Learn Hardcore Turkish: Ziyafet evde düzenleniyor. - The feast is being organized at home.

The verb düzenleniyor is passive, meaning the action happens to the banquet rather than the banquet doing anything. In Turkish you form the passive by adding the suffix -lEn (or -n after a vowel) to the verb root, then attach the tense/aspect endings. Here it is:
• düzen (root “arrange/organize”)
• + len (passive)
• + iyor (present continuous)
= düzenleniyor “is being organized.”

What tense/aspect does düzenleniyor express?

The suffix -iyor marks the present continuous (progressive) aspect. With the passive suffix, düzenleniyor literally means “is being organized” – an ongoing action right now.

What case does the -de in evde show, and what does it mean?

The suffix -de on evde is the locative case, indicating “at” or “in.” So:
• ev (home)
• + de (locative)
= evde “at home.”

Why doesn’t ziyafet have any case ending or an article?

In Turkish, the subject stays in the unmarked nominative case, so there’s no ending on ziyafet. Turkish also has no indefinite article (a/an) and doesn’t require a definite article (the). If you wanted to target a specific banquet as an object, you’d use the accusative -i (e.g. ziyafeti), but passive verbs keep their subject in the nominative.

What is the typical word order here, and is it flexible?

The default pattern is Subject (Ziyafet) + Adverbial of place (Evde) + Verb (düzenleniyor). Turkish is generally S-O-V, but adverbials can move around for emphasis. The verb usually stays at the end.

Can you break düzenleniyor into its parts?

Sure:
• düzen (root “organize”)
• + len (passive suffix, from -lEn)
• + iyor (present continuous)
No personal ending is added in the passive.

How would you say “We are organizing the banquet at home” in active voice?

You need an accusative on “banquet” and a personal ending on the verb:
Ziyafeti evde düzenliyoruz.
• ziyafeti (banquet + accusative)
• evde (at home)
• düzenliyoruz (we organize/are organizing)