Aydınlatma sisteminde far testi yapılıyor.

to do

Breakdown of Aydınlatma sisteminde far testi yapılıyor.

• far testi: a headlamp test
• aydınlatma sistemi: a vehicle lighting system

Questions & Answers about Aydınlatma sisteminde far testi yapılıyor.

What is the basic structure of Aydınlatma sisteminde far testi yapılıyor?

It breaks down like this:

• aydınlatma = lighting / illumination
• sistemi = its system / the system (here, part of a noun phrase: lighting system)
• sisteminde = in its system / in the system
• far = headlight
• testi = test (here, headlight test)
• yapılıyor = is being done / is being carried out

So the sentence structure is basically:

[Location] + [thing being done] + [verb]

That is very normal in Turkish.

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Why is it aydınlatma sisteminde and not just aydınlatma sistemde?

Because aydınlatma sistemi is a compound noun meaning lighting system.

In Turkish, many noun compounds are built like this:

• first noun: bare form
• second noun: usually takes the 3rd person possessive ending

So:

• aydınlatma sistemi = lighting system
  literally something like lighting-its-system

Then, when you add the locative ending -de / -da to a noun that already has that possessive ending, Turkish usually inserts a buffer n:

• sistemi
  • -de → sisteminde

So:

• aydınlatma sisteminde = in the lighting system

This -n- is very common after possessive endings before case endings.

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Why does sistemi seem to mean both system and ?