as作尽管,虽然 连词用的时候,句子倒装.规则是 adj/adv/n.(省略冠词）/v.放句首,后面用主语+谓语,如果动词已经提前倒装,用主语+情态动词或助动词.例如：Young as he is,he works like a veteran.Quickly as he is driving,we still trust him.Child as he was,he was able to work.以上句子可以用though替换,但不能用although.如用although不能倒装,即,Although he is young,he...Although he is drving quickly,we...