I'm a vastly different person now.

我现在已判若两人了。

《牛津词典》

He was a different person after that spike went through his brain.

自从那根长钉穿过他的大脑之后他就完全变了一个人。

youdao

Different brain, different person.

不同的大脑就是不同的人。

youdao

So if you play cat and mouse with someone, you change between different kinds of behavior when dealing with another person.

VOA: special.2009.09.27

So--does the personality theory has to say Ohoo, different personality, that kid no longer ? exists, that person died.

所以，根据人格论,我们难道说，人格不同了，那个孩子,不存在了，那个人死了。

耶鲁公开课 - 死亡课程节选

And by the end of it,and indeed, let's say somewhere around 600 or 700, I'm a completely different person,as we might put it.

最后的最后，大概是600或700岁的时候，我完全变成了另一个人。

耶鲁公开课 - 死亡课程节选

But Mourinho insisted he was a very different person one from the portrayed by the media.

CNN: 'I hate my social life,' says Mourinho

"I'd been worried he was becoming a different person, and he did become one, " Mina told me.

CNN: When mom earns more, it's tough on dad

"The lead hasn't got that much smaller but it's a different person in second now, " added Button.

BBC: Button eager to stop Red Bull run