现在完成时态的被动结构。
driven
adj. 被动的，受到驱策的；有紧迫感的；（人）发愤图强的
v. 驾驶，开车（drive的过去分词）。
例句
She was driven primarily by profit.
她主要是受利益驱动的。
Economic system is driven by competition.
经济体制是由竞争驱动的。
However, I did begin to wonder what had driven me here.
然而，我确实开始思考是什么驱使我来到这里。
