---
title: Friction slows things down, but it also lets you walk, stop and hold… — Friction: the grip that stops and helps · tree and pragmatics
description: Friction slows things down, but it also lets you walk, stop and hold things, and the bumpy soles of your shoes are made to grip. Who acts: Friction, you, bumpy soles. A sentence of the lesson «Friction: the grip that stops and helps» of the physics course of Mova's primary school with its dependency
---

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# Friction: the grip that stops and helps, sentence 2

<!-- .ven lang=en -->
Friction slows things down, but it also lets you walk, stop and hold things, and the bumpy soles of your shoes are made to grip.

<!-- .vintro -->
**Who acts:** Friction, you, bumpy soles · **What happens:** slow down, let, walk, stop, hold, make · **To what, where:** things, bumpy soles

<!-- .vabout -->
This is a sentence of the lesson «Friction: the grip that stops and helps» of the physics 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 (Friction, you, bumpy soles), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:006-friction-the-grip.lesson:2
# text = Friction slows things down, but it also lets you walk, stop and hold things, and the bumpy soles of your shoes are made to grip.
# source = school lesson (ours)
# course = physics
# lesson = 006-friction-the-grip.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): R3-conj-first ×1, R7-rel-agree ×1, R8-pos-agree ×2
1	Friction	friction	NOUN	NN	Number=Sing	2	nsubj	_	_
2	slows	slow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	things	thing	NOUN	NNS	Number=Plur	2	obj	_	_
4	down	down	ADP	RP	_	2	compound:prt	_	Agree=R7-rel-agree|Haiku=2:advmod|HaikuPos=ADV:RB:_
5	,	,	PUNCT	,	_	9	punct	_	_
6	but	but	CCONJ	CC	_	9	cc	_	_
7	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	9	nsubj	_	_
8	also	also	ADV	RB	_	9	advmod	_	_
9	lets	let	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
10	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	11	nsubj	_	_
11	walk	walk	VERB	VB	VerbForm=Inf	9	xcomp	_	Agree=R8-pos-agree|Haiku=9:xcomp|HaikuPos=VERB:VBP:Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin
12	,	,	PUNCT	,	_	13	punct	_	_
13	stop	stop	VERB	VB	VerbForm=Inf	11	conj	_	Agree=R8-pos-agree|Haiku=11:conj|HaikuPos=VERB:VBP:Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin
14	and	and	CCONJ	CC	_	15	cc	_	_
15	hold	hold	VERB	VB	VerbForm=Inf	11	conj	_	Agree=R3-conj-first|Haiku=13:conj|HaikuPos=VERB:VBP:Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin
16	things	thing	NOUN	NNS	Number=Plur	15	obj	_	_
17	,	,	PUNCT	,	_	26	punct	_	_
18	and	and	CCONJ	CC	_	26	cc	_	_
19	the	the	DET	DT	Definite=Def|PronType=Art	21	det	_	_
20	bumpy	bumpy	ADJ	JJ	Degree=Pos	21	amod	_	_
21	soles	sole	NOUN	NNS	Number=Plur	26	nsubj:pass	_	_
22	of	of	ADP	IN	_	24	case	_	_
23	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	24	nmod:poss	_	_
24	shoes	shoe	NOUN	NNS	Number=Plur	21	nmod	_	_
25	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	26	aux:pass	_	_
26	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	2	conj	_	_
27	to	to	PART	TO	_	28	mark	_	_
28	grip	grip	VERB	VB	VerbForm=Inf	26	xcomp	_	_
29	.	.	PUNCT	.	_	2	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **slow down** | present | Friction | things |  |  |  |  | vn other\_cos-45.4 «NP V NP.patient»: agent=Agent thing=Patient |
| 2 | **let** | present | Friction |  |  |  |  |  | tree rules |
| 3 | **walk** | infinitive | you |  |  |  |  |  | vn run-51.3.2-2-1 «NP V»: agent=Theme |
| 4 | **stop** | infinitive | you *not said here* |  |  |  |  |  | vn stop-55.4-1-1 «NP.eventuality V»: agent=Eventuality |
| 5 | **hold** | infinitive | you *not said here* | things |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent thing=Theme |
| 6 | **make** | present · passive |  | the bumpy soles of your shoes |  |  |  |  | tree rules |
| 7 | **grip** | to-infinitive | the bumpy soles of your shoes *not said here* |  |  |  |  |  | vn touch-20-1 «NP V NP»: agent=Agent |

<!-- .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:physics:006-friction-the-grip.lesson:2`.

**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): R3-conj-first ×1, R7-rel-agree ×1, R8-pos-agree ×2. **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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