I am curious whether 'on Sundays' and 'every Sunday' are interchangeable.
Can you think of any examples that prove they are not?
What about "He usually goes to church on Sundays' and 'he usually goes to church
every Sunday'?
"He does not go to church on Sundays' vs. "He does not go to church every Sunday"
Thanks!
Best Answer
They are not interchangeable.
"He goes to church on Sundays" would imply frequent Sunday church attendance, but "He goes to church every Sunday" would mean (almost) invariable Sunday church attendance.
"He goes to church on Sundays" might also mean that Sundays is the day he goes to church, as opposed to Saturday, without implying anything about the frequency of attendance.
"He does not go to church on Sundays" means that he almost never goes to church on any Sunday, while "He does not go to church every Sunday" means that there are some Sundays he doesn't go to church.