I teach English in South Korea.
One text book says that only the following sentence is grammatically right: "Highly skilled athletes feel passionate about their successful involvement in sport"
But the next sentence is grammatically wrong: "Highly skilled athletes feel passionately about their successful involvement in sport"
I am bothered by the curiosity.. Could you explain why the latter sentence is wrong?
Here is the context.
Values are defined a a person's beliefs about what they consider important in life. For example, an athlete who values commitment, responsibility and health will tend to develop daily rituals and long-term habits that promote their high-quality sports performance and good health. Highly skilled athletes -and their coaches- feel passionate about their successful involvement in sport.