I didn't know that I could ask a professor to put a book on reserve.

我不知道还可以叫老师将一本书放在保留书目里。

youdao

The young couple, who returned my lost wallet, left before I could ask for their names.

那对年轻夫妇把我丢失的钱包还给了我，我还没来得及问他们的名字，他们就走了。

youdao

I wish I could ask them but I don't have time.

我真想能停下车来问问她们，可是我没有时间。

youdao

"I came here because I felt like there was nowhere else I could ask the questions that I wanted to ask.

VOA: standard.2010.05.12

So, I could ask any of you who have the courage to come forward and fight in my phalanx? Nobody?

所以,我斗胆请问,在座哪位有胆量上来,为我的方阵效力,没人吗

耶鲁公开课 - 古希腊历史简介课程节选

You could say, "May I ask a question?"

你可以说，“我能问你一个问题吗？”

I want to 课堂 - SpeakingMax英语口语达人

Now, I could ask these questions of young people in any country, on any continent.

WHITEHOUSE: First Lady Michelle Obama Addresses Young African Women Leaders | The White House

It's a challenge to come back as captain and the biggest accolade I could ask for.

BBC: Gough back as Yorkshire captain

Chancellor Merkel, if I could ask you, do you believe NATO was mistaken in getting involved militarily in Libya?

WHITEHOUSE: President Obama and Chancellor Merkel Press Conference