Do not hesitate to ask.

不要犹豫问问题。

I want to ask you a favour.

我想请你帮个忙。

I have two questions to ask.

我有两个问题要问。

I'm going to ask Sir for a transfer.

我要去找教练申请转会。

I have to ask for three days' leave.

我得请三天假。

Oh, it's very nice of you to ask me.

哦，你真好，邀请我。

Better to ask the way than go astray.

问路总比迷路好。

Decide the questions you want to ask.

决定你们想问的问题。

He is going to ask you some questions.

他会问你一些问题。

I have plenty of questions to ask him.

我有很多问题要问他。