correct use of "only"
- I only go to the grocery store on Wednesdays.
Ideally, as I would have it --but I understand this is quite personal-- this should mean "On that particular day, I don't do whatever else has been talked about or is understood, I just go to the grocery store.".
- I go only to the grocery store on Wednesdays.
On Wednesdays I go to the grocery store but I go nowhere else or I don't go to any other store, depending on the context.
- I go to the grocery store only on Wednesdays.
Given any other day than wednesday I do not go to the grocery store, Wednesday is the only day.