be nominative or accusative
• borðinu is dative

So here borðið is the correct form after fyrir ofan.

A useful thing to remember is that for many neuter nouns in Icelandic, the nominative and accusative look the same, so you cannot always see the case difference from the ending alone.

They give two different kinds of information:

• úr loftinu = where the lamp is hanging from
• fyrir ofan borðið = where the lamp is located in relation to the table

So the sentence is more detailed than just The lamp is above the table. It says the lamp is:

1. attached to / hanging from the ceiling, and
2. positioned above the table

Because Icelandic usually expresses the by attaching it to the noun.

So instead of:

• the lamp
• the ceiling
• the table

you get:

• lampinn
• loftinu / loftið
• borðið

There is a separate article in Icelandic in some contexts, but for ordinary sentences like this, the suffixed article is the normal pattern.

The word order here is the most neutral and natural:

• Lampinn hangir úr loftinu fyrir ofan borðið.

But Icelandic word order can be moved around for emphasis or style. For example, a speaker might front a phrase in some contexts, especially in longer discourse.

Still, for a learner, this sentence is a very good basic model:

• subject: Lampinn
• verb: hangir
• prepositional phrases: úr loftinu, fyrir ofan borðið

So yes, word order can change, but this version is the safest one to learn first.

Yes, you could, and it would mean The lamp is above the table.

But it is slightly less specific.

• Lampinn er fyrir ofan borðið only tells you the lamp’s position.
• Lampinn hangir úr loftinu fyrir ofan borðið tells you both the position and that it is hanging from the ceiling.

So the original sentence is richer and more descriptive.