Little tom is an orphan .＿＿＿＿＿,he has to make a living by himself .A. A child as he isB. Child as he isC. Child as is heD. A child though he is

步骤 1：理解句子结构
句子的主干是 "he has to make a living by himself"，前面的部分是插入语，用来补充说明 "Little Tom" 的情况。
步骤 2：分析插入语
插入语 "Little Tom is an orphan" 需要转换成倒装结构，以符合英语语法中的强调结构。倒装结构通常将表语（如 "child"）置于句首。
步骤 3：选择正确的倒装结构
在英语中，"as" 引导的倒装结构通常用于表示让步，结构为 "名词/形容词/副词 + as + 主语 + 谓语"。因此，"Child as he is" 是正确的倒装结构。