Yes, it is an adverb of indefinite time. Depending on the time scale, "soon" can vary tremendously in actual time.
An adverb of time. "Soon" does not describe how frequently something happens as a habit. "Soon" means "a short time in the future" which is a description of time.
Soon is the adverb, leave is a verb. So in "I leave soon" the adverb soon is modifying the verb leave.
The adverb is 'soon' as it describes when.
biscuit
"Soon" is an adverb as it qualifies a verb, e.g. Soon he will run his race.
No, it is a pair of adverbs. The adverb soon modifies the adverb after, which will modify a verb.
The adverb in the sentence is "soon", which describes when the flowers began to bloom.
adverb
Soon is an adverb; be is a verb.
the word soon is an adverb
The comparative form of the adverb soon is SOONER: She arrived SOONER than the other guests.
Adjective