Переклад - Турецька-Англійська - Kesin olarak bilmiyorum.

Hi Lenab,

I think your alternative sentence sounds better. What about making them switch places?

Done.

how is "I don't know certainly"?

As I see it, it means that the person doesn't know, and that is certain. I think maybe there should be a stress on certainly. "Certainly I don't know." ?? what do you think??

Well in that case it may be:
"I don't certainly know"

That is: Certainly, it's not me who knows!

I've been consulting my dictionary again, and I found a new way to put it.