Quia memoria eius bona est, puella verba nova non facile obliviscitur.

Quia means because and introduces a subordinate clause giving the reason:

Quia memoria eius bona est = Because her memory is good

So the sentence has two parts:

• Quia memoria eius bona est = the reason
• puella verba nova non facile obliviscitur = the main statement

Latin often puts the reason clause first, just as English can.

Both are possible in Latin. Word order is flexible.

• memoria eius literally = memory of her / her memory
• eius memoria would mean the same thing

Here, memoria eius is just a natural way to phrase it. Latin often places the possessive word after the noun, but it does not have to.

This is a very common learner question.

• suus, sua, suum is a reflexive possessive adjective, used when the possessor is the subject of its own clause.
• eius means his / her / its and is used when the possessor is not the subject of that clause.

In memoria eius bona est, the grammatical subject of that clause is memoria, not puella. Because of that, Latin uses eius, not sua, to mean her.

So:

• memoria eius = her memory
• memoria sua would suggest its own memory, referring back to memoria, which would not make sense here

Memoria is nominative singular feminine.

It is nominative because it is the subject of est in the subordinate clause:

• memoria ... bona est = the memory is good

So the structure is:

• memoria = subject
• bona = adjective describing memoria
• est = verb

Because it agrees with memoria.

Memoria is:

• feminine
• singular
• nominative

So the adjective must match:

• bona = nominative singular feminine of bonus, bona, bonum

This is standard Latin adjective agreement: adjectives agree with the nouns they describe in gender, number, and case.

Yes, Latin could leave it out.

Because obliviscitur already shows a third-person singular subject, Latin does not need to state puella unless the writer wants clarity or emphasis.

So both of these are possible:

• puella verba nova non facile obliviscitur
• verba nova non facile obliviscitur

Including puella makes the sentence clearer for a learner and explicitly names the subject: the girl.

Because obliviscitur comes from obliviscor, oblivisci, a deponent verb.

A deponent verb:

• has passive forms
• but active meanings

So:

• obliviscitur looks like he/she/it is forgotten
• but actually means he/she/it forgets

Here it means:

the girl does not easily forget

This is one of the most important things to notice in the sentence.

Obliviscitur is:

• present tense
• third person singular
• indicative
• deponent

From obliviscor, oblivisci = to forget

So it means:

• she forgets
• or in this sentence with non facile: she does not easily forget

Verba nova means new words.

• verba is neuter plural
• nova agrees with verba, so it is also neuter plural

In this sentence they are the object of obliviscitur.

With obliviscor, Latin can use either the genitive or the accusative for the thing forgotten, especially depending on period and style. Here the accusative is used:

• verba nova = accusative plural neuter

So the sentence means that the girl does not easily forget new words.

Because Latin word order is flexible.

Both of these can mean new words:

• verba nova
• nova verba

The adjective nova agrees with verba, so the meaning is clear from the endings, not just from position.

Latin often changes word order for style, rhythm, or emphasis rather than strict grammatical necessity.

Because facile here is an adverb, modifying the verb obliviscitur.

• facile = easily
• non facile = not easily

It describes how she forgets.

So:

• non facile obliviscitur = she does not forget easily

If you used an adjective, it would not work the same way, because the sentence needs an adverb to modify the verb.

Latin often puts the verb at the end, especially in simple statements and subordinate clauses.

So:

• memoria eius bona est

is a very normal Latin order.

English usually prefers her memory is good, with the verb in the middle, but Latin is much freer. The endings tell you what each word is doing, so word order can be used more stylistically.

By itself, eius can mean:

• his
• her
• its

The form does not change for masculine, feminine, or neuter singular possession.

Here we understand it as her because the sentence is about puella, a girl.

So context tells us the correct English translation.

Not here in normal straightforward usage.

Quia usually takes the indicative when the reason is presented as a fact:

• Quia memoria eius bona est = Because her memory is good

That is exactly what is happening here: the sentence states a real reason.

In some authors and special contexts, different constructions can appear, but for a learner, the important point is:

• quia + indicative is the normal pattern for a factual because clause.

It breaks down like this:

• Quia = because
• memoria eius = her memory
• bona est = is good
• puella = the girl
• verba nova = new words
• non facile obliviscitur = does not easily forget

So the structure is:

Because her memory is good, the girl does not easily forget new words.

This is a good example of:

• a subordinate clause introduced by quia
• followed by a main clause
• with a deponent verb in the main clause