kanozyo ha eigo mo nihongo mo hanaseru.

は marks the topic of the sentence. It tells you what the sentence is about.

So 彼女は means something like:

• As for her...
• She...

It does not mean the same thing as an English subject marker exactly. It sets up 彼女 as the topic, and the rest of the sentence says something about her.

Using も twice in a pattern like AもBも means both A and B.

So:

• 英語も日本語も = both English and Japanese

This is a very common pattern in Japanese. It can also carry the feeling of also, depending on context, but in a sentence like this the most natural understanding is both English and Japanese.

It is doing both jobs a little, but in this sentence the natural result is both.

Basic idea:

• も often means also / too
• but AもBも usually means both A and B

So even though も by itself often gets translated as also, this repeated pattern is best understood as:

• both English and Japanese

Because も is replacing that particle here.

In Japanese, words like も can attach where another particle might otherwise appear. So instead of saying something like:

• 英語が話せる
• 日本語が話せる

the sentence uses:

• 英語も日本語も話せる

With potential expressions like 話せる (can speak), the language being spoken is often marked with が, but in real Japanese it is very common for particles to be omitted or replaced by a focus particle like も.

話せる is the potential form of 話す.

• 話す = to speak
• 話せる = can speak / be able to speak

So the sentence uses the verb form for ability.

A learner might think of it as:

• dictionary form: 話す
• potential form: 話せる

Because Japanese sentences normally put the verb at the end.

This sentence follows a very typical Japanese order:

• topic: 彼女は
• things being talked about: 英語も日本語も
• verb: 話せる

English and Japanese organize sentences differently. In English you say She can speak English and Japanese, but in Japanese the main verb usually comes last.

It could, but it would be a slightly different structure.

• 英語と日本語 = English and Japanese
• 英語も日本語も = both English and Japanese

So と is a plain and for listing things, while も adds emphasis to each item and gives the feeling of both.

For example:

• 英語と日本語が話せる = can speak English and Japanese
• 英語も日本語も話せる = can speak both English and Japanese

Both are natural, but this sentence specifically emphasizes that she can speak both languages.

Not always. 彼女 can mean:

• she / her
• girlfriend

The correct meaning depends on context.

In this sentence, 彼女は英語も日本語も話せる, the most likely meaning is she, because it sounds like a normal statement about a woman. But in another context, it could mean my girlfriend or his girlfriend if that has already been established.

Yes, very often.

Japanese frequently leaves out subjects and topics when they are already understood from context. So if everyone already knows who you are talking about, you could simply say:

• 英語も日本語も話せる。

That would still mean something like (She) can speak both English and Japanese, depending on context.

No, normal Japanese is usually written without spaces.

A native-style version would be:

• 彼女は英語も日本語も話せる。

The spaces are often added in teaching materials to help beginners see the parts more clearly.

Yes, it could.

By itself, 英語も日本語も話せる clearly says that she can speak English and Japanese, but it does not necessarily mean those are the only two languages she can speak.

It simply states that those two are included. Context would tell you whether the speaker means:

• exactly those two, or
• those two among others

It is relatively plain and neutral, and it leans casual because it ends with 話せる rather than 話せます.

Compare:

• 彼女は英語も日本語も話せる。 = plain style
• 彼女は英語も日本語も話せます。 = polite style

Both are grammatically fine. The difference is mainly the level of politeness.