Ön değerlendirme eğitim takvimine eklendi.

Because eklendi is passive, while ekledi is active.

• ekledi = he/she/it added
• eklendi = it was added

The verb comes from eklemek = to add.

Here the structure is:

• ekle- = verb stem
• -n- / -l- type passive form → eklen- = be added
• -di = past tense

So eklendi means was added.

This is very common in formal or administrative Turkish, where English might also use passive structures like was added, was approved, was announced, etc.

The grammatical subject is Ön değerlendirme.

Even though the action is passive, Turkish still has a subject: the thing that was added.

So:

• Ön değerlendirme = the thing being talked about
• eğitim takvimine = where it was added
• eklendi = was added

In other words, Ön değerlendirme is not doing the action; it is the thing affected by the action.

Because it is in the dative case, which often means to or into in English.

The idea is:

• takvim = calendar / schedule
• takvimi = its calendar / the calendar in a noun compound
• takvimine = to its calendar / to the calendar

In this sentence, eğitim takvimine means to the training schedule/calendar.

The ending is not just a simple -e because takvimi already contains a suffix as part of the noun compound. After that kind of ending, Turkish inserts -n- before the case ending:

• takvimi
  • -e
• becomes takvimine

This -n- is a buffer consonant.

Because eğitim takvimi is a noun compound.

In Turkish, combinations like training schedule, school bus, city center, etc. are often formed with this pattern:

• first noun: bare form
• second noun: takes a special compound ending

So:

• eğitim = training / education
• takvim = calendar / schedule
• eğitim takvimi = training schedule / education calendar

This is a normal Turkish compound pattern. Then, because the whole phrase needs the dative case, the ending goes on the second word:

• eğitim takvimi → eğitim takvimine

So Turkish is not saying education to schedule. It is saying to the training schedule.

It is a noun phrase meaning something like pre-evaluation, preliminary assessment, or initial evaluation.

Breakdown:

• ön = front, prior, preliminary, pre-
• değerlendirme = evaluation / assessment

So ön değerlendirme works as a single idea: preliminary evaluation.

It functions as a noun in the sentence, not as an adjective plus a separate unrelated noun.

Because it is the subject of the sentence and is in the basic form.

In Turkish, subjects often appear with no special ending. This is sometimes called the nominative form.

So:

• Ön değerlendirme = subject
• no case ending needed

By contrast, eğitim takvimine has a dative ending because it shows direction or destination: to the training schedule.

Turkish often puts the verb at the end of the sentence.

So the pattern here is:

• Ön değerlendirme = subject
• eğitim takvimine = destination / target
• eklendi = verb

A very common Turkish order is:

Subject + other information + verb

English usually prefers:

Subject + verb + other information

So English might say:

• The preliminary evaluation was added to the training schedule.

Turkish naturally says:

• Preliminary evaluation + to the training schedule + was added

This is one of the most important word-order differences between Turkish and English.

It can mean either, depending on context.

eğitim is a broad word that can refer to:

• education
• training
• instruction

So eğitim takvimi could be translated as:

• training schedule
• education calendar
• course schedule

In many practical contexts, training schedule sounds the most natural in English, but the exact best translation depends on what kind of institution or program is being discussed.

Yes, it can mean both, depending on context.

The basic meaning of takvim is calendar, but in many administrative or organizational contexts it can refer to a planned timetable or schedule.

So eğitim takvimi might refer to:

• a calendar of training dates
• a training timetable
• a training schedule

This is why a literal word-for-word translation is not always the most natural final translation.

Yes, in some contexts.

• was added = more neutral, formal
• got added = more conversational

Since the Turkish sentence is formal and administrative in tone, was added is usually the best match.

So:

• Ön değerlendirme eğitim takvimine eklendi.
• most naturally: The preliminary evaluation was added to the training schedule.

Using got added would not be wrong in casual English, but it usually sounds less formal than the Turkish original.

Yes, it sounds fairly formal and administrative.

Clues:

• the passive verb eklendi
• the noun phrase ön değerlendirme
• the compound eğitim takvimi

This kind of sentence would fit well in:

• announcements
• institutional emails
• academic or corporate communication
• website updates
• official schedules

In casual everyday speech, a speaker might choose a less formal wording, but this sentence is perfectly natural in formal written Turkish.

Yes, but then you would need to say who added it.

For example:

• Ön değerlendirmeyi eğitim takvimine eklediler. = They added the preliminary evaluation to the training schedule.
• Yönetim ön değerlendirmeyi eğitim takvimine ekledi. = The administration added the preliminary evaluation to the training schedule.

In the original sentence, the passive is useful because the doer is either unknown, unimportant, or deliberately left unstated. That is very common in Turkish formal style.