宾补是to do，例如：

1、He caught hold of her wrists so she couldn't get away.他抓住她的手腕，使她无法挣脱。

2、He caught hold of her arm as she tried to push past him.她试图从他身边挤过去时，他一把抓住了她的手臂。

3、All that money for two hours' work ─ what's the catch?干了两小时的活就给那么多钱——这里面有什么鬼