Soror parvum pulvinum sub capite fratris ponit et eum pallio tegit.

Because soror is in the nominative singular, the case normally used for the subject of a sentence.

Here, soror means sister, and she is the one doing both actions:

• ponit = puts
• tegit = covers

So soror is the subject of both verbs.

Because pulvinum is the direct object of ponit, so it must be in the accusative singular.

• nominative: pulvinus = a pillow
• accusative: pulvinum = a pillow as the thing being put

The adjective must agree with the noun, so:

• parvus pulvinus = a small pillow as subject
• parvum pulvinum = a small pillow as object

So both words are accusative singular masculine.

Because Latin adjectives must agree with the nouns they describe in:

• gender
• number
• case

Here:

• pulvinum is masculine
• singular
• accusative

So the adjective parvum must also be masculine, singular, accusative.

This agreement is a very important feature of Latin grammar.

Because sub can take different cases depending on the meaning.

With sub:

• ablative usually means location: under / beneath
• accusative usually means motion toward a place: to under / into a position under

Here the idea is location, not movement toward a place:

• sub capite = under the head

So capite is ablative singular of caput.

Capite is ablative singular of caput, meaning head.

It is ablative because it follows sub in the sense of under/beneath as a position.

So:

• caput = head
• capite = under the head / with the head / by the head, depending on context

In this sentence, it specifically means under the brother’s head.

Because fratris is the genitive singular of frater, and the genitive often shows possession.

So:

• frater = brother
• fratris = of the brother / the brother’s

Thus:

• capite fratris = under the brother’s head

English often prefers brother’s, while Latin commonly uses the genitive ending instead of a separate word like ’s.

Latin often does not use a possessive adjective where English would.

Instead of saying something like under his head, Latin can simply say:

• sub capite fratris = literally under the head of the brother

The relationship is clear from the genitive fratris. Latin often leaves possession to be understood from context rather than adding a separate possessive word.

Eum means him, and it refers to the brother.

Even though frater itself does not appear in the nominative or accusative here, the genitive fratris has already introduced him. So when the sentence continues with eum, Latin means the brother just mentioned.

Grammatically:

• eum is accusative singular masculine
• it is the direct object of tegit

So the sister first puts the pillow under her brother’s head, and then covers him.

Because tegit is a transitive verb and needs a direct object: the person being covered.

So:

• eum = him
• direct object of tegit
• therefore accusative singular masculine

This is exactly parallel to English covers him, where him is the object form.

Pallio is ablative because it expresses the means or instrument: with a cloak/blanket.

This is a common use of the ablative in Latin.

So:

• pallium = cloak, covering, blanket-like cloth
• pallio = with a cloak / with a covering

In other words, pallio tells you what she uses to cover him.

Because Latin often expresses with by the ablative case alone, especially for means or instrument.

So instead of saying a separate word for with, Latin simply changes the noun’s ending:

• pallium → pallio

That ending already tells you with a cloak/covering.

In this sentence, eum is helpful because tegit needs an object, and Latin states clearly who is being covered.

Without eum, the sentence would sound incomplete unless some other direct object were supplied. Since the object is the brother, eum makes that explicit.

Latin can omit pronouns when they are subjects, because the verb ending often shows the subject. But object pronouns are not automatically included in the verb, so they are often stated.

Latin word order is more flexible than English word order because the case endings show each word’s function.

So this sentence could be rearranged in various ways without changing the basic meaning, as long as the endings stay the same.

Still, the given order is natural and clear:

• Soror first: the subject
• parvum pulvinum next: what she puts
• sub capite fratris: where
• et eum pallio tegit: the second action

Latin word order often helps with emphasis or style rather than basic grammar.

Because one subject can perform multiple actions in the same sentence.

Here soror is understood as the subject of both verbs:

• soror ... ponit
• (soror) ... tegit

Latin often states the subject once and then continues with additional verbs, just as English does in a sentence like The sister puts the pillow down and covers him.

Both are:

• 3rd person singular
• present tense
• active voice
• indicative mood

So they mean:

• ponit = she puts
• tegit = she covers

The subject is soror, so in English we translate them with she.

Strictly speaking, pallium originally means a cloak or covering garment. But depending on context, it can be translated more naturally as blanket, cover, or cloak.

In a sentence about someone lying down with a pillow under the head, English may prefer blanket or covering, even if the Latin word is literally cloak.

So this is a good example of translation based on context, not just dictionary meaning.

Classical Latin has no articles like English the or a/an.

So a word like soror can mean:

• a sister
• the sister

and pulvinum can mean:

• a pillow
• the pillow

The context determines which English article is best. That is why translation into English requires a little interpretation.