The textbook groups obligatory response-fāʾ into four types: past verb with qad; imperfect negated by a particle other than ordinary negative lā; nominal clause; and nondeclarative/performative clause (command, prohibition, question, prayer).
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Four Main Obligatory-Fāʾ Categories
The Jussive Imperfect: Governors, Conditions, and Request Responses
The textbook groups obligatory response-fāʾ into four types: past verb with qad; imperfect negated by a particle other than ordinary negative lā; nominal clause; and nondeclarative/performative clause (command, prohibition, question, prayer).