1.merry sb：及物动词,表示“嫁给某人,与某人结婚”
例：will you marry him?
2.get\be married (to):不及物,表示“与某人结婚了”,是一种已经完成并且正在持续的状态
例：He is married to my little sister.他和我妹妹结婚了.