I have asked this question in ELL site, but there were not much reply, and so I decided to ask the same question here. Though I will change the question a little bit to exactly what I need more and to stop you from repeating the same answer that I already got from ELL site.
Here is the link for my question in ELL
Times Life tells you how to kick-start a party soccer style as the FIFA World Cup 2014, in Brazil, gets underway.
— The Times of India
I understand the meaning of this sentence, but I was curious to know that why there was no in before the bold part of the quoted sentence.
One answer in ELL site suggests that soccer style is by itself acting as an adverb. Hence there is no need for any preposition. Fine with me, but I am wondering how to decide which compound words I will use as an adverb and which I won't.