Why is it ” I’m at work” but ” I’m in class”? Why does ” I’m in work” or “I’m at class” sound wrong grammatically?

Question

Why is it ” I’m at work” but ” I’m in class”? Why does ” I’m in work” or “I’m at class” sound wrong grammatically?

In: Other

Answer 1

“The correct preposition to use depends on the context.

We use “in class” when we are referring to being physically inside a classroom and participating in the activities that are taking place. For example, “I am in class right now.”

We use “at class” when we are referring to attending a class or being present at a specific class session. For example, “I will be at class tomorrow morning.”

So, both “in class” and “at class” are correct, but they are used in different contexts.”

-Stolen from Quora, thought it was a good answer.

That said, prepositions are fickle. “At work” is usually used because it implies there’s a workplace that you are at. Not all work takes place “in” anything, so it’s not so commonplace.