The phrase "911 hari yang lalu" functions as an adverbial phrase of time. Its grammatical role is to modify a verb, an adjective, or another adverb by specifying when an action or event occurred. It answers the question "when?" in relation to the main clause of a sentence.
A detailed grammatical analysis reveals its composite structure. The core element is the noun phrase "911 hari" ("911 days"), where "hari" (day) is the head noun and "911" is a cardinal number acting as a quantifier or determiner. This noun phrase is post-modified by the relative clause "yang lalu," which translates to "that has passed" or more idiomatically, "ago." The combination of a quantified noun of time (hari) with the post-modifier "yang lalu" is a standard construction in the Indonesian language for creating temporal adverbials that point to a specific moment in the past.
In practical application, identifying "911 hari yang lalu" as an adverbial phrase is crucial for correct sentence construction and analysis. It acts as a single semantic unit that situates the verb's action at a point approximately two and a half years prior to the moment of speaking or writing. Understanding its function as an adverbial, rather than a noun phrase, is fundamental to interpreting the temporal context of the narrative or statement in which it appears.
