pag-...-an (pokus sa ganapan)

The pag-...-an circumfix consists of the prefix pag- and the suffix -an (or -han). It is essential for maintaining clarity when the verb root belongs to the mag- class.

1. Conjugation and Aspect:
The pattern changes based on the aspect of the verb. The standard way to form these aspects is through reduplication of the first syllable of the root. Note that the prefix pinag- used in the completed and progressive aspects is formed by inserting the standard completed aspect infix -in- into the pag- prefix (p-in-ag-):

• Neutral (Infinitive/Command): pag + root + -an (e.g., paglutuan)
• Completed (Past): pinag + root + -an (e.g., pinaglutuan)
• Progressive (Ongoing): pinag + CV-root + -an (e.g., pinaglulutuan)
• Contemplated (Future): pag + CV-root + -an (e.g., paglulutuan)

Note: An alternative, widely used reduplication method is to reduplicate the pa- of the prefix instead of the root (e.g., pinapaglutuan for progressive, papaglutuan for contemplated).

2. Syntax Markers:
In this focus, the location or referent is the subject and takes the ang marker. The actor or doer of the action takes the non-subject ng marker. Importantly, the direct object of the action also takes the ng marker. This means a sentence can have two ng phrases (one for the actor, one for the object). For example, in Pinaglutuan ko ng adobo ang bagong kawali ('I cooked adobo in the new pan'), ko is the actor, ng adobo is the direct object, and ang bagong kawali is the location/subject.

3. Morphophonemic Changes:

• Vowel vs. Glottal Stop: Roots ending in a vowel sound typically take the suffix -han (e.g., basa becomes pagbasahan). However, roots ending in a written vowel but pronounced with a final glottal stop take the regular -an suffix. The glottal stop is retained and acts as a hard stop or consonant onset between the vowels (e.g., larô becomes paglaruan, pronounced /pag.la.ru.ˈʔan/).
• O to U Shift: If a root ends in 'o', it usually changes to 'u' when the suffix is added (e.g., larô becomes paglaruan).
• Hyphenation: When the root begins with a vowel, a hyphen must be inserted between the pag- prefix and the root (e.g., aral becomes pag-aralan).
• Syncopation: The final vowel of the root is frequently dropped when the suffix is added (e.g., takip becomes pagtakpan, laba becomes paglabhan).

4. Stress Shift:
When adding the -an suffix, the stress shifts exactly one syllable to the right. For example, lúto (cook) becomes paglutúan (stress moves to the 'tu'). If the root originally has stress on the final syllable, the stress will land on the suffix itself (e.g., larô becomes paglaruán).

5. Usage Nuance:
While primarily a Location Focus, this pattern is also used for 'Referent Focus'—where the subject is the thing being talked about or acted upon in a complex way (e.g., pag-usapan 'to talk about something').