Δεν μου αρέσουν οι μεγάλες διαφημίσεις στην αγαπημένη μου εκπομπή.

In Greek, the verb αρέσω works the opposite way from English to like.

• Literally, αρέσω means to be pleasing (to someone).
• So the thing liked is the subject, and the person who likes is in the indirect object (genitive) with a pronoun like μου (to me), σου (to you), etc.

In this sentence:

• οι μεγάλες διαφημίσεις = the subject (the big commercials)
• αρέσουν = 3rd person plural form of αρέσω
• μου = to me

So Δεν μου αρέσουν οι μεγάλες διαφημίσεις literally means The big commercials are not pleasing to me, which corresponds to I don’t like the big commercials.

A form like Δεν αρέσω τις μεγάλες διαφημίσεις is ungrammatical in Greek. αρέσω is not used with a direct object like English like.

The subject is οι μεγάλες διαφημίσεις.

We can see this because:

• The verb is αρέσουν (3rd person plural).
• The noun phrase οι μεγάλες διαφημίσεις is also plural.
• The pronoun μου (to me) is not the subject; it is an indirect object.

So the structure is:

• Δεν = not
• μου = to me
• αρέσουν = are pleasing
• οι μεγάλες διαφημίσεις = the big commercials (subject)

The verb must agree in number with its subject.

• Subject: οι μεγάλες διαφημίσεις = plural (the big commercials)
• Therefore, verb: αρέσουν (3rd person plural of αρέσω)

If the subject were singular, we would use αρέσει:

• Δεν μου αρέσει η μεγάλη διαφήμιση.
  I don’t like the big commercial (singular).

μου here is not a subject; it is a weak (clitic) genitive pronoun that functions as an indirect object, meaning to me.

• μου = to me (here: I am the experiencer of liking/disliking)
• It corresponds to me in The commercials are not pleasing to me.

Greek uses the genitive case pronouns this way with αρέσω:

• μου αρέσει = I like it (it is pleasing to me)
• σου αρέσει = you like it (it is pleasing to you)
• του αρέσει = he likes it (it is pleasing to him)
• της αρέσει = she likes it (it is pleasing to her)
• μας αρέσει = we like it
• σας αρέσει = you (plural/formal) like it
• τους αρέσει = they like it

Greek has two common negative particles: δεν and μη(ν), and they are used in different contexts.

• δεν is used with indicative verb forms (normal statements and questions about facts):

  • Δεν μου αρέσουν οι διαφημίσεις.
    I don’t like the commercials.

• μη(ν) is mainly used:

  • with imperatives: Μην μιλάς! (Don’t talk!)
  • with certain subjunctive forms: να μην πάω (that I not go).

Since αρέσουν here is just a normal (indicative) verb form, the correct negative is δεν:
Δεν μου αρέσουν...

στην is a contraction of σε + την:

• σε = in / at / on / to (general preposition)
• την = the (feminine singular accusative article)
• σε την → στην

Greek almost always contracts σε + article:

• σε τον → στον
• σε την → στην
• σε το → στο
• σε τις → στις, etc.

So στην αγαπημένη μου εκπομπή literally is in the favourite show of mine → in my favourite show.

Both orders are grammatically correct:

1. στην αγαπημένη μου εκπομπή
2. στην αγαπημένη εκπομπή μου

The usual pattern in modern Greek is:

• article + adjective + noun + possessive pronoun

Example:

• η αγαπημένη εκπομπή μου = my favourite show

But when the adjective and noun are in a prepositional phrase like στην ... εκπομπή, it is very common to put the possessive pronoun immediately after the adjective:

• στην αγαπημένη μου εκπομπή
  (literally in the favorite of-mine show)

Nuance:

• στην αγαπημένη μου εκπομπή sounds very natural and slightly more flowing in this specific phrase.
• στην αγαπημένη εκπομπή μου is also fine, and in most contexts there is no real difference in meaning.

Yes. This is gender, number, and case agreement.

• εκπομπή (show/program) is a feminine noun.
• In στην αγαπημένη μου εκπομπή, the noun is:
  • feminine
  • singular
  • accusative (after σε → στην)

The adjective αγαπημένη agrees with εκπομπή:

• αγαπημένη: fem. singular accusative
• εκπομπή: fem. singular accusative

So we get:

• η αγαπημένη εκπομπή (nominative)
• την αγαπημένη εκπομπή (accusative → after στην)

μεγάλες is the feminine plural form of μεγάλος (big / large / long).

• διαφημίσεις (commercials/ads) is feminine plural.
• So the adjective agrees: μεγάλες διαφημίσεις.

Meaning nuance:

• Literally: big advertisements.
• In the context of TV/radio, μεγάλες διαφημίσεις often implies:
  • long commercials (long in duration)
  • or sometimes big in the sense of flashy/large-scale campaigns.

Many speakers might also say:

• πολλές διαφημίσεις = many commercials
• μεγάλα διαφημιστικά διαλείμματα = long commercial breaks

But μεγάλες διαφημίσεις in this sentence is natural and will usually be understood as long / big commercials.

No, that is incorrect, because the verb does not agree with the subject.

• οι μεγάλες διαφημίσεις = plural subject
• so the verb must be αρέσουν (plural), not αρέσει (singular).

Correct options:

• Δεν μου αρέσουν οι μεγάλες διαφημίσεις. ✅
• Δεν μου αρέσει η μεγάλη διαφήμιση. ✅
  (I don’t like the big commercial – singular)

Weak possessive pronouns like μου, σου, του, της, μας, σας, τους usually come:

• after the noun: η εκπομπή μου (my show)
• or after the adjective in the pattern adjective + pronoun + noun when the noun phrase is already determined by an article or preposition:

Here:

• στην αγαπημένη μου εκπομπή
  • στην already contains the article την
  • αγαπημένη = adjective
  • μου = possessive pronoun
  • εκπομπή = noun

So the position αγαπημένη μου εκπομπή is a very natural ordering of adjective + possessive + noun under a preposition + article.

Yes, that is grammatically correct.

Greek word order is relatively flexible. Both give the same meaning:

• Δεν μου αρέσουν οι μεγάλες διαφημίσεις στην αγαπημένη μου εκπομπή.
• Οι μεγάλες διαφημίσεις στην αγαπημένη μου εκπομπή δεν μου αρέσουν.

The difference is mostly about emphasis:

• Starting with Δεν μου αρέσουν emphasizes my dislike.
• Starting with Οι μεγάλες διαφημίσεις... emphasizes the commercials themselves as the topic, and then you state that you don’t like them.