She was afraid of going mad.

她担心变疯。

《柯林斯英汉双解大词典》

I think the cat's going mad.

我认为那只猫发疯了。

youdao

I feel certain that I am going mad again.

我感到我一定又要发狂了。

youdao

He says,But because I'm a generous mad scientist, before I torture you,what I'm going to do is give you amnesia.

但因为我是宽厚的疯狂科学家，在折磨你之前，我会先让你失忆。

耶鲁公开课 - 死亡课程节选

Mom and dad are going to be very mad at me.

我爸妈会对我大发雷霆的。

I'm sure 实战 - SpeakingMax英语口语达人

And later on when God gets mad Right, and it's all going to flood.

接着上帝发怒了,好，它们就变成了洪水。

耶鲁公开课 - 旧约导论课程节选

The commentator was going mad, but all Donal could see was the door of the church.

NEWYORKER: Bullfighting

It took a year for the markets to fully recover and the NYSE market implemented a host of fire-breaks to prevent the computers going mad.

FORBES: Fat Fingers And Asteroid Events

It was assumed that he was going mad, although sceptics, suspicious to the last, said that he was just feigning madness to avoid facing new trials.

ECONOMIST: Erich Mielke