Barnið borðar berið.

Because both nouns are neuter singular definite forms.

In Icelandic, the definite article the is usually added to the end of the noun instead of being a separate word.

• barn = child

• barnið = the child

• ber = berry
• berið = the berry

So the ending -ið here is basically the neuter singular form of the.

Icelandic usually uses a suffixed definite article, meaning the article is attached to the noun.

So instead of a separate word like English the child and the berry, Icelandic normally says:

• barnið
• berið

There is also a separate article (hinn / hin / hið), but learners usually first meet the suffixed article because it is the normal everyday pattern.

• Barnið is in the nominative case because it is the subject.
• Berið is in the accusative case because it is the direct object.

So the structure is:

• barnið = the child (subject)
• borðar = eats
• berið = the berry (object)

Because in Icelandic, neuter singular nominative and accusative are often identical in form.

That means:

• nominative barnið = the child
• accusative barnið = the child

and also:

• nominative berið = the berry
• accusative berið = the berry

So even though the cases are different in function, the actual forms happen to be the same here.

Mostly from word order.

In a normal Icelandic main clause, the usual neutral order is:

subject + verb + object

So:

• Barnið = subject
• borðar = verb
• berið = object

Because both nouns are neuter singular and have the same nominative/accusative shape, word order is doing a lot of the work in this sentence.

Because borðar is the present tense form used with a third-person singular subject here.

The dictionary form is borða = to eat.

Relevant present-tense forms are:

• ég borða = I eat
• þú borðar = you eat
• hann / hún / það borðar = he / she / it eats

Since barnið is third person singular, the sentence uses borðar.

They are:

• barn = child
• borða = to eat
• ber = berry

This is useful because Icelandic words often appear in sentences in inflected forms, not just in their dictionary forms.

So:

• barnið comes from barn
• borðar comes from borða
• berið comes from ber

Yes. Barn is a neuter noun in Icelandic.

That is a matter of grammatical gender, not biological sex. So even if the child is male or female, the noun barn itself is still grammatically neuter.

This is very common in languages with grammatical gender: the gender of the noun does not always match real-world sex.

No. In this sentence, berið is singular: the berry.

A learner may wonder about this because the basic form ber can be confusing, but the definite forms help:

• berið = the berry
• berin = the berries

So here the sentence is talking about one berry, not several.

Yes. Barnið borðar berið is a very normal, straightforward Icelandic sentence with the basic order:

subject + verb + object

However, Icelandic also has the verb-second pattern in main clauses, so other elements can come first too. For example:

• Í dag borðar barnið berið = Today the child eats the berry.

So the sentence you have is the most neutral and simple order, but it is not the only possible one.

A good beginner approximation is that ð sounds like the th in this.

So you can think of:

• barnið
• borðar
• berið

as all containing that kind of th sound.

One extra point: in actual Icelandic pronunciation, ð can sound weaker in some positions, especially near the end of a word, so native pronunciation may not sound exactly like English th every time. But th in this is a good place to start.

In Icelandic, the stress is almost always on the first syllable.

So here the stress falls on:

• BAR-nið
• BOR-ðar
• BE-rið

That first-syllable stress is one of the most consistent pronunciation rules in Icelandic, and it is very helpful for learners.