信心满满的英文

是神态，但不能算成语。

这个句子：前一段 The young clerk expressd full of confidence年轻的职员信心满满后面一句 he was qualified for that demanding 他有资格处理这种需求。后面的句子主语和宾语都有，说明不缺成分，所以是同位语。confidence。例如：He is expressing such a fact that he has never done this kind of thing.

confidencen.信心；信任；秘密adj.骗得信任的；欺诈的I have every confidence in you... 我完全相信你。This has contributed to the lack of confidence in the police... 这导致了大家对警方缺乏信任。confident为信任的形容词，用法为：be confident in sb be confident of sth

主语 the young clerk， 谓语， expressed， full of confidence，副词that he was qualified for that demanding 宾语从句。这个年轻的员工充满信心的表示对那个苛求的（工作），他完全合格句子应该差了一个名词做从句的宾语，demanding只能做形容词或 动词ing 形式