Kız kardeşim peynirli börek seviyor, ben ise yanında soğuk ayran olunca daha çok seviyorum.

Kız kardeşim means my sister.

• kız kardeş = sister / female sibling
• -im = my

So kız kardeş + im becomes kız kardeşim. The possessive ending changes shape by vowel harmony, and here -im is the correct form.

Peynirli means with cheese or cheese-filled.

It comes from:

• peynir = cheese
• -li / -lı / -lu / -lü = a suffix meaning with, having, containing

So:

• peynirli börek = cheese börek / börek with cheese

This -li suffix is very common in Turkish:

• sütlü kahve = coffee with milk
• tuzlu = salty / with salt
• şekerli = with sugar / sweetened

Because peynirli börek here is a general, non-specific object.

In Turkish, when the direct object is indefinite or generic, it often appears without the accusative ending. So:

• peynirli börek seviyor = she likes cheese börek / she likes cheese pastries in general

If you used the accusative, as in peynirli böreği, it would sound more like a specific cheese börek:

• Peynirli böreği seviyor = she likes the cheese börek / that particular cheese börek

Because Turkish normally prefers subject–object–verb order.

So in the first clause:

• Kız kardeşim = subject
• peynirli börek = object
• seviyor = verb

That gives:

• Kız kardeşim peynirli börek seviyor.

English usually puts the verb earlier, but Turkish often saves the main verb for the end. Turkish word order is flexible, but verb-final order is very common and natural.

Yes, Turkish often drops subject pronouns because the verb already shows the subject.

For example:

• seviyorum already means I like
• seviyor already means he/she likes

But ben is included here for contrast:

• Kız kardeşim ... , ben ise ...

This makes the contrast clearer:

• My sister likes it, but I...
• As for me...

So ben is not required for grammar, but it is helpful for emphasis.

Here ise is a contrast marker. It means something like:

• as for
• whereas
• but
• on the other hand

So:

• ben ise = but I / whereas I / as for me

It helps set up a comparison between the sister’s preference and the speaker’s preference.

Yanında literally means at its side or next to it, but in food contexts it often means with it or on the side.

So here:

• yanında soğuk ayran = cold ayran with it / cold ayran on the side

Grammatically, yanında is built from:

• yan = side
• -ı = its
• -nda = in/on/at

So literally it is something like at its side. In this sentence, it refers to the börek.

Olunca comes from olmak (to be, to become, to happen, to occur).

The ending -ınca / -ince / -unca / -ünce often means:

• when
• once
• if

So olunca can mean:

• when it is
• when there is
• once there is
• if there is

In this sentence, yanında soğuk ayran olunca means roughly:

• when there is cold ayran with it
• when it comes with cold ayran

It can be either, depending on context.

In this sentence, when is usually the most natural translation:

• I like it more when there is cold ayran with it.

But the idea is also slightly conditional, so in some contexts English might use:

• if it comes with cold ayran

Turkish often uses one form where English might choose between when and if.

Because the object is understood from context.

The sentence already mentioned peynirli börek, so in the second clause Turkish does not need to repeat it. The meaning is:

• I like it more...

The hidden object is basically the börek.

A fuller version could repeat it, but it would be less natural if the context is already clear.

No. Daha çok seviyorum means I like it more or I like it better.

Compare:

• çok seviyorum = I like it a lot / very much
• daha çok seviyorum = I like it more

So daha adds the idea of comparison.

In this sentence, the natural meaning is:

• I like börek more when there is cold ayran with it.

They are the same verb, but with different subject agreement.

• seviyor = he/she likes
• seviyorum = I like

Breakdown:

• sev- = like, love
• -iyor = present/progressive marker
• -um = I

So:

• seviyor = sev-iyor
• seviyorum = sev-iyor-um

In Turkish, the verb ending usually tells you who the subject is.

In Turkish, -iyor is often taught as the present continuous, but in real usage it also commonly covers present habits and general current states.

So:

• seviyor can mean is liking in a literal sense, but more naturally here it means likes
• seviyorum means I like

For preferences, Turkish often uses -iyor where English simply uses the present simple.

Because Turkish does not have a direct equivalent of the English definite article the.

Also, bir can mean a/an or one, but it is not always needed.

So in Turkish:

• peynirli börek can mean cheese börek, a cheese börek, or cheese pastries, depending on context
• English needs an article more often than Turkish does

This is very normal, and learners usually have to get used to understanding definiteness from context rather than from an article.