P17 · The "should" mood puts on its Ā coat + claim your boat
Draft · in reviewTeacher notes / sources (students may skip)
Corresponds to: Perry Lesson XVII (§210–214) = SKT บทที่ 17 (สัปตมีวิภักติ อาตมเนบท นามศัพท์ เนา และอา, อี, อู การันต์). First half of W10. Sources: Perry §210–214 (backbone; §210 paradigm table's 1st-person row missing in OCR, gap filled from Goldman + Ruppel dual sources, no independent extrapolation) + Goldman §14.15.b (middle-voice rule, explicit -ran trap) + Goldman §21.2 (full nau paradigm) + Ruppel Ch.30 (secondary middle endings; dual-padding yā easily confused point) —— four-source mining in 260702-P13-P30-四源挖料. SKT_Thai vols. 16–20 OCR corrupted, no original-text quotation (same approach as P16). Core: two things — the "should" mood puts on its Ā coat (P16 active -et/-eḥ/-eyam → today -eta/-ethāḥ/-eya; the "they" trap -ran); claiming nau — the true self behind เนา/นาวิก, and it's a model student of regularity (the opposite of go). Root nouns in ā/ī/ū — closing the loop, no new teaching: dhī (P13's little sister) and bhū (P14's ū-family) join old faces into one mnemonic.
"Thai เนา (boat, archaic/poetic word, everyday word is เรือ) — this is Sanskrit nau. And the boatman?
นาวิก — Sanskrit nāvika, the front half of นาวิกโยธิน (marine corps). The sea?
สาคร — Sanskrit sāgara, the second half of the province name สมุทรสาคร.
Let's also claim ภู (mountain, earth — the ภู in ภูเก็ต, Phuket) — this is Sanskrit bhū (earth): P14's ภูมิ (bhūmi) is its cousin,
and P01's very first-day verb bhavati is its verb-face — today one word, three faces, all claimed at once."
Today's sound rule (C2, taught alongside the vocabulary): Sanskrit v enters Thai by two routes. The old route goes straight to ว (A4, P05's old rule — the ว in นาวิก is exactly nāvika's v). The new route switches to พ: vāṇijya→พาณิชย์ (commerce — กระทรวงพาณิชย์, the Ministry of Commerce). The best proof is that both forms coexist: วาณิช＝พาณิช (merchant; วาณิช takes the old route, พาณิช the new one — the Royal Institute Dictionary lists both). One more old friend: พรรษา←varṣā (rainy season, a C2 + E1 double-rule word).
(Verbs: labh←P08/P15 changes into the "should"-mood Ā coat; mod (rejoice)←P16 teacher's-note-only word, on stage today; gam/bhū←P01 (gaccheḥ/bhavet recycle P16's active forms — active and middle share the ear-training moment); cal (move) is a self-composed light verb, not entered into the store. Nouns: nau/nāvika/sāgara newly entered; bhū←P14 (bhūs already known); jala←P14, jana←P04, pitā←P15; sthirā is a light adjective. Sandhi: ๑ labheya＋iti→labheyeti (a＋i→e, vowel sandhi listen-only, carrying on from P15's labhasveti); ๓ naur jale (ḥ＋voiced→r, recycled from P02), nāvikaś ca (ḥ＋c→ś, recycled); ๔ janās tatra (ḥ＋t→s, recycled from P02); bhūḥ sthirā unchanged (listen only). Recognition points per sentence: ๑ นาวิก (Thai: "boatman")/เนา (Thai: "boat"); ๒ เนา/สาคร (Thai: "sea"); ๓ เนา/นาวิก; ๔ ภู (Thai: "earth, mountain")/ชน (Thai: "person").)
Line one: the "should" mood puts on its Ā coat.
"P16's 'he should' is -et (gacchet). Ā-coat verbs (P08's -te family) share the same wish-switch e, just a different coat:
'he should…' = -eta: labheta (he would get). 'you should…' = -ethāḥ: labhethāḥ.
'if only I…' = -eya: labheya. Same switch, different coat — exactly the same swap as before (P14→P15)."
Full paradigm (with labh; Goldman §14.15.b / Ruppel Ch.30 same structure)
| Singular | Dual | Plural | |
|---|---|---|---|
| he | लभेत labheta | लभेयाताम् labheyātām | लभेरन् labheran |
| you | लभेथाः labhethāḥ | लभेयाथाम् labheyāthām | लभेध्वम् labhedhvam |
| I | लभेय labheya | लभेवहि labhevahi | लभेमहि labhemahi |
"Same trap as before: 'they' is not -anta, it's -eran (labheran). Remember it paired with P16:
'the "should" mood's "they" always swaps its tail' — active -eyuḥ, Ā coat -eran."
▸ Load-lightening point (Ruppel Ch.30): this set of endings = the same family as P13's yesterday-form Ā coat, the only difference being: swap the wish-switch to e, don't attach the past switch a-; the dual pads in an extra yā after the e (labheyāthām/labheyātām — the yesterday-form was alabhethām; just catch the extra yā by ear).
Line two: nau — a model student of regularity.
"nau (boat) is the opposite of go: it wears every hat completely by the rules, no tricks at all — subject hat नौः, direction hat नावम्,
instrument hat नावा. Mnemonic: before a vowel, use nāv-; before a consonant, use nau- — all the hats you already know."
| Singular | Dual | Plural | |
|---|---|---|---|
| Subj./Voc. | नौः nauḥ | नावौ nāvau | नावः nāvaḥ |
| Direction (Acc.) | नावम् nāvam | नावौ nāvau | नावः nāvaḥ |
| Instrument | नावा nāvā | नौभ्याम् naubhyām | नौभिः naubhiḥ |
| Location (Loc.) | नावि nāvi | नावोः nāvoḥ | नौषु nauṣu |
Line two continued: root families in ā/ī/ū close the loop (old faces merge, nothing new taught).
"P13's little sister dhī splits into iy when it puts on its hats (dhiyam/dhiyā); P14's bhū you've heard swell into uv (bhuvam).
Today we merge them into one mnemonic: ī splits into iy, ū splits into uv — bhuvam/bhuvā and dhiyam/dhiyā are perfectly symmetrical.
The whole family of monosyllabic bare-root nouns follows this one trick — nothing new."
Building blocks reused: yadi…tarhi… (already entered in P16) — no new building blocks this lesson.
TPRS wrap-up: "What did the boatman want? What did the father say? What would the boat do?" — students chain the story together using -eya/-ethāḥ/-eta.
- "Ā-coat 'should' mood: -eta/-eyātām/-eran (he), -ethāḥ/-eyāthām/-edhvam (you), -eya/-evahi/-emahi (I) — 'they' is -eran, not -anta; the dual pads in an extra yā."
- "nau = model student of regularity: before a vowel nāv-, before a consonant nau- (นาวิก is exactly nāv-＋ika)."
- "Bare-root mnemonic closes the loop: ī splits into iy (dhiyam, P13), ū splits into uv (bhuvam, P14) — today just a merge, nothing new."
- "Sound-rule day (C2): v→พ (พาณิชย์／วาณิช-พาณิช双 forms); compare with the old route v→ว (นาวิก) — same v, two routes, pick by the word."
Full-paradigm choral reading (labheta/labhethāḥ/labheya three-way rotation); active↔Ā-coat contrast pairs: 🔇gacchet↔labheta🔇 (P16/P17 bridge); yesterday-🔇form↔should🔇-form Ā-coat contrast: 🔇alabhethām↔labheyāthām🔇 (catch the padded yā, ear-training only, not tested); full nau paradigm; 🔇dhiyam↔bhuvam🔇 symmetry drilled five times (ī splits iy／ū splits uv); story's four sentences in both versions; sandhi clips: naur jale／nāvikaś ca／janās tatra (three examples of ḥ side by side).
(Teacher-reference words: mitra/yuddha/purohita/śvaśura/maraṇa/vidhi (Perry XVII word-list, reserved for decode-and-reclaim use: มิตร／ยุทธ์〔already seen in P08〕／มรณ- to be reclaimed in a later lesson); pratīkṣ/abhinand/ram/viram/anuṣṭhā (new XVII-list verbs, not entered into the student page); viśvapā/yavakrī/khalapū-type words (root-final ā/ī/ū compound endings, Perry §213–214 — these two sections' tables are misaligned in OCR, do not copy them, beyond this lesson's load, for teacher reference only.)
Crystallization Lesson Five (covers P16–17): the full "should"-mood active + Ā-coat paradigm side by side gets a formal home (the -eyuḥ/-eran double-trap contrast), + go／nau／dhī-bhū three types side by side (face-changing champion vs. model student of regularity vs. split-sound mnemonic), + full review of negation mā (imperative) vs. na (should).