Here's why it might be a misunderstanding and what it could be referring to:
* Adverbial phrases: These are phrases that function as adverbs, modifying verbs, adjectives, or other adverbs. They typically answer questions like "how?", "when?", "where?", "why?", "to what extent?". For example, "in the morning," "very quickly," "with great enthusiasm".
* Objects: These are nouns or pronouns that receive the action of a verb. For example, "The dog chased the ball."
Since adverbs modify verbs, adjectives, or other adverbs, and objects receive the action of a verb, they have distinct functions in a sentence.
Possible interpretations of "adverbial objectives":
1. A misunderstanding: The speaker might have combined "adverbial" and "object" by mistake.
2. A specific context: The term might be used in a particular educational resource or teaching method.
If you can provide more context about where you encountered this term, I might be able to give a more accurate explanation.