I cant believe you did that!

我真不敢相信你会那样做。

youdao

I cant believe you did this.

真不敢相信你会做出这类事变。

youdao

I cant believe he hit you!

我不敢相信他打了你！

youdao

Oh boy! You cant believe the trouble I had today.

咳，你真不会相信今天我有多倒霉。

youdao

Oh boy! You cant believe the trouble I had today.

咳，你真不会相信今天我有多倒霉。

youdao