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to cast a shadow over sth
01
to create a sense of negativity and hopelessness regarding a particular thing or situation
![to [cast] a (shadow|cloud) (over|on) {sth} definition and meaning](https://cdn.langeek.co/photo/46469/original/?type=jpeg "to [cast] a (shadow|cloud) (over|on) {sth} definition and meaning")
What is the origin of the idiom "cast a shadow over something" and when to use it?
The idiom "cast a shadow over something" is rooted in the idea that when an object or obstacle blocks the light, it creaThe negative review of the film cast a shadow on the opening weekend's box office results.tes a shadow or cloud, which can obscure visibility and cast a dark or negative influence. It is used to describe a situation where something, such as an event or action, has a detrimental or negative impact on a particular circumstance, often making it gloomy or causing concerns.
例
During a lunar eclipse, Earth passes between the sun and the moon, casting a shadow on the moon.
Personal failures, disconnect from friends, and academic disappointments casted a cloud on my sense of purpose.
he sudden economic downturn cast a cloud over the prospects of the company's expansion plans.
Even on the sunniest of days, the old man's surly demeanor seemed to cast a shadow over the neighborhood.
The threat of war was impending, casting a shadow over diplomatic negotiations.
