kanozyo ha syouri wo yorokobimasita.

When は is used as a particle marking the topic, it is pronounced wa. This is a special historical spelling rule in Japanese.

So:

• 彼女は = kanojo wa

If は were part of a normal word, it would usually be pronounced ha.

は marks the topic of the sentence. It gives a sense like as for her, ...

So 彼女は勝利を喜びました is structurally like:

• As for her, she rejoiced at the victory.

If you used が instead, it would focus more directly on she as the subject, often with a more identifying or contrastive feeling, such as she is the one who rejoiced.

In a simple, neutral statement like this, は is very natural.

Because 喜ぶ often uses を to mark the thing that someone is pleased about or rejoices over.

So:

• 勝利を喜ぶ = to rejoice at the victory / to be pleased about the victory

This is one of those cases where Japanese and English do not match word-for-word. English might use at, about, or over, but Japanese uses を with this verb pattern.

So it is best to learn it as:

• X を 喜ぶ = to be pleased about X

The dictionary form is 喜ぶ (yorokobu), meaning to rejoice or to be pleased.

It changes like this:

• 喜ぶ → dictionary form
• 喜びます → polite non-past
• 喜びました → polite past

So -ました makes it polite and past tense.

This is a godan verb, specifically one ending in -ぶ.

Japanese normally puts the main verb at the end. A very common basic order is:

• topic + object + verb

So here:

• 彼女は = topic
• 勝利を = object / thing rejoiced over
• 喜びました = verb

This is different from English, but it is one of the most important sentence patterns in Japanese.

Yes, 彼女 can often be omitted if the person is already clear from context. Japanese frequently leaves out subjects and topics when they are understood.

So in conversation, you might simply hear:

• 勝利を喜びました。

Also, 彼女 does not always mean only she. Depending on context, it can also mean girlfriend. In this sentence, though, it is understood as she.

The sentence is read:

• 彼女 = kanojo
• は = wa
• 勝利 = shōri
• を = o
• 喜びました = yorokobimashita

So the full reading is:

• kanojo wa shōri o yorokobimashita

A helpful note: 勝利 has a long vowel in shōri.

It is often a little stronger or more active than simply was happy. 喜ぶ suggests showing or feeling joy at something specific.

So depending on context, it can be translated as:

• she rejoiced at the victory
• she was pleased about the victory
• she was happy about the victory

In natural English, rejoiced can sound a bit formal, so translations like was happy about or was pleased about are often used, even though 喜ぶ has a slightly stronger sense than plain be happy.