1. Comparative structures: The answer uses comparative language to contrast modern and older buildings, such as "Modern skyscrapers...Older tall buildings, on the other hand..." which shows the ability to compare and contrast effectively.
2. Present simple tense: The answer consistently uses the present simple tense (e.g., "tend to use," "might feature," "include") to describe general facts and characteristics, which is appropriate for this kind of descriptive answer.
3. Relative clauses: The use of relative clauses like "which gives them a sleek, futuristic appearance" and "that really make them stand out" adds complexity and detail to the sentences.
4. Listing and examples: The answer uses listing ("glass and steel," "brick or stone") and gives specific examples ("twisting towers or rooftop gardens") to support the main points, which is a good strategy for IELTS Speaking Part 3.