המורה דורשת שנכתוב את התשובה במחברת.

Because the verb agrees with המורה. In Hebrew, מורה can mean either male teacher or female teacher, but the verb tells you the gender here.

• דורש = masculine singular
• דורשת = feminine singular

So this sentence specifically means that the teacher is female.

דורשת comes from the root ד-ר-ש and means demands, requires, or insists on. In this sentence, it means the teacher is requiring something to be done.

It is the feminine singular present-tense form, but Hebrew present forms are often used in ways that English would translate with present simple, like demands or requires.

Because it is made of two parts joined together:

• ש־ = that
• נכתוב = we will write / we write

So שנכתוב literally means that we write or that we will write.

Hebrew often attaches ש־ directly to the next word instead of writing it separately.

This is very common in Hebrew. After verbs like demand, ask, want, or request, Hebrew often uses ש־ plus a future-form verb, even when English would say that we write.

So:

• דורשת שנכתוב = demands that we write

Even though נכתוב is formally a future form, in this kind of sentence it functions like a subjunctive-style idea: something the speaker wants or requires to happen.

The נ־ marks first person plural, so it means we.

Here are some related forms of the same verb:

• אכתוב = I will write
• תכתוב = you will write / she will write
• יכתוב = he will write
• נכתוב = we will write

So שנכתוב means that we write / that we will write.

In Hebrew, את marks a definite direct object. It does not have a separate English translation here, but it tells you that the following noun is the specific thing receiving the action.

So:

• נכתוב תשובה = write an answer
• נכתוב את התשובה = write the answer

Because התשובה is definite (the answer), Hebrew uses את before it.

Because the sentence is talking about a specific answer, not just any answer.

• תשובה = an answer
• התשובה = the answer

Since the teacher is requiring the students to write a particular answer, Hebrew uses the definite form התשובה.

במחברת means in the notebook.

It comes from:

• ב־ = in
• המחברת = the notebook

When ב־ is attached to a definite noun with ה־, the forms combine:

• ב + המחברת → במחברת

This kind of contraction is very common in Hebrew:

• בבית = in the house
• בספר = in the book
• במחברת = in the notebook

Usually מחברת means a notebook or exercise book, especially the kind used for schoolwork. In this sentence, it most naturally means the notebook where the students are expected to write their answer.

So במחברת here is not just any abstract in writing idea; it usually points to an actual notebook.

Yes, Hebrew can sometimes express similar ideas in different ways, but דורשת שנכתוב is very natural here.

A related structure is:

• המורה דורשת מאיתנו לכתוב את התשובה במחברת
  = The teacher demands from us to write the answer in the notebook

Both are possible, but דורשת שנכתוב is a very standard and smooth way to say demands that we write.

A natural pronunciation is:

ha-mo-RA do-RE-shet she-nikh-TOV et ha-tshu-VA ba-makh-BE-ret

A few pronunciation notes:

• המורה = ha-morá
• דורשת = do-réshet
• שנכתוב = she-nikhtóv
• התשובה = ha-tshuvá
• במחברת = ba-makhbéret

The stress is usually near the end in several of these words.