Used when someone is interrupted during a task, indicating they can't attend to something else.

Interrupting Activity

Commonly used in casual or informal conversations, less so in formal writing.

Informal Situations

Implies the person is actively and immediately engaged in the activity mentioned.

Refers to an ongoing state or period, like a season or event.

Implies being at a point within a defined timeframe, not necessarily the exact middle.

Does not refer to a physical location, but rather to a period or phase.