be confident about 還是of

　　是be confident of。意思：確信。

　　1、be confident in sb/doing sth對某人充滿信心/做某事。

　　2、be confident about dong sth/sth對某事/某事充滿信心。

　　confident of確信。

　　be confident in信任。

　　be confident of對……事有信心，確信。

　　confident about相信。

　　例句：

　　1、be confident of doing.對某事有信心。

　　2、We are confident of our success.我們確信能獲得成功。

　　3、He was confident of achieving his aim.他確信會達到目標。

　　擴展資料：

　　1、I have every reason to be confident of our victory.

　　我有充分的理由堅信勝利是屬于我們的。

　　2、I agree with you,save that you should be confident of success.

　　我同意你的意見，只是你應該有信心成功。

　　3、We are confident of a successful outcome.

　　我們相信會有圓滿的結果。

　　4、We are confident of our victory.

　　我們對勝利充滿信心。

　　5、I think I am fully confident of his success.

　　我想我完全肯定他能成功。