Rhetorical functionDiagnostic questionTypical indication
Firm expectationIs the future depicted as nearly realized?Strong causes or past-like presentation
Expression of desireIs longing for the outcome central?A context of request or aspiration
Indirect implicationAre other hearers targeted through the explicit addressee?A contextual extension of admonition
One form may serve multiple purposes, but not automatically. A sound interpretation selects the function supported by the circumstances rather than piling every possible explanation onto each instance.