纠正你的不规范的说法或用法：
当as - = although-/ though-,引导让步状语从句时,从句的语序是,表语或宾语部分必须提到句首：这叫“前置”,不是倒装.
倒装：指 “谓语动词或谓语部分的助动词提到了主语的前面,即正常的 主语在前,谓语在后的语序出现了（部分）颠倒.
而前置是,提前/前置部分+ 主语+ 谓语,即主、谓部分没有颠倒,依然 "主语在前,谓语在后”.
如：虽然他是个孩子,但他已闻名世界了.
Although he is a child,he's well known all over the world.
= Though he is a child,he's...
= Child though he is,he's.( Note:in this case,"a " must be left out here when fronting happens.)
= Child as he is,he's.(Note:The same is true of "as-",that is," a" must be left out,too.)
We can't say:A child though/as he is,he's.
We can't say,either:Child is though/ as he,he's.
Nor can we say:Child though/as is he,he's.
