Reason for に particle in sentence instead of の


I have come across sentence and I understand what its trying to say, but I
don't understand why に is used with 特別. I was really expecting a の particle
instead to modify related noun phrase 旅のサポート

Why wouldn't it be の? Why is it に?

> 今回は特別 **に** 旅のサポートをしてくれる方も来てるんです
>
> My translation: This time, there are even people coming who will provide
> special trip support!




> 「今回{こんかい}は特別{とくべつ}（ ）旅{たび}のサポートをしてくれる方{かた}も来{き}てるんです。」

What particles can we correctly use in the blank in the sentence above?

The answer is 「な」 and 「に」. I am afraid that 「の」 is not a natural-sounding
choice here.

「特別 **な** 」 functions **adjectivally** to modify nouns only. In this sentence,
it can modify either 「旅」 or 「サポート」.

「特別 **に** 」 functions **adverbially** to modify verbs and adjectives. In this
particular sentence, it can modify either 「してくれる」 or 「来てる」.

The author/speaker's choice is 「に」, which means that s/he wanted to use 「特別に」
adverbially. S/he wanted to say 「特別にサポートしてくれる」 or 「特別に来てる（んです）」. Which one it
is, it is difficult to tell without further context, but I will add that
either interpretation would be natural here.




> 「今回{こんかい}は特別{とくべつ}（ ）旅{たび}のサポートをしてくれる方{かた}も来{き}てるんです。」

What particles can we correctly use in the blank in the sentence above?

The answer is 「な」 and 「に」. I am afraid that 「の」 is not a natural-sounding
choice here.

「特別 **な** 」 functions **adjectivally** to modify nouns only. In this sentence,
it can modify either 「旅」 or 「サポート」.

「特別 **に** 」 functions **adverbially** to modify verbs and adjectives. In this
particular sentence, it can modify either 「してくれる」 or 「来てる」.

The author/speaker's choice is 「に」, which means that s/he wanted to use 「特別に」
adverbially. S/he wanted to say 「特別にサポートしてくれる」 or 「特別に来てる（んです）」. Which one it
is, it is difficult to tell without further context, but I will add that
either interpretation would be natural here.

