如果你想用英语表达“很凶”，你可以说 very fierce, very mean, very nasty, very aggressive, very wicked, very terrible 等。

这些词的来源都是来自于英语中对于“凶”的描述。比如，fierce 指的是极具攻击性的，mean 指的是卑鄙的，nasty 指的是恶劣的，aggressive 指的是好斗的，wicked 指的是邪恶的，terrible 指的是可怕的。

下面是一些例句：

The tiger was very fierce, so I was afraid to go near it.
He is a very mean person, always trying to hurt others.
The weather was very nasty today, with strong winds and heavy rain.
She has a very aggressive personapty, always trying to dominate others.
The witch in the story was very wicked, always causing trouble for others.
The monster in the movie was very terrible, with sharp teeth and claws.

翻译：

老虎非常凶，所以我不敢靠近它。
他是一个很卑鄙的人，总是想要伤害别人。
今天的天气非常糟糕，刮着强风，下着大雨。
她的性格非常好斗，总是想要主宰别人。
故事里的女巫非常邪恶，总是惹麻烦。
电影里的怪物非常可怕，有着锋利的牙齿和爪子。