我对你有信心—我知道你会干好的。

I have great faith in you—I know you'll do well.

《牛津词典》

你必须相信其他人对你有信心。

You must be confident for others to have confidence in you.

youdao

你有信心解决掉的困难和挑战。

A challenge you're confident you have the skills to handle.

youdao

Why do you have confidence putting it in contact with one of the most important organs of your body?

为什么你对它有信心,让它接触,你身上最重要的器官

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You will be more confident.

你会变得更加有信心。

Make sure 课堂 - SpeakingMax英语口语达人

You're confident you can reply to all of these?

你似乎很有信心能回应这些问题？

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