---
title: Snakes shed their skin in one piece as they grow, starting at the li… — Snakes and lizards · tree and pragmatics
description: Snakes shed their skin in one piece as they grow, starting at the lips, and their eyes turn cloudy blue just before. Who acts: Snakes, eyes. A sentence of the lesson «Snakes and lizards» of the biology course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Snakes and lizards, sentence 6

<!-- .ven lang=en -->
Snakes shed their skin in one piece as they grow, starting at the lips, and their eyes turn cloudy blue just before.

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**Who acts:** Snakes, eyes · **What happens:** shed, grow, start, turn · **To what, where:** skin, one piece, lips

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This is a sentence of the lesson «Snakes and lizards» of the biology course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Snakes, eyes), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:030-snakes-and-lizards.lesson:6
# text = Snakes shed their skin in one piece as they grow, starting at the lips, and their eyes turn cloudy blue just before.
# source = school lesson (ours)
# course = biology
# lesson = 030-snakes-and-lizards.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change
1	Snakes	snake	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	shed	shed	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
3	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	4	nmod:poss	_	_
4	skin	skin	NOUN	NN	Number=Sing	2	obj	_	_
5	in	in	ADP	IN	_	7	case	_	_
6	one	one	NUM	CD	NumForm=Word|NumType=Card	7	nummod	_	_
7	piece	piece	NOUN	NN	Number=Sing	2	obl	_	_
8	as	as	SCONJ	IN	_	10	mark	_	_
9	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	10	nsubj	_	_
10	grow	grow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	advcl	_	_
11	,	,	PUNCT	,	_	12	punct	_	_
12	starting	start	VERB	VBG	Tense=Pres|VerbForm=Part	10	advcl	_	_
13	at	at	ADP	IN	_	15	case	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	lips	lip	NOUN	NNS	Number=Plur	12	obl	_	_
16	,	,	PUNCT	,	_	20	punct	_	_
17	and	and	CCONJ	CC	_	20	cc	_	_
18	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	19	nmod:poss	_	_
19	eyes	eye	NOUN	NNS	Number=Plur	20	nsubj	_	_
20	turn	turn	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
21	cloudy	cloudy	ADJ	JJ	Degree=Pos	22	amod	_	_
22	blue	blue	ADJ	JJ	Degree=Pos	20	xcomp	_	_
23	just	just	ADV	RB	_	24	advmod	_	_
24	before	before	ADV	RB	_	20	advmod	_	_
25	.	.	PUNCT	.	_	2	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **shed** | past | Snakes | Snakes's skin |  | one piece |  |  | vn substance\_emission-43.4-1 «PP.location V NP»: agent=Location skin=Source |
| 2 | **grow** | present | Snakes *= snake* |  |  |  |  |  | vn appear-48.1.1 «NP V»: agent=Theme |
| 3 | **start** | gerund | Snakes *= snake* *not said here* |  |  | the lips |  |  | vn begin-55.1-1-1 «NP.eventuality V»: agent=Eventuality |
| 4 | **turn** | present | Snakes's eyes |  |  |  |  | before, blue *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:biology:030-snakes-and-lizards.lesson:6`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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- ← previous: [Snakes and lizards, 5](https://md.mova.elamur.ai/free/en/corpora/school/biology/30-snakes-and-lizards/5/)
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