He studies hard for the test.
Meaning: This means he is working very hard to learn the material for the test.
Choice of Words: Studies is a verb that means to read and learn information in order to prepare for a test or exam. Hard is an adverb that means with a lot of effort and concentration. When you put them together, "Studies hard for the test" means he is putting in a lot of effort and concentration to learn the information for the test.
Alternative Expressions
Related Expressions