You need some adverb knowledge to bail you out of this one. An adverb is a word used to modify or qualify a verb, an adjective, or another adverb. Sometimes he does his homework. Ordinarily, you need an adverb to modify it. At other times, the word after the auxiliary verb modifies the verb and not the subject.
Phrases also act as adverbs to qualify verbs.
Early in the 20th century, Edward Stratemeyer created a character called Tom Swift who appeared in a popular series of books for young readers. If you don't know Tom Swift, you might know the Hardy Boys, the Bobbsey Twins, and Nancy Drew whom Stratemeyer also created. The writers of the series tended to use many adverbs. These constructions became the trademark of the Tom Swift style and were dubbed Tom Swifties. However, sometimes these Tom Swifties created an unintended comic effect.