1.Contrastive conjunction: "While social networks offer opportunities for making friends, they also come with drawbacks" uses the contrastive conjunction "while" to present two opposing ideas, demonstrating a complex sentence structure.
2.Noun phrase as subject: "The absence of face-to-face interaction" serves as the subject of the sentence, using a complex noun phrase to describe a situation, enhancing the depth and complexity of the expression.
3.Modal verb for possibility: "can result in relationships that feel shallow or superficial" uses the modal verb "can" to express possibility, adding nuance and flexibility to the sentence.
4.Cause and effect structure: "Excessive use of social media can contribute to addiction and a decrease in real-life social interactions" uses a cause and effect structure to explain the consequences of excessive social media use, showcasing advanced grammar skills.