Gerund as subject: In the sentence "Keeping a painting often stems from its cultural significance," "keeping" as a gerund serves as the subject, showcasing complex grammar structure.
Noun as adjective: In the phrase "tangible connection," "tangible" is a noun turned into an adjective to modify "connection," demonstrating flexible use of grammar.
Participle as postpositional modifier: In the sentence "certain artworks serve as pivotal symbols, encapsulating the spirit of an era," "encapsulating" is a present participle serving as a postpositional modifier, adding complexity to the sentence.
Noun phrase as object: In "educational tools to initiate discussions," "educational tools" is a compound noun phrase serving as the object, indicating a good understanding of grammar.