关于部分倒装部分倒装的定义：部分倒装是指将谓语的一部分如助动词或情态动词倒装至主语之前.如果句中的没有谓语,就用助动词或

用于as引导的让步状语从句中.as引导的让步状语从句引起的倒装有以下几种形式：
1) 副词置于句首.如：
Much as I like it (＝Although I like it very much),I will not buy it．
前面的倒装结构可以替换成以although引导的让步状语从句.
2) 动词原形置于句首.如：
Wait as you may(＝Although you may wait),he will not see you．
3) 形容词或名词置于句首.如：
Proud as the nobles are (＝Although the nobles are proud),they are afraid to see me．
Child as he is (＝Although he is a child),he can tell right from wrong．
你给的句子就属于这个句型.

这个很特殊，这里面的as是虽然的意思，相当于although
有倒装，把Young 置于句首，原句是 Although he is young ，he knows a lot.
还有一点要注意的是 与原句最后一个单词关系很紧密的单词，倒装的时候要被省略
1.Although I like music very much ,…… very 被省略
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