Here's why:
* Adverbial phrases modify verbs, adjectives, or other adverbs. They provide information about how, when, where, why, or to what extent something happens. They are not used to connect clauses.
* Conjunctions are words that connect words, phrases, or clauses. They show the relationship between these elements. Examples include:
* Coordinating conjunctions: and, but, or, nor, for, so, yet
* Subordinating conjunctions: because, although, while, since, if, unless, etc.
Example:
* Adverbial phrase: *quickly and efficiently*
* Function: modifies the verb "worked"
* Conjunction: none used
Instead of conjunctions, adverbial phrases use prepositions, adverbs, or other words to create their meaning.
Here are some examples of adverbial phrases:
* With great enthusiasm (preposition)
* Very quickly (adverb)
* Before the meeting (preposition)
* In the morning (preposition)
* Because of the rain (subordinating conjunction introducing a clause)
Let me know if you have any more questions!