brave本来就是形容词。brave：adj.勇敢的;无畏的;需要勇气的;表现勇敢的;新颖的;崭新的。v.勇敢面对;冒(风险);经受(困难)。n.勇敢的人;美洲印第安武士。

相关介绍：

Greg lost his brave battle against cancer two years ago.

格雷格在与癌症进行了勇敢的`斗争之后于两年前去世。

He was not brave enough to report the loss of the documents.

他没有勇气报告丢失了文件。

The White House tried to put a brave face on the job figures.

白宫面对就业数字强颜欢笑。

He felt disappointed but he tried to put on a brave face

他感到很失望，但还竭力强装欢笑。

Michael kept up a brave front both to the world and in his home

迈克尔对外界和家人都表现出一副勇敢的样子。