P18 · The "have-someone-do" machine gets registered + claim your "I" + first sight of "the one who is …ing"
Draft · in reviewTeacher notes / sources (students may skip)
Corresponds to: Perry Lesson XVIII (§215–225) = SKT บทที่ 18 (กริยาเหตุกัตตุวาจก บุรุษสรรพนาม และ Present Participle). Second half of W10. Sources: Perry §215–225 (backbone) + Goldman §18.4–18.9 (explicit two-way causative case marking: intransitive→accusative, transitive→instrumental) + Goldman §4.45–46 (full aham paradigm, Perry §223's dual locative row is OCR-doubtful, supplemented from Goldman) + Goldman §15.0–15.6 (introduction to the present participle) —— four-source mining in 260702-P13-P30-四源挖料. SKT_Thai vols. 16–20 not quoted for original examples (same approach as P16/P17). This lesson has no source draft for unit 07, story is self-composed, verbs recycled as much as possible from earlier lessons. Core: three things — the "have-someone-do" machine gets registered — the -aya- family (pūjayati/kathayati) you've been using as a whole building block since P07 now gets its formal home: root + aya = causative, matching Thai ทำให้ + verb exactly; claiming your "I" (the full aham paradigm + the enclitics mā/me that can't lead a sentence); first sight of "the one who is …ing" (the present participle -ant; this lesson only recognizes the form, full declension is left for a later lesson).
"Today let's first claim a living 'have-someone-do' machine in Thai: สถาปนา (to establish, enthrone, elevate someone) — this is Sanskrit sthāpana,
hiding inside it the causative machine's stem sthāp- ('cause to stand' = set up, establish). When the Thai king 'สถาปนา's someone into a position, it means 'causes him to stand in that position.'
Let's claim one more everyday word: การ (matter, action, การทำงาน work) — this is Sanskrit kāra ('the thing done'), sharing the same root √kṛ with the causative face of 'do,' kārayati (cause to do).
Two faces in the story: teacher ครู = Sanskrit guru, cart รถ = Sanskrit ratha.
One big event: up to today you've only been able to say 'he reads.' Today you get 'have him read' — one switch, and your whole verb inventory doubles again."
No new sound rule to claim this lesson (the Decoder rule pool is winding down, §5 reinforces already-taught rules instead): สถาปนา's ถ←sth and การ's ก←k both follow already-taught direct-mapping tables; คุณ←guṇa's ณ is P03's ṇatva (E4), บุษบา←puṣpa's บ←p is P07's C1 — this lesson treats them as a review sweep, not a new rule.
(Every verb is either an old friend or an old friend's causative face: paṭhati (read, P11 already used its past tense apaṭhat) → pāṭhayati (cause to read = teach; the initial a lengthens to ā); sthā (stand) → sthāpayati (cause to stand = stop/establish, a p is inserted); paśyati (see, P05) recycled unchanged. api (also/even) is a light word used first, analyzed later. Nouns are all confirmed cognates: kumāra (กุมาร) ／ guru (ครู) ／ nṛpa (นฤปะ; ราชัน←rājan is also this) ／ ratha (รถ). Sandhi: ๒ guruḥ unchanged before voiceless k; ๓ gurur mām (ḥ＋voiced→r, recycled from P02); ๔ nṛpo rathaṃ (aḥ＋voiced→o, recycled from P02); ๕ ahaṃ nṛpaṃ (m＋consonant→ṃ). Recognition points per sentence: ๑ กุมาร (Thai: "boy")／pāṭha (station name, same root); ๒ ครู (Thai: "teacher")／กุมาร; ๓ ครู／pāṭha; ๔ นฤปะ (Thai: "king")／รถ (Thai: "cart")／สถาปนา (Thai: "to establish"); ๕ นฤปะ／aham (the pronoun's true self).)
Line one: the "have-someone-do" machine (-aya-).
"'He reads' is paṭhati. 'He has someone else read' — three steps: ① the initial vowel usually lengthens (paṭh→pāṭh) ② attach -aya- ③ add the usual endings: pāṭhayati.
You've seen this machine's face since P07: pūjayati (worship), kathayati (tell) both carry this same -aya- — today it gets its formal home: root + aya = 'have… do.'"
Thai bridge (this lesson's core comparison): Thai says "have… do" with two pieces: ทำให้ + verb (ครูทำให้นักเรียนอ่าน "the teacher has the student read"). Sanskrit fuses these two pieces into one word: pāṭhayati. Same function ("have… do"), opposite method — Thai splits apart, Sanskrit fuses together.
"One thing to watch for — for 'have whom do it,' which hat does that person wear? For the teach/feed type (पाठयति/भोजयति), 'the one being taught' wears the direction hat:
guruḥ kumāram pāṭhayati (the teacher teaches 'the boy'). For most other transitive verbs, 'the one caused to act' usually wears the instrument hat — that's a topic for next week; today we only recognize this 'teach'-type pattern."
▸ Big mechanism payoff: one infix -aya-, and your whole verb inventory instantly grows a causative face. Zero new roots. paṭhati→pāṭhayati, gam→gamayati (cause to go = send), kṛ→kārayati (cause to do), dā→dāpayati (cause to give) — the initial/medial short a often lengthens (pāṭh), while a final vowel upgrades (kṛ→kār, just get used to the sound).
Line two: claiming your "I" (the full aham set).
"'I' isn't one word, it's a whole set of hats. Subject 'I' = अहम् aham (can lead a sentence); the direction hat for 'see me' = माम् mām (can shorten to मा mā);
the possessive hat for 'my' = मम mama (shortened मे me); 'give me' = मह्यम् mahyam (shortened मे me). Those shortened forms (mā/me/naḥ) are the lazy versions — they lean lightly on another word,
cannot lead a sentence, and cannot stand before ca/eva/vā."
| Singular | Dual | Plural | |
|---|---|---|---|
| Subj. (who) | अहम् aham | आवाम् āvām | वयम् vayam |
| Direction (Acc.) | माम्／मा mām／mā | आवाम्／नौ āvām／nau | अस्मान्／नः asmān／naḥ |
| Instrument | मया mayā | आवाभ्याम् āvābhyām | अस्माभिः asmābhiḥ |
| To (Dat.) | मह्यम्／मे mahyam／me | आवाभ्याम्／नौ | अस्मभ्यम्／नः asmabhyam／naḥ |
| From (Abl.) | मत् mat | आवाभ्याम् | अस्मत् asmat |
| Whose (Gen.) | मम／मे mama／me | आवयोः／नौ āvayoḥ／nau | अस्माकम्／नः asmākam／naḥ |
| Where (Loc.) | मयि mayi | आवयोः āvayoḥ | अस्मासु asmāsu |
"There's also a small pragmatic trick: Sanskrit often says 'we' to mean 'I' (modesty/formality), the same logic as Thai เรา, which can mean either singular or plural —
hearing vayam doesn't necessarily mean it's really plural."
Line three: first sight of "the one who is …ing" (-ant).
"Give a verb a hat for 'the one who is …ing' — one mnemonic: take the present-tense 'they' form and cut off the tail -i — what's left is the '…ing' stem.
gacchanti (they go) → gacchant- → 'the one going' gacchan; paṭhanti→paṭhan ('the one reading').
Today we only recognize this form, no full set of hats — the full hat-set comes in a much later lesson (Perry gets to it in Lesson 23)."
▸ Planting a seed: ภักดี (loyal, devout) = Sanskrit bhakti, the same root √bhaj wearing this hat gives bhajan 'the one who is worshipping' — Thai borrowed this "…ing" hat long ago and turned it into a noun.
- "The have-someone-do machine: root + -aya- = 'have… do' (paṭhati→pāṭhayati, teach). Matches Thai ทำให้ + verb — Thai splits into two pieces, Sanskrit fuses into one."
- "Teach/feed type: the one being taught wears the direction hat (kumāram pāṭhayati); most other causers wear the instrument hat (details next week)."
- "The full 'I' set: subject aham／direction mām(mā)／possessive mama(me)／to mahyam(me) — those shortened forms are the lazy versions, can't lead a sentence, can't stand before ca/eva/vā."
- "'The one who is …ing': cut the -i off the present tense 'they' form = the '…ing' stem (gacchanti→gacchan). Only recognize the form, full hat-set comes later."
🔇Present↔causative🔇 contrast clips: 🔇paṭhati↔pāṭhayati🔇／🔇gam↔gamayati🔇／🔇kṛ↔kārayati🔇 (catch the -aya- infix and the initial lengthening); full aham paradigm choral reading (aham／mām／mayā／mahyam／mama／mayi six hats in rotation); spotting the lazy versions: mama putraḥ vs. *me leading the sentence (hear the wrong placement); first sight of "the one who is …ing": gacchanti→gacchan, paṭhanti→paṭhan (slow reading, cutting -i, twice); story's five sentences in both versions; sandhi clips: gurur mām／nṛpo rathaṃ／ahaṃ nṛpaṃ (three examples side by side: ḥ→r／aḥ→o／m→ṃ, all recycled from P02).
(Teacher-reference words: Perry XVIII word-list items not in the story — amṛta (อมฤต, nectar) ／ guṇa (คุณ) ／ vastra (พัสตร์) ／ veda (เวท) ／ manoratha (มโนรถ) ／ dāsa／dūta／vṛka／vidhi／upanayana, proper names kālidāsa/daśaratha/kāśī/pāṭaliputra (reserved for decode-and-reclaim and future story lines); causative verbs in reserve: darśayati (cause to see = show) ／ bhojayati (cause to eat = feed) ／ mārayati (cause to die = kill) ／ adhyāpayati (teach) ／ prasthāpayati (dispatch) ／ vardhayati (raise/nurture) ／ śrāvayati (proclaim, announce) — formally reserved for P19 and the story line, not entered on the student page this lesson.)
Next lesson P19 claims the second- and third-person pronouns (tvad/yuṣmad + tad), merging with this lesson's aham into a three-pronoun comparison master table (Goldman/SKT both follow this sequence); the full causative system (past/imperative/should/passive -ya-) and the present participle's full declension are left for a later crystallization lesson and P23 — this lesson only registers and recognizes forms.