Present participle as adverb: In "making prolonged periods of waiting feel especially arduous," the present participle "making" is used as an adverb, indicating the direct result of long waiting periods, enhancing the coherence and complexity of the sentence.
Gerund phrase: "coming to grips with" functions as a gerund phrase, acting as a noun and expressing the process of children understanding a complex concept, demonstrating the depth and complexity of the sentence.
Adjective as modifier: In "developmental trait," "developmental" serves as an adjective modifying "trait," clearly explaining the nature of the "trait," making the sentence more descriptive and accurate.
Noun phrases as subject and object: Using noun phrases such as "lack of patience" and "attention spans" as subject and object, these phrases provide specific information points, increasing the richness of information and complexity of expression in the sentence.