Present participle as adverbial: "encouraging physical activity," Using present participle as adverbial indicates the functions of parks and sports centers, while making the sentence structure more dynamic and rich.
Adjective as postpositive attribute: "crucial in our increasingly sedentary lifestyle," Here the adjective is used as a postpositive attribute to modify the noun, increasing the amount of information and precision in the sentence.
Compound sentence: "Parks offer spaces for exercise and relaxation, while sports centers provide a range of activities," Using a compound sentence to contrast the different purposes of the two facilities enhances the logicality and completeness of the information in the sentence.
Present participle as result adverbial: "contributing positively to our physical and mental health," Using the present participle as a result adverbial expresses the positive impact of these facilities on health, adding coherence and depth to the sentence.