如果你想用英语表达“在夏天我经常去游泳”,可以说“I often go swimming in summer”或者“I frequently swim during the summer”. 若你想强调频率和习惯,还可以说“I usually swim during the summer season”或者“I am a frequent swimmer in summer”. 另外,如果你要询问别人是否喜欢游泳或一起去游泳,可以使用“How about going for a swim with me?”或“Do you enjoy swimming during the summer?”这样的表达方式。