But this does not matter,for,as he has often remarked,one is never too old to learn for在这里是什么用法, 为什么用了两个"," 为什么for前后都用了“，”
人气：362 ℃ 时间：2020-06-04 17:08:11
解答
这句话里as he has often remarked是插入语,补充说明,所以as he has often remarked前后都要加逗号隔开. 原话可以改为：But this does not matter,for one is never too old to learn. 但这没关系,因为正如他常说的那样,活到老学到老.
