為什麽這裏用"Absorbed",而不用“Absorbing"呢？

如果壹定要用absorbing的話，句子就是：

Having absorbed himself in the computer games,the boy no longer put his heart into study.

或者：Absorbing himself in the computer games , the boy no longer put his heart into study.

我的兩句中，第壹句更符合英語的在非謂語動詞形式上的習慣用法。