The sentence, "On the last night of camp, we laid our sleeping bags under the trees" there are phrases used for every part of the line.
Step-by-step explanation:
If the underlined phrase of this sentence is:
On the last night - It will be an adverb phrase. On - preposition to a noun - last night.
Under the trees - It is also an adverb phrase as Under - preposition and trees is a noun.
This sentence is can be used as a exercise for learning grammar of adverb phrases.
*What are adverbs? A word that modifies or creates an impact on the verb or adjective used in a sentence. In this sentence, to talk about where they laid their sleeping bags - under the trees - becomes a modification and reasoning.