•I'm having doubts about his ability to do the job.我对他是否能胜任此项工作还有一些疑问。

•If there's any doubt about the rocket's engines, we ought to cancel the launch.如果对火箭引擎还存有任何疑虑，我们都应该取消此次发射。

•The prosecution has to establish his guilt UK beyond (reasonable) doubt] US beyond a (reasonable) doubt.此次起诉必须证明他所犯的罪行证据确凿。

•This latest scandal has raised doubts about his suitability for the post.最近的这件丑闻让人们对他是否称职表示怀疑。

•[+ (that)] I never had any doubt (that) you would win.我从未怀疑你会获胜。

•He's the most attractive man in the building, no doubt about that/it.毫无疑问他是大楼里最有吸引力的男人。

•We will, no doubt, discuss these issues again at the next meeting.毫无疑问，我们在下次会议上还要讨论这些问题。

•No doubt you'll want to unpack and have a rest before dinner.你肯定想在吃晚饭前先把行李收拾出来且休息一下。

•Witnesses have cast doubt on the suspect's innocence.证人们对疑犯是否清白表示怀疑。

•The future of the stadium is in doubt because of a lack of money.由于缺少资金，该体育馆能否建成还不确定。

•She is without (a) doubt the best student I have ever taught.毫无疑问她是我教过最优秀的学生。

•I doubt whether/if I can finish the work on time.我怀疑自己能否按时完成这项工作。

•[+ that] They had begun to doubt that it could be completed in time.他们开始怀疑能否及时完工。

•He may come back tomorrow with the money, but I very much doubt it.也许明天他会把钱带回来，但我对此深表怀疑。

•I don't doubt his abilities.我并不怀疑他的能力。

•He's never lied to me before, so I have no reason to doubt his word.以前他从未对我说过谎，因此我没有理由怀疑他说的话。