I've got to stay calm.一定要冷静

stay calm保持镇静

In case of fire, you should always stay calm.

在发生火灾的时候，你应该总是保持镇定。

Try to stay calm, and whatever you do, don't nag.

保持冷静，不管做什么，都不要抱怨。

Now,there's no use panicking 慌张是没有帮助的

no use无用

All our persuasion was of no use.

我们所有的劝告都无用。

It's no use wasting any more words on him.

你跟他再多说也是没用的。

I'm afraid of your daughter hasn't come downstairs yet today.你女儿今天没有下来

afraid of害怕

The little girl is afraid of thunder and lightning.

这小女孩害怕雷声和闪电。

I've got a bad cold.我感冒很严重

get a cold伤风, 感冒

Father's got a cold so has taken to his bed.

父亲患了感冒，所以只好卧床休息。