Bærret er lille og sødt.

Because bærret is the definite singular form: the berry.

In Danish, the definite article is usually attached to the end of the noun instead of being a separate word in front:

• et bær = a berry
• bærret = the berry

So the sentence uses bærret because it is talking about a specific berry.

Danish often puts the at the end of the noun as a suffix.

So instead of:

• English: the berry

you get:

• Danish: bærret

This is very common in Danish:

• en bog = a book
• bogen = the book
• et hus = a house
• huset = the house

Since bær is a neuter noun, its definite ending is -et, giving bærret.

Because bær is a neuter noun in Danish.

Danish nouns have two grammatical genders:

• common gender: takes en
• neuter gender: takes et

So you have to learn the noun together with its article:

• et bær = a berry

That gender matters because it affects adjective endings too, as you can see later in sødt.

Because adjectives in Danish often agree with the noun, and bær is neuter singular.

The basic adjective is:

• sød = sweet

But in the neuter singular, it becomes:

• sødt

So:

• en sød frugt = a sweet fruit
• et sødt bær = a sweet berry

The same agreement happens even when the adjective comes after er:

• Bærret er sødt = The berry is sweet

Because lille is an irregular adjective.

Unlike many Danish adjectives, lille does not add -t in the neuter singular. It stays lille in singular.

So you get:

• en lille bog = a small book
• et lille bær = a small berry
• Bærret er lille = The berry is small

Its plural form is different:

• små = small

So:

• små bær = small berries

Yes, very often they do.

In English, adjectives do not change:

• the berry is sweet
• the apples are sweet

But in Danish, adjectives can still agree with the noun even when they come after a verb like er:

• Bærret er sødt = neuter singular
• Frugten er sød = common gender singular
• Bærrene er søde = plural/definite

So sødt is not there because of position; it is there because bærret is a neuter singular noun.

Because this is a normal Danish main clause with the usual basic pattern:

• subject + verb + complement

So:

• Bærret = subject
• er = verb
• lille og sødt = adjectives describing the subject

This is very similar to English:

• The berry is small and sweet

In this sentence, Danish word order is quite straightforward.

Og means and.

It links the two adjectives:

• lille = small
• sødt = sweet

So lille og sødt means small and sweet.

This works much like English:

• Bærret er lille og sødt = The berry is small and sweet

Because in a simple list of two adjectives joined by og, Danish normally does not use a comma there.

So:

• lille og sødt = correct

That is similar to English in a sentence like:

• small and sweet

You would normally only use commas in more complex structures, not in a simple X and Y phrase like this.

The spelling reflects how the word is formed and pronounced.

The noun is:

• bær

When the definite ending -et is added, the written form becomes:

• bærret

The double r helps preserve the correct spelling pattern and pronunciation of the noun in its inflected form.

So this is something best learned as part of the full noun pattern:

• et bær
• bærret
• bær
• bærrene

Æ is a vowel that does not exist exactly the same way in English.

A rough approximation is the vowel in English air, care, or cat, depending on accent, but none of these is perfect.

So bær sounds somewhat like:

• bear in some English accents, but not exactly

The important thing is that æ is its own Danish vowel, and you should try to hear it from native audio if possible.

Not fully, at least not the way an English speaker might expect from the spelling.

A few helpful points:

• ø is a rounded vowel with no exact English equivalent
• the final -dt is not pronounced as a full clear d plus t in careful English style
• Danish final consonants are often softer or less distinct than English learners expect

So sødt may sound much smoother and more compressed than its spelling suggests.

The best strategy is to learn it as a whole sound rather than letter by letter.

In the present tense, yes: Danish verbs do not change the way English verbs do.

The present form of at være is:

• er

Examples:

• jeg er = I am
• du er = you are
• bærret er = the berry is
• de er = they are

So er works for all persons in the present tense.

Yes. That would also be grammatical.

Both of these are possible:

• Bærret er lille og sødt
• Bærret er sødt og lille

The difference is mainly one of emphasis or natural flow. The original sentence simply chooses to mention small before sweet.

The plural would be:

• Bærrene er små og søde.

Here several things change:

• bærret → bærrene = the berries
• lille → små = small in plural
• sødt → søde = sweet in plural

So this sentence is a good example of how both nouns and adjectives change in Danish.