我不知道为什么会这样——看起来很不幸。

I wonder how that came about - it seems quite unfortunate.

youdao

是吗？我没有意识到。我不知道为什么会这样。

Really? I didn't realize it. I don't know why I became like this.

youdao

我不知道为什么会这样做，但我不能控制自己。

I'd no idea why I did that. I control myself.

youdao

我不知道为什么会这样做，但我不能控制自己。

I had no idea why I did that I couldn't control myself.

youdao

不知何故我们成了朋友，我绝不知道为什么会这样。

Somehow or other we became friends, I never knew just why it was.

youdao

我可以肯定地说，我不知道为什么有人会这样讲。

I'm sure I don't know why people say this kind of thing.

youdao

我可以肯定地说，我不知道为什么有人会这样讲。

I'm sure I don't know why people say this kind of thing.

youdao