Jag har läst den här boken många gånger.

Because har läst is the present perfect, formed with har + a past participle.

In Swedish, this works very much like English have read. It is commonly used when:

• the action happened before now, and
• it is still relevant now, or
• the exact time is not the focus.

So Jag har läst den här boken många gånger means that, up to now, you have read this book many times.

If you instead said Jag läste den här boken många gånger, that would be the simple past and would sound more like you are talking about a finished past situation or a past time frame.

Because after har, Swedish uses the supine form of the verb, which in many verbs looks the same as the past participle used in English explanations.

For läsa:

• infinitive: läsa = to read
• present: läser = read / am reading
• past: läste = read
• supine: läst = read (used with har)

So:

• Jag läser = I read / I am reading
• Jag läste = I read
• Jag har läst = I have read

After har, you need läst, not läste.

Den här means this.

Swedish often expresses this with:

• den här for common gender nouns
• det här for neuter nouns
• de här for plural nouns

Since bok is a common gender word (en bok), Swedish uses den här:

• den här boken = this book

So den här is not two separate ideas here; together they function like English this.

Because Swedish normally needs the demonstrative structure den/det/de + här/där before the noun.

So you say:

• den här boken = this book
• det här huset = this house
• de här böckerna = these books

You normally do not say här boken in standard Swedish.

For English speakers, it may help to think of den här as a fixed pattern meaning this before a common gender noun.

Because Swedish usually uses double definiteness with demonstratives and many adjectives.

That means you often get:

1. a definite marker before the noun, and
2. the noun itself in the definite form.

So:

• den här boken literally looks like that/this here book-the
• but it simply means this book

This is normal Swedish grammar.

Compare:

• en bok = a book
• boken = the book
• den här boken = this book

English does not do this, so it often feels strange at first.

Många gånger means many times.

It is an adverbial phrase telling you how often the action has happened. In Swedish, frequency expressions like this commonly come later in the sentence.

So the structure is:

• Jag = subject
• har läst = verb phrase
• den här boken = object
• många gånger = frequency expression

This word order is very natural in Swedish.

Usually, Jag har läst den här boken många gånger is the most natural order.

But Swedish can move parts around for emphasis. For example:

• Den här boken har jag läst många gånger.

This puts extra focus on den här boken.

Still, for a learner, the safest and most neutral order is:

• Jag har läst den här boken många gånger.

You add inte after har:

• Jag har inte läst den här boken många gånger.

This means I haven’t read this book many times.

A very important pattern in Swedish is that in main clauses, inte usually comes after the finite verb. Here, the finite verb is har.

So:

• Jag har inte läst ... not
• Jag inte har läst ...

Yes. Denna bok also means this book.

But there is a difference in style:

• den här boken is very common and natural in everyday speech
• denna bok is often more formal, written, or literary

So in normal conversation, den här boken is usually the better choice.

• den här boken = this book
• den där boken = that book

So:

• här points to something near the speaker
• där points to something farther away, or something already mentioned

This is similar to English this vs that.

Because Swedish verbs do not change according to the subject the way English verbs sometimes do.

In English:

• I have
• he has

In Swedish:

• jag har
• du har
• han har
• vi har

The verb form stays the same.

This is one reason Swedish verb conjugation is often easier than English for learners.

No. In this sentence, läst does not change to match the noun.

Swedish does not make the verb form agree with the object here. The object is den här boken, but läst stays the same.

So whether the object is singular, plural, common gender, or neuter, you still use:

• har läst

Examples:

• Jag har läst boken.
• Jag har läst brevet.
• Jag har läst böckerna.

The form läst stays unchanged.

Exactly as written is already natural. In speech, though, a few things may sound slightly reduced:

• jag is often pronounced more like ya
• har may sound shorter in casual speech
• den här is often said smoothly as one unit, with stress on här

But grammatically, the written sentence is completely normal and natural:

• Jag har läst den här boken många gånger.

So as a learner, this is a very good model sentence to use.