on Monday/s

[Natalia]

I wonder if I can say, for example, 1) I go to school on Monday, Tuesday, Wednesday... instead of  2) I go to school on Mondays, Tuesdays, Wednesdays..?

I've seen these two versions in some English books and wonder which of them is more accurate to say.

[Daniel]

Doesn't matter.

"On Monday" might mean "this [or some specific] Monday" or in general.
"On Mondays" is always general.

"We go to class on Monday(s)."
"We are leaving for our trip on Monday."

[Natalia]

Thank you.

[Natalia]

However, I would like to know which of the two forms you would be more likely to use when talking about a repetitive process?

[Daniel]

If I'm emphasizing that it's general, I'd probably use the -s form. But either is fine.

I think if I used the singular, it would be to imply that most weeks are like this week: "On Monday, I'll go to class [and also in future weeks on Mondays]". But we often talk like that, because we're interested in the present.

I can't think of any circumstances where I couldn't use the singular form if I wanted to.

[Natalia]

OK thank you for your opinion. I'll ask you one more question about this topic if you don't mind.
if I, for example, say: I play football on Mondays, the question to this sentence would be What days do you play football?

[Daniel]

"What days" suggests it may be more than one. It would be more natural to ask "What day" if it is only Monday(s), even if it happens every week.

[Natalia]

OK, I'll remember that.