我不敢肯定

I can't be sure

→ 我
phrase Rare #30,842
I can't be sure Expresses cautious uncertainty; literally, “I don't dare be certain.”
CH: 我不敢肯定他明天会来。
EN: I can't be sure he'll come tomorrow.

哦,我不敢肯定

Oh, I’m not sure.

— 东京物语 (1953)

至少我不敢肯定

At least, I can't say for sure.

— 月升王国 (2012)

我不敢肯定它喜不喜欢你

I'm not sure whether it likes you.

— 蓝白红三部曲之蓝 (1993)

我不敢肯定我不敢肯定

I'm not sure. I'm not sure.

— 伊莲娜 (2011)