有信心做某事翻译成英文是:have confidence to do sth.例句:I have forgotten what I have learned, but I have confidence to learn it well. 学过的东西(英语)我全忘了,但我有信心很快学好。满意请采纳,谢谢!
have confidence to do sth.
I got faith in this case
have confidence in doing sth