LessonsCharacteristics of Form VII (Infiʿāl): Intransitivity, Manifestation, Resulting Action, Equivalence, Root Restrictions and Independent UseQuiz

Form IV can highlight an agent causing an effect. Form VII then describes what happened to the affected entity.
أَغْلَقْتُ الْبَابَ فَانْغَلَقَ
Translation: I shut the door, so it shut.
The second clause is not redundant: the first names the causing act, while the second names its result. This is the specific relationship the textbook calls responsiveness to Form IV.

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Cause and Result Can Belong to Different Forms

Characteristics of Form VII (Infiʿāl): Intransitivity, Manifestation, Resulting Action, Equivalence, Root Restrictions and Independent Use

Form IV can highlight an agent causing an effect. Form VII then describes what happened to the affected entity.
أَغْلَقْتُ الْبَابَ فَانْغَلَقَ
Translation: I shut the door, so it shut.
The second clause is not redundant: the first names the causing act, while the second names its result. This is the specific relationship the textbook calls responsiveness to Form IV.