Question

Dressed in his doctor's uniform, he went in to see her. 本句中为什么要用Dressed,而不能用Dressing?

我能否看成（After）Dressingin his doctor's uniform, he went in to see her.

Answer 1

肯定不能看成是AFTER 即介词加动词的ING形式 在这句话中 dressed明显用的是非谓语 它的主语和后面一句话的主语是一致的 所以dressed前面省略了 he was 为什么用dressed 而不用dressing 是因为某人的身体被打扮 ，而不是它的身体主动给自己打扮 所以要用 sb be dressed in

Answer 2

因为 dress 当及物动词用时 宾语 必须是人
本句 是过去分词 作状语 与主语 是被动关系 故用过去分词
=after he was dressed in his doctor's uniform, he went in to see her.
如果用动名词 作介词宾语
应该是after being dressed in his doctor's uniform, he went in to see her.
或者是after dressing himself in his doctor's uniform, he went in to see her.
当然也可以 去掉after
用现在分词 作状语dressing himself in his doctor's uniform, he went in to see her.
如果强调动作在先 也可用现在分词的完成时
having dressed himself in his doctor's uniform, he went in to see her.
不过本句 是相继发生 最好不用现在分词的完成时

综上 用过去分词 作状语 最简练

Answer 3

简单的说，这是一种句型，dressed in 后置定语作整个句子的状语