Larva prope siparium iacet.

Because prope is acting as a preposition here, and as a preposition it takes the accusative.

So:

• prope = near
• siparium = curtain
• prope siparium = near the curtain

Even though English uses near without changing the noun, Latin shows the relationship by putting siparium into the accusative form.

Iacet is:

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

It comes from iaceō, iacēre, meaning to lie, to be lying, or to lie somewhere.

So iacet means:

• he/she/it lies
• he/she/it is lying

In this sentence, it agrees with larva, which is singular, so iacet means the larva lies / is lying.

Latin does not normally use articles like English the and a/an.

So larva can mean:

• a larva
• the larva

and siparium can mean:

• a curtain
• the curtain

The exact choice in English depends on the context or the translation already given.

We know because larva is in the nominative singular, the case normally used for the subject of a sentence.

Also, the verb iacet is singular, so it matches a singular subject.

So the structure is:

• Larva = subject
• prope siparium = prepositional phrase
• iacet = verb

In other words: The larva lies near the curtain.

Yes. Latin word order is much freer than English word order because the endings show the grammatical roles.

So all of these could mean roughly the same thing:

• Larva prope siparium iacet.
• Larva iacet prope siparium.
• Prope siparium larva iacet.
• Iacet larva prope siparium.

The differences are mainly about emphasis, not basic meaning.

The given order, with the verb at the end, is very normal in Latin.

No. Prope can be used in more than one way.

Here it is a preposition meaning near, followed by the accusative:

• prope siparium = near the curtain

But prope can also be used as an adverb in some contexts, meaning something like nearby or almost depending on usage.

In this sentence, though, it is definitely a preposition.

Larva can have a few related meanings in Latin, depending on context, such as:

• ghost
• specter
• mask

In beginner texts, the exact meaning is usually fixed by the context or by the translation you are given. Grammatically, though, it is a first-declension noun, and here it is nominative singular.

So even if the exact English meaning varies by context, its job in the sentence is the same: it is the subject.

Siparium is a neuter second-declension noun.

Its form here is:

• accusative singular: siparium

For a neuter second-declension noun, the nominative singular and accusative singular are often the same in form, both ending in -um.

So here you identify its case not by the ending alone, but by its relationship with prope, which requires the accusative.

Here iacet means lies or is lying, not lies down.

That is an important distinction:

• to lie down = to move into a lying position
• to lie / be lying = to already be in that position

Latin iaceō, iacēre usually describes the state of lying, not the action of lying down.

So the sentence describes where the larva is, not the moment when it goes down.

A reasonable Classical pronunciation would be:

LAR-wa PRO-pe si-PA-ri-um YA-ket

A few helpful points:

• v is pronounced like English w
• c is always hard, like k (though there is no c here)
• i before a vowel can sound like y, so iacet begins like ya-
• ae would sound like ai, but it does not appear here

So:

• larva ≈ LAR-wa
• prope ≈ PRO-pe
• siparium ≈ si-PA-ri-um
• iacet ≈ YA-ket

Because Latin very often places the verb at or near the end of the sentence.

That is not a strict rule, but it is a very common and natural pattern. In this sentence:

• Larva = subject
• prope siparium = location phrase
• iacet = verb at the end

This can sound slightly more formal or literary to an English speaker, but in Latin it is completely normal.