המורה אמרה שיש שיפור בכתיבה שלי.

Because המורה (the teacher) can refer to either a male or a female teacher. The verb tells you which one it is here:

• אמרה = she said
• אמר = he said

So this sentence specifically means the female teacher said...

If the teacher were male, it would be:

• המורה אמר שיש שיפור בכתיבה שלי.

שיש is made of two parts:

• ש־ = that
• יש = there is / there are

So שיש means that there is or that there are.

In this sentence:

• המורה אמרה שיש שיפור...
• The teacher said that there is improvement...

In natural English, you might also translate it more smoothly as The teacher said my writing has improved or The teacher said there is improvement in my writing.

יש is the Hebrew way to express existence: there is or there are.

Examples:

• יש ספר = There is a book
• יש ספרים = There are books

In your sentence:

• יש שיפור = there is improvement

Hebrew often uses this structure where English might prefer a different wording. So instead of saying something like my writing improved, Hebrew can say there is improvement in my writing.

Because Hebrew usually does not use a present-tense verb meaning is/are in ordinary sentences.

So where English says:

• My writing is better

Hebrew often says something more like:

• יש שיפור בכתיבה שלי
• There is improvement in my writing

The word יש is not the normal verb to be. It is an existential word meaning there is/there are.

שיפור means improvement.

It comes from the root ש־פ־ר, which is connected to improving or making better.

So:

• יש שיפור = there is improvement
• שיפור גדול = a big improvement

In this sentence, it means the teacher noticed that the learner’s writing has gotten better.

The preposition ב־ usually means in, at, or sometimes with / in the area of, depending on context.

Here:

• בכתיבה שלי = in my writing

So:

• יש שיפור בכתיבה שלי
• literally: There is improvement in my writing

Without ב־, the meaning would not sound right here. Hebrew needs that preposition with שיפור in this kind of expression.

Hebrew usually puts the possessive after the noun:

• הכתיבה שלי = my writing
• literally: the writing of mine

So:

• שלי = my / mine
• כתיבה שלי = my writing

This is very normal Hebrew word order. English says my writing, but Hebrew says writing my/mine.

Actually, כתיבה שלי is already definite because it is possessed.

In Hebrew, a noun with שלי / שלך / שלו etc. is naturally definite:

• ספר שלי = my book
• כתיבה שלי = my writing

Because it is already specific, Hebrew often does not add ה־ to the noun in this structure.

So:

• בכתיבה שלי = in my writing

is perfectly normal.

No. שלי stays the same regardless of the gender of the noun.

For example:

• הספר שלי = my book
• המחברת שלי = my notebook
• הכתיבה שלי = my writing

So even though כתיבה is feminine, the possessive is still שלי.

Yes, כתיבה is a feminine noun.

You can tell in part because many feminine nouns end in ־ה, though that is not the only pattern in Hebrew.

In this sentence, it does not affect שלי, but it would matter with adjectives. For example:

• כתיבה טובה = good writing
• מכתב טוב = a good letter (masculine noun)

So yes, כתיבה is feminine, but in your sentence the main gender clue you really notice is אמרה, which shows the teacher is female.

A fairly literal translation is:

• The teacher said that there is improvement in my writing.

Word by word:

• המורה = the teacher
• אמרה = said / she said
• שיש = that there is
• שיפור = improvement
• בכתיבה = in writing / in the writing
• שלי = my / mine

A more natural English translation might be:

• The teacher said my writing has improved.
• The teacher said there has been improvement in my writing.

Usually בכתיבה שלי suggests my writing in general—my writing ability, style, or overall performance.

If someone wanted to talk very clearly about one specific composition or assignment, Hebrew might use a more specific noun, such as:

• בחיבור שלי = in my essay
• בטקסט שלי = in my text
• בעבודה שלי = in my assignment/work

So this sentence most naturally sounds like a general comment on your writing.

Because Hebrew often likes expressions with יש + noun:

• יש שיפור = there is improvement
• יש בעיה = there is a problem
• יש שינוי = there is a change

This is a very common and natural Hebrew pattern. English often prefers a verb:

• my writing improved

But Hebrew often prefers:

• יש שיפור בכתיבה שלי
• there is improvement in my writing

Both languages can express the same idea, but they package it differently.

Yes. יש works for both there is and there are.

For example:

• יש שיפור = there is improvement
• יש שיפורים = there are improvements

So Hebrew does not change יש the way English changes is/are.

Only the past-tense verb would change:

• המורה אמר שיש שיפור בכתיבה שלי.

Compare:

• אמרה = she said
• אמר = he said

The rest of the sentence stays the same.