【问】Owing to the large sums of money involved，it was then felt essential to direct these human and material resources into specific channels with clearly-defined objectives.

上句中的involved是作什么成分?

【答】 上句中的involved是the sums of money的后置定语。更详细的情形，请见concerned，navigable。

应当注意的是，involved作前置定语时和作后置定语时，其意义常常是不同的：

1. The problem involved is basically simple.

所涉及到的问题从根本上说是很简单的。

2. This is a very involved problem.

这是一个很复杂的问题。

3. He could not fully understand involved scholarly lectures.

他不能完全听懂复杂的学术报告。