1.Infinitive phrase as a subject: "To prevent modern libraries from shutting down" uses an infinitive phrase as the subject of the sentence, demonstrating a complex grammatical structure.
2.Gerund as a subject: "increasing community engagement is crucial" uses a gerund as the subject, adding variety and depth to the sentence structure.
3.Parallel structure: "book clubs, author talks, and cultural gatherings" uses parallel structure to list different types of events, enhancing the clarity and rhythm of the sentence.
4.Present participle as an adverbial: "By fostering a welcoming atmosphere" uses a present participle phrase as an adverbial to describe the action, showcasing advanced grammar usage.