Not by itself. Beginning is a verb form or gerund (noun). As a participle, it can form an adverbial phrase.
"The kitchen will close early beginning on the first of June."
In this sentence, 'when' is an adverb; 'you begin when'.
The word until can BEGIN an adverb clause, but it is not an adverb by itself. The word until is a preposition or conjunction.
subordinating conjunction
No. Began is a verb, the past tense of to begin.
Not necessarily. Adverb phrases act as adverbs, but they do not have to begin with or even include adverbs. For example, the adverbs now or currently could be replaced by the prepositional phrase "at this time."Adverb phrases that include adverbs may include more than one adverb or adjective (e.g. almost as quickly, only recently, surprisingly well).
adverbadjective
Prepositional phrases that begin with after are adverb phrases: e.g. "The nebula formed after a supernova" meaning the nebula formed afterward.
The adverb youthfully begins with the letters YOU. It is apparently the only one.
Began is a verb. It's the past tense of begin.
T is not an adverb, it's a letter in the English alphabet. Tenderly, truthfully, triumphantly, and typically are a few adverbs that begin with the letter T.
Prepositional phrases that begin with after are adverb phrases: e.g. "The nebula formed after a supernova" meaning the nebula formed afterward.
When will you begin college? (You will begin college when?)when - adverb, modifies the verb 'will begin';will - auxiliary verb;you - personal pronoun, subject of the sentence;begin - main verb;college - noun, direct object of the verb 'will begin'.