"We hid Lola's birthday present under the bed" is a <u>prepositional phrase</u>, it modifies a noun or a verb in the sentence with a preposition. In this case the phrase is an adverbial phrase because the preposition "under" is modifying the verb "Hid". If you ask Where the present was hidden? Was hidden <u>under </u> the bed.
"The runner leading the pack is our friend Kirsten" is a noun phrase, this phrase has a Noun, which is "Kirsten" but we can only identified who is Kirsten because of the rest of the prhase. Our friend kirsten <u>is the runner leading the pack. </u>
"The construction workers are building a new house" is a verb phrase, it is composed of the verb to be + ing form (are + building), and gives the idea of continuity. Because of the verbal structure used, is posible to identify that the workers are doing something in a cotinous way instead of a finished action or a reported action, for example.
