kore ha anata no hon desu.

When は is used as the topic particle, it is pronounced wa, not ha.

So in これはあなたの本です, you read it as:

kore wa anata no hon desu

But when は is part of a normal word, it is usually pronounced ha.

This is just one of the standard spelling/pronunciation rules in Japanese.

は marks the topic of the sentence.

In これはあなたの本です, the topic is これ (this).
So the sentence is structured like:

As for this, it is your book.

That is why Japanese learners often hear that は means something like as for... rather than simply translating it as is.

Japanese sentence structure is often different from English.

This sentence works like this:

• これ = this
• は = topic marker
• あなたの本 = your book
• です = polite is/am/are

So Japanese is not really following the English order This is your book word-for-word.
Instead, it is more like:

As for this, your book it is.

Also, Japanese puts modifiers before the noun, so your book becomes あなたの本.

の often shows a relationship between two nouns.
In this sentence, it shows possession:

あなたの本 = your book

So の is often similar to English 's or of.

Some examples:

• わたしの本 = my book
• 日本の車 = Japanese car / car of Japan
• 先生の名前 = teacher's name

It does not always mean ownership only; it connects nouns in many ways.

です is the polite copula. In many beginner sentences, it works like is / am / are.

So here it completes the statement politely:

これはあなたの本です。

You can think of it as the polite ending that makes the sentence sound complete and courteous.

A less polite version would be:

これはあなたの本だ。

But beginners usually learn です first because it is more polite and safer to use.

Not always.

Although あなた does mean you, Japanese often avoids saying you when the context is clear. People also often use:

• the person's name
• their title
• or just leave it out completely

So while あなたの本です is grammatically correct, in real conversation it can sometimes sound more direct than English your.

For example, if you are talking to Tanaka, Japanese might prefer:

田中さんの本です。
It's Tanaka's book.

Or, if the context is obvious, just:

これは本です。
depending on the situation.

これ means this by itself. It can stand alone as a noun-like word.

So:

• これは = this
  • topic marker

But この must be followed by a noun:

• この本 = this book

So these are different:

• これはあなたの本です。 = This is your book.
• この本はあなたのです。 = This book is yours.

A good rule:

• これ / それ / あれ = stand alone
• この / その / あの = must come before a noun

No. Japanese is normally written without spaces.

So the standard writing is:

これはあなたの本です。

Spaces are often added in beginner materials to make the parts easier to see:

これ　は　あなた　の　本　です。

That is a learning aid, not normal everyday writing.

Yes. The usual beginner form is:

これはあなたの本ですか。
Is this your book?

You just add か at the end.

In casual speech, people may also ask with rising intonation instead of か, but ですか is the standard polite pattern beginners learn first.

Sometimes, but it changes the nuance.

• これはあなたの本です。
  As for this, it is your book.

This is neutral and very natural when talking about this as the topic.

If you said:

• これがあなたの本です。

it would sound more like:

This is your book
with extra focus or identification, as if distinguishing this one from other things.

So は is the more basic choice here, while が adds emphasis or contrast depending on context.

Yes, 本 is pronounced hon.

The n sound in Japanese is a special nasal sound, so it may not sound exactly like English hon in all contexts, but hon is the standard beginner romanization.

So the whole sentence is commonly written in romaji as:

Kore wa anata no hon desu.