---
title: Snakes shed their skin as they grow, often in one piece. — Fish, frogs and reptiles · tree and pragmatics
description: Snakes shed their skin as they grow, often in one piece. Who acts: Snakes, smells. A sentence of the lesson «Fish, frogs and reptiles» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Fish, frogs and reptiles, sentence 20

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Snakes shed their skin as they grow, often in one piece.

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**Who acts:** Snakes, smells · **What happens:** shed, grow · **To what, where:** skin, one piece

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This is a sentence of the lesson «Fish, frogs and reptiles» of the world 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, smells), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:074-fish-frogs-reptiles.lesson:20
# text = Snakes shed their skin as they grow, often in one piece.
# source = school lesson (ours)
# course = world
# lesson = 074-fish-frogs-reptiles.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	as	as	SCONJ	IN	_	7	mark	_	_
6	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	7	nsubj	_	_
7	grow	grow	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	advcl	_	_
8	,	,	PUNCT	,	_	12	punct	_	_
9	often	often	ADV	RB	_	12	advmod	_	_
10	in	in	ADP	IN	_	12	case	_	_
11	one	one	NUM	CD	NumForm=Word|NumType=Card	12	nummod	_	_
12	piece	piece	NOUN	NN	Number=Sing	2	obl	_	_
13	.	.	PUNCT	.	_	2	punct	_	_
```

## Pragmatics {#pragmatics}

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No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **shed** | past | Snakes | smells's skin |  | one piece |  |  | vn substance\_emission-43.4-1 «PP.location V NP»: agent=Location skin=Source |
| 2 | **grow** | present | smells *= smell* |  |  |  |  |  | vn appear-48.1.1 «NP V»: agent=Theme |

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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:world:074-fish-frogs-reptiles.lesson:20`.

**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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