There is no reason not to ask them if they have done this in the past.

你完全有理由询问他们过去是否有过此类行为。

youdao

If they have done half the things they have ascribed to their characters, their spectacles must have steamed up.

故事中那些角色干过的事，别说全部，如果作者本人能亲身体验一半，估计场面就要喷火了。

youdao

We allow ample opportunity for the recipient to respond, and if they have done nothing wrong they have no reason to be concerned.

收信人有充足的机会做出反应，并且如果他们确实没有做过什么，就没有必要担心。

youdao

"So if they wanted to have a biopsy done, they had to arrive at the hospital with cash in their hand.

VOA: standard.2010.02.02

Have they done well? If so, you would say, "Well, they've been investing money over a number of different years.

怎么来评价他做的怎么样,你可能会想,他把钱投资在,不止一年的期间里

耶鲁公开课 - 金融市场课程节选

The same would be true if they were to have a mammogram done."

VOA: standard.2010.02.02

Firms face higher fines if they have done nothing than if they can show they have a compliant social media policy, said Bockius.

FORBES: Financial Advisors Turn to Tech for Compliant Social Media Activity

You can ask them how regularly they work with their peers in this fashion, and if they have done this with other clients successfully.

FORBES: Can Consultants Save Us Money By Doing More Work Remotely?

But the best way you are going to find out if they have the ability to commit whole-heartedly to something is to discover if they have done so in the past.

FORBES: Move up http://i.forbesimg.com t Move down