是be confident of。意思：确信。例句：1、be confident of doing.对某事有信心。2、We are confident of our success.我们确信能获得成功。3、He was confident of achieving his aim.他确信会达到目标。

扩展资料：
1、I have every reason to be confident of our victory.
我有充分的理由坚信胜利是属于我们的。
2、I agree with you,save that you should be confident of success.
我同意你的意见，只是你应该有信心成功。
3、We are confident of a successful outcome.
我们相信会有圆满的结果。
4、We are confident of our victory.
我们对胜利充满信心。
5、I think I am fully confident of his success.
我想我完全肯定他能成功。