he is the person to whom you ought to a

he is the person to whom you ought to ahe is the person to whom you ought to address the request.的句子成分划分，以及to whom 在定语从句中的成分，

he is the person是主句，to whom you ought to address the request是定语从句。to实际上是address the request to sb.中的介词，定语从句中引导词为which或whom时可以将to从固定搭配中移动到引导词前，以示句子没有缺成分（误导）。

同问。。。