1. 既可指人“勇敢的”“无畏的”，也指言行“需要勇气的”“表现勇敢的”。如：

Firefighters are brave in saving people from burning buildings. 消防队员很英勇，把人们从着火的房子里救出来。

His brave words are merely a pose. 他的勇敢的言词仅仅是做样子而已。

2. 比较以下句型：

你那样做真是很勇敢。

正：You were brave to do so.

正：It was brave of you to do so.

误：It was brave for you to do so.

他敢进入那燃烧的建筑，真是勇敢。

正：It was brave of him to enter the burning building.

正：He was brave to enter the burning building.

3. 作为动态形容词，有时可用于祈使句或进行时态（表示特定情况下的表现）。如：

Be brave! 勇敢些！

He is being brave. 他表现得很勇敢。