英语翻译：他为她辩护

这个必须要看具体的语境.因为辩护一词,在中文里可以很广泛,但在英文里是很具体的.
① 如果“他”是律师,那么defend就可以了.As an attorney of law,he defends for her in court.或者直接,He defends on her behavor.还可以用plead或appeal这个词,上诉,陈情和辩护,这里基本同义.
② 否则,可以这么说：He is arguing in favor of her.或者He argues on her behavior.在或者He speaks in defense of her.
至于时态,过去还是现在,抑或是进行式,视具体而定.

He defended her