Anneanne torunuyla parkta yavaşça yürüdü.

Anneanne means maternal grandmother: your mother’s mother.

Turkish often distinguishes the two:

• anneanne = mother’s mother
• babaanne = father’s mother

A more general word is büyükanne, which can mean grandmother without specifying which side of the family.

Turkish does not have definite articles like English the.

So Anneanne torunuyla parkta yavaşça yürüdü can naturally be understood as:

• The grandmother walked slowly in the park with her grandchild
• or Grandma walked slowly in the park with her grandchild

The exact nuance depends on context.

Because Turkish adds many grammatical endings directly to nouns.

torunuyla can be broken down like this:

• torun = grandchild
• -u = his/her (3rd person possessive)
• -yla = with

So torunuyla means with his/her grandchild, and in this sentence it is understood as with her grandchild.

Turkish usually attaches these endings to the word instead of writing separate words.

Because torunuyla means with her grandchild, not just with a grandchild.

Compare:

• torunla / torun ile = with a grandchild / with the grandchild
• torunuyla = with his/her grandchild

That -u is the 3rd person possessive ending. It shows that the grandchild belongs to or is related to some third person, which here is naturally the grandmother.

The word ile means with, but in everyday Turkish it is often attached to the noun as a suffix:

• torun ile
• torunla
• torunuyla

In torunuyla, the noun form before ile ends in a vowel: torunu.
When this happens, Turkish inserts a buffer y:

• torunu + ile → torunuyla

So -yla / -yle is just the attached form of ile after a vowel-final form.

Parkta means in the park or at the park.

It is:

• park
• • -da/-de/-ta/-te = the locative suffix, meaning in / at / on

Why -ta here? Because the word park ends in k, which is a voiceless consonant. After voiceless consonants, this suffix uses t instead of d:

• evde = at home
• okulda = at school
• parkta = in the park

This is a regular sound pattern in Turkish.

It can mean either, depending on context.

The Turkish locative suffix often covers several English prepositions:

• in
• at
• sometimes on

So parkta could be translated as:

• in the park
• at the park

In this sentence, in the park is probably the most natural English translation.

Yavaşça means slowly.

It comes from yavaş = slow / slowly, with -ça, which often makes an adverb-like form.

Both of these are possible:

• yavaş yürüdü = walked slowly
• yavaşça yürüdü = walked slowly

Yavaşça can sound a little softer or more polished, but both are normal.

Because Turkish normally puts the verb at or near the end of the sentence.

This sentence follows a very typical Turkish order:

• Anneanne = subject
• torunuyla = with her grandchild
• parkta = in the park
• yavaşça = slowly
• yürüdü = walked

So the structure is very natural in Turkish. English usually puts the verb earlier, but Turkish often saves it for the end.

Yürüdü comes from yürümek, meaning to walk.

Here:

• yürü- = walk
• -dü = simple past tense

So yürüdü means he/she walked.

In this sentence, the subject is anneanne, so we understand it as the grandmother walked or she walked.

The ending is -dü because of vowel harmony. Turkish changes suffix vowels to match the word.

Because Turkish often leaves pronouns out when they are not needed.

Instead of saying O yürüdü for She walked, Turkish can simply say Yürüdü, especially when the subject is already clear.

Here the subject is explicitly given as Anneanne, so adding o would be unnecessary.

Yes. Turkish word order is flexible, although some orders sound more neutral than others.

For example, these are also possible:

• Anneanne parkta torunuyla yavaşça yürüdü.
• Parkta anneanne torunuyla yavaşça yürüdü.

They all mean roughly the same thing, but the emphasis changes:

• putting parkta earlier emphasizes the location
• putting torunuyla earlier emphasizes who she was with

The most neutral feature is that the verb usually stays at the end.

A rough pronunciation guide:

• yürüdü ≈ yu-ru-du, but with Turkish ü, which is like the u in French tu or German über
• torunuyla ≈ to-ru-nuy-la

A few tips:

• y is like English y in yes
• ü is not the same as English oo
• Turkish pronunciation is usually very regular and close to spelling

So once you know the sounds, these words are quite predictable to read.