but this does not matter,for,as he has often remarked,one is never to old to learn然后为什么前后加标点
问题描述：
but this does not matter,for,as he has often remarked,one is never to old to learn
然后为什么前后加标点
答
但是这不是问题，因为，正如他经常谈论的，活到老学到老。
FOR引导原因从句，前后的标点是为了分割不同的句子，避免歧义,for 是属于one is...这个部分的。
答
但是这不要紧,因为,正如他经常说,一个人永远不活到老,学到老
答
as he has often remarked 看出插入成分,前后用逗号
for因为
全句意思：这并不重要,因为,正如他经常说的,活到老,学到老!
答
因为