Uncertain Future The Defiantpanda Leak And What It Means For You Pa Defiant Remix Tube

I wonder if i can change the word 'that' coming after 'uncertain' to 'if' or 'whether'. To stay means to stop, to prevent from moving. To stay someone's hand means to prevent that person from carrying out an.

Defiant

I'm uncertain of/about my future.

He's uncertain of/ about his knowledge.

Hi guys, i would like to know what is the difference between uncertain of and uncertain about, is there any rule? The structure that comes after certain or. The following sentence is from an english textbook in korea.