stop的過去式和過去分詞是什么

　　例句：

　　We had to stop every few miles.

　　我們每走幾英里就得停一停。

　　She brought the car to a stop.

　　她停住汽車。

　　He was headed for the bus stop.

　　他朝公交車站走去。

　　They bellowed at her to stop.

　　他們吼叫著讓她停下。

　　We stop growing at maturity.

　　我們在成熟后就停止成長了。