我不知道发生了什么事，但我可以猜出来。

I don't know what passed, but I can guess.

youdao

可是……我却不知道到底发生了什么事。

But... I don't know what's happening.

youdao

我完全不知道发生了些什么事。

I was in entire ignorance of what had happened.

youdao

我不知道到底发生了什么事。现在我还很迷惑。

I don't know what has happened exactly. Now I'm still in a daze.

youdao

我不知道她身上发生了什么事，让她成了一个跛子。

She became a cripple, and I don't know what became of her.

youdao

我不知道他们之间发生了什么事。

I don't know what passed between them.

youdao

我不知道他发生了什么事。

I have no idea what has happened to him.

youdao

我只是不知道究竟发生了什么事了！

I just don't know whats going on anymore!

youdao

我不知道那儿发生了什么事。

I don't know what's the matter there.

youdao

我不知道他发生了什么事。

I don't know what happened to him.

youdao

我不知道他发生了什么事。

I don't know what happened to him.

youdao