Sr. Moose said:Hi. Your second example is correct. However, . . . we frequently say, 'I am in class.'
Cuchuflete's two requisites for the most part hold true for people who tend to talk to themselves. Real-life situations are different. For instance, if during a 10-minute break I find myself being pestered while headed to the restroom or making a bee-line for a cup of coffee or scurrying headlong toward a copy machine, I often say, "Sorry, can't stop, I'm in class."This is true if (1)one is in a class room, and (2) instruction is taking place.
I do. Dr.Appalayya's first example appears very similar to another frequently used expression, and he may have been wondering.The question was "which of these is correct?"
1.I am in class room.
2.I am in the class room.
I see nothing to persuade me that this is about a class, rather than a class room.