"Be confident in yourself" 或者 "Have confidence in yourself" 都是表达自信的常用说法。

这个表达的来源可以追溯到拉丁语,"confidentia" 是 "信任" 的意思。因此,"confidence" 在英语中指的就是对自己的信心和信任。

下面是一些使用这个表达的例句:

"You can do it! Just be confident in yourself." (你能做到的!要相信自己。)
"I know you're nervous, but have confidence in yourself. You've got this." (我知道你很紧张,但要相信自己。你会做好的。)
"Bepeve in yourself and your abipties. Be confident in yourself and you'll succeed." (相信自己和自己的能力。相信自己,你会成功的。)