She went crazy and started to think everyone was trying to kill her.她精神失常了，开始认为每个人都想要杀她。

I must be going crazy. I can't find my car keys anywhere.我一定是快疯了，哪儿也找不到车钥匙了。

He kept honking his horn, and I thought I would go (completely) crazy if he didn't stop.他一直在按车喇叭，我想他再不停下来我会（彻底）疯掉的。

We were just talking when he suddenly went crazy and started screaming and breaking things.我们正在谈话，他突然发起疯来，开始大声尖叫、乱摔东西。

Everybody at the party was dancing and basically going crazy.派对上每个人都在手舞足蹈，基本上到了疯狂的地步。

The crowd went crazy [=became very excited] when the team won the championship.这支队夺得冠军，人群异常兴奋。