Why don't you ask him outright if it's true?

你为什么不直截了当地问他那是否属实？

《牛津词典》

I suggest you ask him some specific questions about his past.

我建议你问问他有关他的过去的一些具体问题。

《柯林斯英汉双解大词典》

If you ask him, he will help you.

假如你向他请求，他会帮助你。

《新英汉大辞典》

If a friend keeps asking you to do something you do not want to do, you might ask him to leave you alone or "stop bugging me."

VOA: special.2009.06.28

If you ask him if it's our people're gonna go, man will lose heart because of the theme of The Magnificent Ambersons that take you leave the way.

如果你问他我们人民将何去何从，人们会灰心丧气，因为《安巴逊家族》的,主题会让你无路可走。

麻省理工公开课 - 电影哲学课程节选

You put a child on one side of the mountains and you ask him to draw it, and a four- or five-year-old can do it easily, but then you ask him to draw it as it would appear from the other side and children find this extraordinarily difficult.

你让孩子在模型的一边,要求他把自己看到的三山模型画出来,四五岁的儿童便能够轻易做到,但是,如果你要求儿童画出,从模型另一边看过去的样子,儿童就会觉得非常困难

耶鲁公开课 - 心理学导论课程节选

If you ask him, he'll tell you he's been running since he was six.

CNN: Beating odds has different meaning for Iraqi disabled athletes

One time you ask him, it is the intelligence inquiry, and the other time is the prosecution inquiry.

NPR: Congress Finds Solution for Guantanamo Trials Elusive

You know, obviously, if he comes inside the residence and assaults you, can you ask him to go away?

CNN: 911 calls go unanswered in some Oregon counties