Read the sentence. You can delight any toddler by blowing bubbles on a sunny afternoon. How is the phrase "blowing bubbles" used in the sentence? It is a gerund phrase used as the object of the preposition by. It is an infinitive phrase used as an adverb modifying the phrase "on a sunny afternoon." It is a participle phrase modifying the word delight. It is a gerund phrase that is the subject of the sentence.
