"Throw into" is a correct usage in written English.
It is usually used in the context of throwing something into a larger body of something. For example: "He threw the paper airplane into the lake."
This would throw into doubt its ability to raise capital.
Such flame instabilities throw into question the utility of ul for high pressure, very unstable, flames.
But it did throw into relief two niggling issues.
The omissions also throw into doubt the CPs dedication to complete, accurate crime reporting.
Only the cups printed with Moomin characters throw into question the thorough authenticity.
Weeden is a gunslinger, and he is not afraid to throw into coverage.
The pairings vividly throw into relief the strategies and techniques of each filmmaker.
But if it stands, it could throw into question untold numbers of other convictions.
This, says Christian Aid, could throw into reverse recent gains in reducing poverty.
They are not the sort of foods you'd want to throw into a recipe.
