He says "I don't have much tournament experience but I'm confident in my game."

VOA: special.2010.07.26

But I'm not so confident anymore that it's the wrong thing to say.

但我不能再肯定那是错误的。

耶鲁公开课 - 死亡课程节选

First of all, I'm very pleased when this happens, because I'm pretty confident that I can do this under duress, but I may not do it right every time.

首先,我非常乐意你们指出我的错误,因为虽然我对这些公式了如指掌,但我并不能保证每次都写对

耶鲁公开课 - 基础物理课程节选

I'm not sure who that will be but I'm confident that before the reality show craze ends, every profession, race and culture in the United States will get their 15 minutes of fame.

CNN: Rednecks' turn to shine?

We won't know where this sits in the canon of what I've done for another five years but I'm confident it will be up there though, in fact I know it will.

CNN: STORY HIGHLIGHTS

But I'm confident, as with all these things, we will find a way forward.

BBC: Childcare ratios: We will find way forward, says Cameron