Hi !!
The team has much work to do before the big game.
BEFORE is a preposition.
means "earlier than"
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explanation
When before is a subordinating conjunction, it links two clauses together.
ex : The team has much work to do <em>before they play the game.</em>
<em>-</em>
<em>☺☺☺</em>
"C family always helps" an adverbial phrase exists if there are two or more words that act as an adverb in terms of clarification. "Family" and "always" clarifies "helps".