"Along the beach" and "with their children" are the two prepositional phrases in this sentence, <span>A </span>prepositional phrase<span> is a group of words that lacks both a verb and a subject but is a coherent part of speech. A common construction has the preposition followed by an article and a noun. So "along the beach", "under the table" and "inside the house" are all examples of prepositional phrases.</span>
