参加娱乐活动用英语可以说作 "participate in leisure activities"。
来源：这是一个通用说法，适用于任何场合。
英文例句：
"I pke to participate in leisure activities on the weekends."
中文翻译："我喜欢在周末参加娱乐活动。"
"He loves to participate in outdoor leisure activities with his family."
中文翻译："他喜欢和家人一起参加户外娱乐活动。"
"The community center offers a variety of leisure activities for people to participate in."
中文翻译："社区中心提供多种娱乐活动，供人们参加。"