1.Causative structure: "Residents in tourist-heavy cities often face significant challenges due to overcrowding" uses a causative structure to explain the reason behind the challenges, adding depth to the explanation.
2.Present participle as an adjective: "making it difficult for locals to enjoy their own surroundings" uses the present participle "making" as an adjective to describe the effect of congestion, enhancing the complexity of the sentence.
3.Contrastive conjunction: "Moreover, the sheer number of visitors can make it hard for residents to find peace and quiet" uses "Moreover" as a contrastive conjunction to introduce additional information, showcasing advanced grammar skills.
4.Present simple tense: "It sometimes feels as though the city caters more to tourists than its own inhabitants" uses the present simple tense to express a general truth or opinion, demonstrating a good command of tense usage.