---
title: How often should a toothbrush usually be replaced? — Brushing your teeth · tree and pragmatics
description: How often should a toothbrush usually be replaced? Test 4 · ★ of lesson 73 «Brushing your teeth» of the everyday course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 4 · ★ · Brushing your teeth

<!-- .ven lang=en -->
How often should a toothbrush usually be replaced?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **What happens:** replace · **To what, where:** toothbrush

<!-- .vabout -->
This is test 4 · ★ of lesson 73 «Brushing your teeth» of the everyday course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/everyday/73-brushing-your-teeth/#t4).

## The question {#question}

```conllu
# sent_id = question:everyday:73-brushing-your-teeth:t4:1
# text = How often should a toothbrush usually be replaced?
1	How	how	ADV	WRB	PronType=Int	2	advmod	_	_
2	often	often	ADV	RB	_	8	advmod	_	_
3	should	should	AUX	MD	VerbForm=Fin	8	aux	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	toothbrush	toothbrush	NOUN	NN	Number=Sing	8	nsubj:pass	_	_
6	usually	usually	ADV	RB	_	8	advmod	_	_
7	be	be	AUX	VB	VerbForm=Inf	8	aux:pass	_	_
8	replaced	replace	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	SpaceAfter=No
9	?	?	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **replace** | should · passive |  | a toothbrush |  |  |  | often, usually *property* | vn substitute-13.6.2-1 «NP V NP»: subject=Co-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.

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
About every three months, or when the bristles splay

```conllu
# sent_id = question:everyday:73-brushing-your-teeth:t4:o1:1
# text = About every three months, or when the bristles splay
1	About	about	ADV	RB	_	4	advmod	_	_
2	every	every	DET	DT	PronType=Tot	4	det	_	_
3	three	three	NUM	CD	NumForm=Word|NumType=Card	4	nummod	_	_
4	months	month	NOUN	NNS	Number=Plur	10	nsubj	_	SpaceAfter=No
5	,	,	PUNCT	,	_	10	punct	_	_
6	or	or	CCONJ	CC	_	10	cc	_	_
7	when	when	SCONJ	WRB	_	10	mark	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	bristles	bristle	NOUN	NNS	Number=Plur	10	nsubj	_	_
10	splay	splay	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **splay** | present | every three months |  |  |  |  |  | vn bend-45.2 «NP.patient V»: agent=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
Once a year, on your birthday

```conllu
# sent_id = question:everyday:73-brushing-your-teeth:t4:o2:1
# text = Once a year, on your birthday
1	Once	once	ADV	RB	NumForm=Word|NumType=Mult	3	advmod	_	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
3	year	year	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
4	,	,	PUNCT	,	_	3	punct	_	_
5	on	on	ADP	IN	_	7	case	_	_
6	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	7	nmod:poss	_	_
7	birthday	birthday	NOUN	NN	Number=Sing	3	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
Every week, after each Sunday

```conllu
# sent_id = question:everyday:73-brushing-your-teeth:t4:o3:1
# text = Every week, after each Sunday
1	Every	every	DET	DT	PronType=Tot	2	det	_	_
2	week	week	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
3	,	,	PUNCT	,	_	2	punct	_	_
4	after	after	ADP	IN	_	6	case	_	_
5	each	each	DET	DT	PronType=Tot	6	det	_	_
6	Sunday	Sunday	PROPN	NNP	Number=Sing	2	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
Only when it breaks in two or the handle snaps off

```conllu
# sent_id = question:everyday:73-brushing-your-teeth:t4:o4:1
# text = Only when it breaks in two or the handle snaps off
1	Only	only	ADV	RB	_	4	advmod	_	_
2	when	when	ADV	WRB	PronType=Int	4	advmod	_	_
3	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
4	breaks	break	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	in	in	ADP	IN	_	6	case	_	_
6	two	two	NUM	CD	NumForm=Word|NumType=Card	4	obl	_	_
7	or	or	CCONJ	CC	_	10	cc	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	handle	handle	NOUN	NN	Number=Sing	10	nsubj	_	_
10	snaps	snap	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
11	off	off	ADP	RP	_	10	compound:prt	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **break** | present | it |  |  | two |  |  | vn appear-48.1.1 «NP V PP.location»: agent=Theme in two=Location |
| 2 | **snap off** | present | the handle |  |  |  |  |  | vn sound\_emission-43.2 «NP V»: agent=Theme |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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- ← previous: [Brushing your teeth, test 3](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t3/)
- next →: [Brushing your teeth, test 5](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t5/)
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