1. Present participle used as a post-positive modifier: In "These culinary traditions are gradually losing their prominence," "gradually losing" as a present participle phrase functions as a post-positive modifier, adding complexity to the sentence.
2. Relative clause: In "with the emphasis shifting towards the essence of family reunions," a relative clause is used to modify the preceding content, increasing the complexity of the sentence structure.
3. Emphatic sentence pattern: In "It appears that the modern interpretation of festivals places greater importance," "It appears that" is used as the beginning of an emphatic sentence pattern, demonstrating a higher level of grammatical complexity.
4. Use of the comparative degree: In "places greater importance," the comparative degree is used to express a contrast in modern festival concepts, enhancing the depth and accuracy of expression.