be sure of success 确信成功
be sure of oneself 自信
feel confident about 感到自信
have faith in oneself 相信自己
trust one's own judgment 相信自己的判断
1. She is always be sure of herself when giving presentations.
她在做演示时总是非常自信。
2. To be sure of oneself, you need to prepare well for the exam.
要对自己有信心，你需要为考试做好充分准备。
3. He didn't be sure of himself at first, but gained confidence over time.
起初他不太自信，但随着时间的推移逐渐建立了信心。
A: Why are you so calm before the interview?
A：面试前你为什么这么冷静？
B: I am be sure of myself because I have prepared thoroughly.
B：我很自信，因为我做了充分的准备。
1) 自信；对自己有信心
2) 确信自己的判断或能力
3) 表现出不犹豫或怀疑的态度
1. 自信；对自己有信心
e.g.
She is be sure of herself in her professional abilities.
她对自己的专业能力很有信心。
phrase
1. To have confidence in one's own abilities or judgment.
Synonym: be confident, be self-assured