I wanted to tell him the truth, but something held me back.

我本想告诉他真实情况，但又开不了口。

《牛津词典》

She feared to tell him the truth.

她不敢把真相告诉他。

《牛津词典》

She did not feel under any obligation to tell him the truth.

她觉得没有义务告诉他实情。

《牛津词典》

"I don't care what happens, I hope I am alive to really look into Obasanjo's face one day and ask him to tell the world the truth about what happened.

VOA: standard.2009.11.10

Right? I expect him to tell me the truth about the weather, right, and that's what I'm listening to him for.

对吧？，我希望他告诉我们天气的实况，我听他说话就是这个目的。

耶鲁公开课 - 文学理论导论课程节选

He wanted us to tell him the truth.

FORBES: Obama's Leadership Lesson: Hire People 'To Tell You The Truth'

In an email to his friends and family sent Thursday afternoon and reviewed by the Journal, Mr. Hamilton said the federal investigation triggered him to tell "the whole truth" for the first time, leading him to conclude that "this was the way forward" for him.

WSJ: Second Cyclist Accuses Lance Armstrong of Allegedly Using Banned Substances

HMOs after a nervous breakdown leaves him with a compulsion to tell the truth.

ECONOMIST: HMOs, the new nasties