Balık dün öldü.

Turkish does not have articles like English the and a/an.

So balık can mean things like:

• the fish
• a fish
• sometimes just fish, depending on context

In this sentence, the context usually makes it natural to understand balık as the fish or a fish.

Because öldü means died, and to die is an intransitive verb. That means it does not take a direct object.

So in Balık dün öldü, balık must be the thing that died, not the thing something happened to.

In other words:

• balık = the subject
• öldü = died
• dün = yesterday

Öldü comes from the verb ölmek, meaning to die.

Here is the basic breakdown:

• öl- = verb stem, die
• -dü = past tense ending

So öldü means he/she/it died.

Turkish verbs already show the person, so you do not need a separate subject pronoun like it.

In Turkish, subject pronouns are often omitted because the verb ending usually gives enough information.

With öldü, the meaning is already he/she/it died in the past tense. Since balık is present, adding a pronoun would be unnecessary.

So Turkish commonly says:

• Balık öldü = The fish died

not something like Balık o öldü.

Yes, Turkish word order is flexible, although the most neutral pattern is often:

subject + time + other elements + verb

So Balık dün öldü is a very natural sentence.

You may also see:

• Dün balık öldü.
• Balık öldü dün.

These are possible, but they may sound different in focus or emphasis. The most neutral version here is Balık dün öldü.

Yes, in this sentence dün is just the adverb yesterday.

Time words in Turkish often appear on their own as adverbs, without any special preposition like English on or in.

So Turkish says simply:

• dün = yesterday
• bugün = today
• yarın = tomorrow

In this sentence, it normally refers to a single fish, because the verb öldü is singular and the sentence describes one event.

If you wanted a clearly plural meaning, you would usually say:

• Balıklar dün öldü = The fish died yesterday

So balık here is most naturally understood as a fish or the fish, not fish in general.

Turkish third-person singular verbs do not need any extra marker beyond the tense ending.

Here:

• öldü = he/she/it died

If the subject were plural, Turkish often still allows the same verb form in many contexts, though you can also have plural marking depending on style and emphasis.

For a beginner, the key point is:

• singular subject: balık öldü
• plural subject: balıklar öldü

A rough pronunciation guide:

• balık ≈ bah-luhk
• öldü ≈ url-dyoo or oehl-dyoo, depending on how closely you imitate Turkish vowels

Important vowel notes:

• ı is not the English i. It is a back vowel with no exact English equivalent.
• ö is like the German ö or the vowel in French peu.
• ü is like the German ü or French u.

Also, Turkish spelling is very regular, so once you learn the sounds, pronunciation becomes much easier.

This is because of Turkish vowel harmony and consonant harmony.

The past tense suffix has several forms, such as:

• -dı
• -di
• -du
• -dü
• and after some consonants, -tı / -ti / -tu / -tü

Since the verb stem here is öl-, the matching form is -dü, giving öldü.

So the ending changes form to fit the sounds of the stem.

The dictionary form is ölmek.

Turkish dictionaries usually list verbs in the -mek / -mak infinitive form.

So:

• ölmek = to die
• öldü = died

When learning verbs, it is useful to remember both the dictionary form and the stem:

• dictionary form: ölmek
• stem: öl-

No. Öldü specifically means died, meaning the event happened yesterday.

If you wanted to say The fish was dead yesterday, Turkish would use a different structure, for example something based on ölü meaning dead.

So:

• Balık dün öldü = The fish died yesterday
• not The fish was dead yesterday

Yes, it is short, simple, and natural.

It is the kind of basic sentence Turkish uses very comfortably:

• noun subject
• time adverb
• verb at the end

So Balık dün öldü is a good model sentence for learning basic Turkish sentence structure.