ask的过去式和过去分词

ask双语例句：

There's another thing I'd like to ask you.

还有一件事我想问你。

May I ask why you took that decision?

我可否问一下你为什么要作出那样的`决定？

Some people think it is impolite to ask someone's age.

有些人认为询问别人的年龄是不礼貌的。

You can ask for a chemical analysis of your tap water.

你可以要求给你的自来水做化学分析。

He asked to be put under police protection.

他请求警方保护。