The phrase "by going on the tour" is a prepositional phrase as indicated by the use of "by" that begins the phrase.
Example sentence:
The superstar earned millions by going on the tour through twelve major cities.
Or...
By going on the tour through twelve major cities, the superstar earned millions.
Yes, it would be an adverbial prepositional phrase referring to a verb in the main clause, giving a result or consequence of the action.
No. Stadium is a noun, the object of the preposition "to." However, the prepositional phrase "to the stadium" is an adverb phrase.
The adverb is 'tomorrow' because it is describing the verb phrase, 'are going' (are going when?).
An adverb phrase is two or more words that act as an adverb. It would be modified by an adverb or another adverb phrase.
adverb phrase
Adverb Phrase
No. But the prepositional phrase "in it" is an adverb phrase.
adverb
It is an adverb phrase (tells where).
An adverb phrase is two or more words that act as an adverb. It would be modified by an adverb or another adverb phrase.
adverb phrase
Adverb phrase
It is a prepositional phrase functioning as an adverb. Hint: A word or phrase that answers the question 'Where?' is functioning as an adverb (I think).