[질문] We were at table, We were at the table 와,They are at class, in the class 다른점

at은좁은장소를in은넓고큰장소를나타내는개념에사용됩니다.table과class를비교하면class가더넓은개념이기때문에class는in을사용하고table은at을사용합니다.