Je ne suis pas sûr que ~ – “I'm not sure that ___” in French | MotiTan Dictionary

Meaning

I'm not sure that ___.

When to use it

Expresses uncertainty about a stated proposition. It can cast doubt on a report or rumor and is followed by the subjunctive in French.

Example dialogue

Je ne suis pas sûr que ce soit vrai.

I'm not sure that's true.

Je n'en sais rien.

I have no idea.