1. I go to the ballet class once a week.
2. I go to ballet class once a week.
(Is #2 grammatcal? What is the difference between #1 and #2?)
1 is referring to a specific class; 2 is referring to the activity.
2 is more commonly used.
2. I go to ballet class once a week.
(Is #2 grammatcal? What is the difference between #1 and #2?)
2 is more commonly used.