stop的过去式和过去分词是什么

例句：

We had to stop every few miles.

我们每走几英里就得停一停。

She brought the car to a stop.

她停住汽车。

He was headed for the bus stop.

他朝公交车站走去。

They bellowed at her to stop.

他们吼叫着让她停下。

We stop growing at maturity.

我们在成熟后就停止成长了。