Ihave also witnessed a player reacting to his opponent蒺s intentional and illegal blocking by deliberately hitting him with the ball as hard as he could during the course of play.

　　分析主干：I have witnessed a player reacting

　　reacting 在句中是現在分詞，作賓語a player 的補語;by... hitting...是reacting 的方式狀語，hitting 作介詞by 的賓語。as hard as he could 是比較結構，表示 盡力 。

　　譯文：還有一次我看到過一個球員在比賽中因為對方的一個有意犯規阻擋，而故意使足了力氣把球砸向對方。