i like going swimming是現(xiàn)在進行時。
swimming
n. 游泳；目眩
adj. 游泳的；游泳用的；善于游泳的；暈眩的
v. 游泳；漂浮；旋轉(zhuǎn)（swim的ing形式）
例句：
Do you like to go swimming?
你喜歡去游泳嗎？
I go swimming twice a week.
我每星期游泳兩次。