Avukat randevuyu yarına almak istiyor.

Because it is the definite direct object of the sentence.

In Turkish, when a noun is a specific thing being acted on, it usually takes the accusative ending. Here, the thing being moved/rescheduled is the appointment, so:

• randevu = appointment
• randevuyu = the appointment as a direct object

The ending here is -(y)i, which changes by vowel harmony. Since randevu ends in a vowel, Turkish adds a buffer letter y before the accusative ending:

• randevu + yu → randevuyu

So randevuyu almak means something like to take/move the appointment.

Because yarına has the dative ending and means to tomorrow.

• yarın = tomorrow
• yarına = to tomorrow / for tomorrow

In this sentence, the appointment is being moved to a new time, so Turkish uses the dative:

• yarına almak = to move something to tomorrow

This is very natural in Turkish. English often uses just for tomorrow or to tomorrow, but Turkish marks that destination more clearly with -a / -e.

Yes, but here it is being used in a more idiomatic way.

The basic meaning of almak is to take or to get, but in combinations like this, it can mean:

• to move
• to reschedule
• to put onto another date/time

So randevuyu yarına almak means something like:

• to move the appointment to tomorrow
• to reschedule the appointment for tomorrow

This is one of those cases where the literal meaning of a verb expands in common usage.

This is a very common Turkish pattern:

• verb infinitive + istemek = to want to do something

Here:

• almak = to take / to move
• istiyor = wants

So:

• almak istiyor = wants to take/move
• randevuyu yarına almak istiyor = wants to move the appointment to tomorrow

Notice that Turkish uses the infinitive of the main verb before istemek.

In Turkish, the -iyor form is often used not only for actions happening right now, but also for:

• present situations
• current intentions
• ongoing states
• things someone wants or plans

So istiyor literally looks like is wanting, but in normal English we usually translate it as wants.

• istiyor = wants / is wanting

That is completely normal Turkish usage.

Turkish does not have articles like English a and the.

So:

• avukat can mean a lawyer or the lawyer
• randevu can mean an appointment or the appointment, depending on context

However, Turkish often shows definiteness in other ways. In this sentence, randevuyu is clearly definite because of the accusative ending.

If you wanted to emphasize a lawyer, you could say:

• bir avukat = a lawyer

But in many sentences, Turkish simply leaves that unstated.

Yes. Avukat is the subject here.

A few clues show that:

• it has no case ending
• it comes first in the sentence
• the verb istiyor is singular, which matches a singular subject

So the structure is:

• Avukat = subject
• randevuyu = object
• yarına almak = infinitive phrase
• istiyor = main verb

In natural English, avukat could be translated as:

• the lawyer
• a lawyer
• the attorney

depending on context.

The sentence follows a very typical Turkish word order:

Subject + Object + Time/Destination phrase + Verb + Main finite verb

More simply, Turkish often puts the main verb at the end:

• Avukat = the lawyer
• randevuyu = the appointment
• yarına almak = to move to tomorrow
• istiyor = wants

So Turkish prefers:

• Avukat randevuyu yarına almak istiyor.

rather than an English-style order.

That said, Turkish word order can be changed for emphasis. This sentence is just a neutral, natural version.

Because Turkish often expresses ideas through common verb combinations rather than one exact equivalent of an English verb.

Here, yarına almak means to move to tomorrow. It does not necessarily focus on the idea of postponing as strongly as ertelemek does.

Compare:

• randevuyu yarına almak = to move the appointment to tomorrow
• randevuyu ertelemek = to postpone the appointment

So yarına almak focuses more on the new date, while ertelemek focuses more on the idea of delay/postponement.

Using yarın by itself would not fit as well with almak in this structure.

• yarın = tomorrow
• yarına almak = move to tomorrow

The dative ending -a helps show that tomorrow is the target date. Without it, the phrase would sound incomplete or unnatural in this meaning.

So for this sentence, yarına is the correct form.

They follow Turkish sound rules, especially vowel harmony and buffer consonants.

1. randevuyu

The accusative ending is basically -(y)i, but it changes form depending on the last vowel of the word:

• ı, i, u, ü

Since randevu ends with the vowel u, the ending becomes -yu.

2. yarına

The dative ending is -a / -e.

Since yarın has a back vowel, the ending becomes -a:

• yarın + a = yarına

3. istiyor

The present continuous ending is often taught as -iyor, but it changes too:

• -ıyor / -iyor / -uyor / -üyor

The form depends on vowel harmony. The verb istemek becomes istiyor in this tense.

So these forms are not random; they follow regular Turkish patterns.