הסופר הזה כותב לאט, אבל כל ספר שלו מעניין מאוד.

In Hebrew, demonstratives like הזה (this) usually come after the noun:

• הסופר הזה = this writer
• literally: the writer this

This is the normal Hebrew pattern. Unlike English, you do not usually say this writer with the demonstrative first.

Also, when the noun is definite, the demonstrative is definite too, so both words take ה־:

• הסופר הזה
• הספר הזה
• הילד הזה

Because Hebrew marks definiteness on both the noun and the demonstrative in this structure.

So:

• סופר = a writer
• הסופר = the writer
• הסופר הזה = this writer

This is standard Hebrew grammar. If you want to say this X, you normally use:

• ה־ + noun + ה־ + demonstrative

Examples:

• הילד הזה = this boy
• האישה הזאת = this woman
• הספר הזה = this book

כותב is the present tense form of the verb לכתוב (to write).

In Hebrew, present tense forms behave a bit like participles and must agree with the subject in gender and number.

Here the subject is:

• הסופר הזה = this writer

Since סופר is masculine singular, the present tense form is:

• כותב = masculine singular

Other forms would be:

• כותבת = feminine singular
• כותבים = masculine plural / mixed plural
• כותבות = feminine plural

So:

• הסופר הזה כותב = this writer writes / is writing

It can mean either one, depending on context.

Hebrew present tense often covers both:

• he writes
• he is writing

So הסופר הזה כותב לאט could mean:

• This writer writes slowly
• This writer is writing slowly

In this sentence, because it sounds like a general description, English would usually translate it as:

• This writer writes slowly

לאט means slowly, and Hebrew commonly places adverbs after the verb:

• כותב לאט = writes slowly

That word order is very natural in Hebrew.

Compare:

• הוא מדבר מהר = he speaks quickly
• היא הולכת לאט = she walks slowly

So כותב לאט is just the normal way to say writes slowly.

Yes. אבל means but, and it is the most common everyday word for it.

So:

• הסופר הזה כותב לאט, אבל...
• This writer writes slowly, but...

It connects two contrasting ideas:

1. He writes slowly.
2. Even so, every book of his is very interesting.

Because כל can mean every when followed by a singular noun.

So:

• כל ספר שלו = every book of his

If you said:

• כל הספרים שלו

that would usually mean:

• all his books

So the difference is:

• כל ספר שלו = every one of his books, considered individually
• כל הספרים שלו = all of his books, as a group

In your sentence, the meaning is:

• every book of his is very interesting

After כל meaning every, Hebrew normally uses a singular noun without the definite article:

• כל ספר = every book
• כל ילד = every child
• כל יום = every day

So:

• כל ספר שלו = every book of his

Using הספר here would not be the normal structure for every book.

Hebrew often expresses possession with:

• noun + possessive word

So:

• ספר שלו = a book of his / his book
• literally: book of-his

This is a very common and natural structure in modern Hebrew.

You can compare:

• הבית שלה = her house
• החברים שלהם = their friends

In this sentence:

• כל ספר שלו = every book of his

Yes, ספרו also means his book.

But there is an important usage difference:

• ספרו = more literary, formal, or compact
• ספר שלו = very common in everyday modern Hebrew

So both are correct, but כל ספר שלו sounds very natural in ordinary spoken and written Hebrew.

Because כל ספר שלו is grammatically singular.

Even though every book of his refers to many books in meaning, Hebrew treats כל ספר as each individual book, so the adjective stays singular:

• כל ספר שלו מעניין = every book of his is interesting

And since ספר is masculine singular, the adjective is also masculine singular:

• מעניין

If the noun were feminine singular, you would use the feminine form:

• כל מכונית שלה מעניינת = every car of hers is interesting

מעניין means interesting, and מאוד means very.

So:

• מעניין מאוד = very interesting

Hebrew often places מאוד after the adjective or adverb it modifies:

• יפה מאוד = very beautiful
• טוב מאוד = very good
• מעניין מאוד = very interesting

That is the normal word order.

Because Hebrew usually puts מאוד after the word it modifies.

So Hebrew says:

• מעניין מאוד
• literally: interesting very

This is one of the common word-order differences between Hebrew and English.

Yes. הסופר הזה means this writer, so it refers to a specific person.

The sentence describes him in two ways:

• he writes slowly
• every book of his is very interesting

So the whole sentence gives a contrast:

• his writing process is slow,
• but the result is excellent or engaging.

A simple pronunciation guide is:

ha-so-FER ha-ZE ko-TEV le-AT, a-VAL kol SE-fer she-LO me-an-YEN me-OD

A few notes:

• הסופר = ha-so-FER
• הזה = ha-ZE
• כותב = ko-TEV
• לאט = le-AT
• אבל = a-VAL
• שלו = she-LO
• מעניין = me-an-YEN
• מאוד = me-OD

Yes. סופר can mean writer or author, depending on context.

In a sentence like this, English could translate it as:

• This writer writes slowly, but every book of his is very interesting.
• or This author writes slowly, but every book of his is very interesting.

Both are reasonable, depending on the tone and context.

It breaks down like this:

• הסופר הזה = this writer
• כותב לאט = writes slowly
• אבל = but
• כל ספר שלו = every book of his
• מעניין מאוד = is very interesting

So the pattern is:

[subject] + [verb + adverb], but [new subject phrase] + [adjective phrase]

This is a very common Hebrew sentence pattern.