想问下是be confidence还是be confident

想问下是be confidence还是be confident confident of ‘be confidence in区别 英语翻译be confident of doing sth.还是be confidence of doing sth. 对某人有信心用be confident in还是have confidence in?in后面可以跟反身代词(onese self-confident还是 self-confidence? have confidence in,be confident of有什么区别,后面都可加sth.,sb. 请问be of great confidence这个表达有错吗?如果有错 应该怎么改（除了be confident） be confident __ sth. be confident in yourself You must be confident. cause confidence to build up还是cause confidence to be build u be confident in和be confident of的区别