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。