fight with 与…并肩作战
fight aganist 同…进行斗争
fight for 为…而战
fight with 也可以表示 fight against 之意
如 Have you been fighting with (against)your brother again?
你又和你兄弟打架了吗?
＿＿摘自星火英语,高考必备字典上的