A prepositional phrase.
On the mountain top is a preposition phrase, not a part of speech.
A prepositional phrase.
The phrase "will practice" is a verb (future tense).
They could be used as several different parts of speech. Typically the entire phrase acts as one part of speech... a noun phrase, a verb phrase, etc.
"In addition" is considered an adverbial phrase that is used to introduce new information or to add to what has already been said.
A phrase is never a part of speech, only a word.
Prepositional phrase
A prepositional phrase.
On the mountain top is a preposition phrase, not a part of speech.
That I am is a phrase, the individual words in the phrase are parts of speech. That -- demonstrative, determiner I -- pronoun am -- be verb
adverb phrase
verb
A prepositional phrase.
A prepositional phrase.
Noun
A phrase like 'under a vow' is not a part of speech. It is a phrase that is made up of parts of speech. under is a preposition a is an article vow is a noun