---
title: The Moon's phases happen because we see different amounts of its sun… — Phases, eclipses and tides · tree and pragmatics
description: The Moon's phases happen because we see different amounts of its sunlit half as it orbits the Earth. Who acts: phases, we, eclipse. A sentence of the lesson «Phases, eclipses and tides» of the space course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Phases, eclipses and tides, sentence 5

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The Moon's phases happen because we see different amounts of its sunlit half as it orbits the Earth.

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**Who acts:** phases, we, eclipse · **What happens:** happen, see, orbit, amount · **To what, where:** different amounts, Earth, sunlit half

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This is a sentence of the lesson «Phases, eclipses and tides» of the space 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 (phases, we, eclipse), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:space:007-phases-eclipses-and-tides.lesson:5
# text = The Moon's phases happen because we see different amounts of its sunlit half as it orbits the Earth.
# source = school lesson (ours)
# course = space
# lesson = 007-phases-eclipses-and-tides.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	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	Moon	Moon	PROPN	NNP	Number=Sing	4	nmod:poss	_	_
3	's	's	PART	POS	_	2	case	_	_
4	phases	phase	NOUN	NNS	Number=Plur	5	nsubj	_	_
5	happen	happen	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	because	because	SCONJ	IN	_	8	mark	_	_
7	we	we	PRON	PRP	Case=Nom|Number=Plur|Person=1|PronType=Prs	8	nsubj	_	_
8	see	see	VERB	VBP	Mood=Ind|Number=Plur|Person=1|Tense=Pres|VerbForm=Fin	5	advcl	_	_
9	different	different	ADJ	JJ	Degree=Pos	10	amod	_	_
10	amounts	amount	NOUN	NNS	Number=Plur	8	obj	_	_
11	of	of	ADP	IN	_	14	case	_	_
12	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	14	nmod:poss	_	_
13	sunlit	sunlit	ADJ	JJ	Degree=Pos	14	amod	_	_
14	half	half	NOUN	NN	Number=Sing|NumForm=Word|NumType=Frac	10	nmod	_	_
15	as	as	SCONJ	IN	_	17	mark	_	_
16	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	17	nsubj	_	_
17	orbits	orbit	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	advcl	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	19	det	_	_
19	Earth	Earth	PROPN	NNP	Number=Sing	17	obj	_	_
20	.	.	PUNCT	.	_	5	punct	_	_
```

## Pragmatics {#pragmatics}

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

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **happen** | present | the Moon's phases |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **see** | present | we | different amounts of eclipse's sunlit half |  |  |  |  | vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer amount=Stimulus |
| 3 | **orbit** | present | eclipse | the Earth |  |  |  |  | tree rules |
| 4 | **amount** |  |  | eclipse's sunlit half |  |  |  |  | nom amount «possession transitive»: of=patient |

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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:space:007-phases-eclipses-and-tides.lesson:5`.

**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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