一般说“去游泳”就是go swimming 这里swim就要加ing,因为go 已经是动词，任意一个句子中不能出现两个谓语动词，要将swim变成动名词形式。
swimming ：n.游泳；游泳运动；v.游水；游泳
相关介绍
How often do you go swimming?
你多久去游泳一次？
People were swimming in the ocean despite the hurricane warning.
尽管有飓风警报，人们仍然在大海里游泳。
Which is better exercise ─ swimming or tennis?
游泳和网球，哪种运动比较好？
