杞人忧天的英文：
[Literal Meaning]
man from Qi Kingdom/worry/sky
The man of Qi who was haunted by the fear that the sky might fall.

[解释]
形容不必要的、缺乏根据的忧虑和担心。

[Explanation]
uncalled-for worry

[例子]
你这简直就是杞人忧天，他学习那么好怎么会通不过考试呢？

[Example]
You are actually grossly overblown. He is so good at his study, so why can't he pass the exam?

[英文等价词]
to cross a bridge before one comes to it
meet trouble halfway

Fear is often greater than the danger
杞人忧天

unnecessary worry;neurotic worry;The man of Chi worried in case the sky should fall
杞人忧天

Groundless worries or anxiety
杞人忧天

Don't cross the Bridge till you get to it
不要杞人忧天

Don't cross a Bridge till you come to it
勿杞人忧天;船到桥头自然直

He just met trouble halfway.
他不过是杞人忧天。

You're also too much of a worry wart.
你有些杞人忧天哦。

My fear seemed well-founded. A few weeks before my due date, Mother lapsed into a deep coma.
我并非杞人忧天。在预产期的前几周，母亲就陷入深度昏迷之中。