【分句(1)】Blaming the permissive 1960s 【主语】//is 【系动词】//nothing【 表语】// new 【定语】. 

参考译文：责备放纵的六十年代并不是什么新鲜事。

【分句(2)】This【 主语】// is not 【系动词】// yet 【状语】// another criticism【 表语】//against the decline in education【定语】. 

参考译文：但这次算不上是对教育衰落的又一场批判。

 【完整句子】Blaming the permissive 1960s is nothing new, but this is not yet another criticism against the decline in education.

参考译文：责备放纵的六十年代并不是什么新鲜事，但这算不上是对教育衰落的又一场批判。

备注：this指代前面动名词短语整句话内容。

Mr. McWhorter's academic specialty is language history and change, and he sees the gradual disappearance of "whom", for example, to be natural and no more regrettable than the loss of the case-endings of Old English.

参考译文：麦克沃特先生的学术专长是语言史和语言变化。例如，他认为"whom"一词的逐渐消失是很自然的，象古英语中词格结尾的消失一样不令人惋惜。

备注:比较结构 no more+形容词+than... (象…一样不…)