是你杀的

you killed [them]

→ 是
phrase Rare #17,097
you killed [them] 是 emphasizes that you were the person who did the killing; the object is understood from context.
CH: 警察问:“那个人是你杀的吗?”
EN: The police asked, “Did you kill that person?”

人当然不是你杀的

Of course you didn't kill the person.

— 母亲 (2009)

所以是你杀的

So you’re the one who killed them.

— 孤胆特工 (2010)

重点是人就是你杀的

The point is, you're the one who killed him.

— 母亲 (2009)

即使真的是你杀的

Even if you really were the one who killed them.

— 母亲 (2009)

这事儿虽然可以就这样过去如果过了没几天那男人被杀的话老婆难道是你杀的吗

We could let this go, but if that man is killed just a few days later, honey, are you the one who killed him?

— 分手的决心 (2022)

迈克尔卡车旁的人是你杀的吗

Michael, did you kill the person by the truck?

— 巴克劳 (2019)

那些女人都是你杀的

You killed all those women.

— 杀人回忆 (2003)

是你杀的吗

Did you kill them?

— 母亲 (2009)