crowd的名詞可數嗎

例句：

Try and push your way through the crowd.

試着從人羣中擠過去。

They had the advantage of playing before their home crowd.

他們有在主場觀衆面前比賽的優勢。

I had to fight my way through the milling crowd.

我不得不在涌動的人潮中擠出一條路來。

There was an air of expectancy among the waiting crowd.

等待的人羣有一種期盼的`心情。

She looked for him but couldn't see him in the crowd.

她在人羣裏找來找去，但沒看見他。

At the first sign of trouble, the crowd melted away.

人羣一看有麻煩，便漸漸散了。

An excited crowd of people gathered around her.

一羣激動的人聚集在她周圍。