第三人称单数为为punishes，现在分词为punishing，过去式和过去分词为punished，例如：

1.My parents used to punish me by not letting me watch TV.过去我父母常以不让我看电视来惩罚我。

2.He was punished for refusing to answer their questions.他拒不回答他们的问题，受到了惩罚。

3.The President has a punishing schedule for the next six months.总统今后六个月的工作日程十分繁忙。