释义：

have no doubt 没错，毋庸置疑

doubt 表示疑心，疑惑，have no doubt 表示“没有疑心”。可以单独使用 I have no doubt, 也可以用 have no doubt that 主语+动词形态。

例句：

You're absolutely right. I have no doubt.
你说的没错，我深信不疑。
I have no doubt you'll do well.
你肯定做得很好。
I have no doubt that you're a good doctor.
我知道你是个出色的医生。

对话：

A: They have no doubt Sarah will become their manager.
他们确信莎拉会成为他们的经理。
B: Do they think she is a good person to work for?
他们觉得她适合做这份工作吗？