Hi !!
A lazy boy hardly studies. ► AFFIRMATIVE
A lazy boy never study. ► NEGATIVE.CORRECT
sorry, I was wrong on the first post. NEVER doesn't accept any other negation even "hardly" or "scarcely" ....
When you use "hardly" you can't put another negation
you can't say
a lazy boy doesn't hardly study but ►
a lazy boy doesn't study.
OR
a lazy boy hardly study.
sorry for the misunderstanding
☺☺☺