Don’t be so cocksure that he will succeed.

不要那么信他会成功。

I feel confident that we will win.

我信我们将胜利。

I’m sure there’s a jinx on this car.

我信这辆轿车带来厄运。

I had an intuitive conviction that there was something unsound in him.

直觉使我信他有问题。

I'm sure there's a perfectly rational explanation.

我信有完全合理的解释。

I'm convinced there is something fishy going on.

我信有可疑的事在发。

She felt sure that their friendship would last.

信他们的友谊会日久天长。

I rarely flinch from a fight when I'm sure of myself.

信自己时，我少怕斗争。

Are you sure it’s the real thing , not just infatuation?

你信这是真爱,而不是一时的?

Are you sure you’re physically tough enough for this job?

你信你有足够的体力胜任这份工作？

He was too certain of her love to be deceived by such talk.

他信的爱, 因而不会被这种谣言所欺骗。

I bet it will rain soon!

我信马上要下雨!

By convincing me that no good could come of staying, he persuaded me to leave.

通过让我信留下来没有好处，而说服我离开了。

Don't tell me without a doubt this dumbfound luck has all run out.

别信无疑地告诉我那种令人目瞪口呆的运气都用光了。

He was convinced of her innocence.

他信是无辜的。

The senator is confident of reelection.

参议员信能重新获选。

I’m sure he thinks I stole the money—he kept making innuendoes about my “new-found-wealth”.

我信他一定以为钱是我偷的,因为他不断含沙射影地说我“新近发了财”。

We are certain of success.

我们信会成功。

I’m not sure about Johnson—we’d better keep tabs on him until we know we can trust him.

我对约翰逊不太放心——我们最好先观察他一段时间，直到我们信可以信任他。

She is convinced the company will make a big profit, but then she does tend to see things through rose-tinted spectacles.

信公司一定会获得丰厚利润，不过一向都过于乐观。