"throw a shadow" is a correct and usable phrase in written English.
It means to cast a shadow or to create a shadow by blocking light. This phrase is often used figuratively to describe a situation or action that creates a negative or ominous feeling. Example: The looming skyscrapers threw a shadow over the small town, symbolizing the encroaching urbanization and loss of traditional values.
States across the country are confronted with significant budget problems, as questions about the economy, and the housing crisis in particular, continue to throw a shadow upon statehouses.
To expand his horizon, and to throw a shadow over his protagonist's, Russo has added a companion narrative to run alongside Lucy's.
Then he'd say, casually, "Oh, were you setting up here?" Just before every kick, Parcells positioned himself between the sun and the ball, to throw a shadow over the proceedings.
Or will the children invent a game in which my name is? Or will the full moon throw a shadow over the gravel of the drive that was like me?
Secrets of the past throw a shadow over the present; it's a gothic whydunnit of revenge and retribution (one critic described it as The Mill on the Floss meets Psycho).
The project has drawn fierce opposition from many environmentalists and some community leaders, who describe it as a concrete gash across green Oahu that will blight pristine coastlines and farmland at the western end and throw a shadow over city streets in Honolulu.
The plane comes in low, throwing a shadow in the shape of a giant cross, rushing over the ground.
Hitchens's esophageal cancer inevitably throws a shadow over this spirited, provocative collection, which shows his extraordinary wit and range.
Green's fumble that let in Dempsey's shot on 40 minutes threw a shadow over it all.
The brim of Antonin Proust's hat throws a shadow over one shrewd eye, glittering in the dark.
The esophageal cancer that killed Hitchens last December throws a shadow over this provocative collection, one of the Book Review's 10 Best Books of 2011.
