אל תבואי לכיתה בלי מחברת ובלי עט.

Because אל is the normal word for a negative command in Hebrew.

• אל תבואי = don’t come
• לא תבואי would usually mean something like you will not come or you are not coming, not a direct instruction.

So if a teacher is telling a student what not to do, אל is the expected choice.

תבואי is the 2nd person feminine singular form of לבוא (to come).

That means the sentence is addressed to one female.

Compare:

• אל תבואי = don’t come, said to one girl/woman
• אל תבוא = don’t come, said to one boy/man
• אל תבואו = don’t come, said to more than one person

So the -י ending is a big clue that the listener is feminine singular.

Formally, it is a future-tense form. But after אל, it functions as a negative imperative: a prohibition or instruction.

Hebrew often uses the future form this way because the regular imperative is mainly used for positive commands:

• בואי לכיתה = come to class
• אל תבואי לכיתה = don’t come to class

So in this sentence, תבואי looks like future, but its job is don’t come.

The preposition ל־ (to) attaches directly to the next word in Hebrew.

When ל־ combines with the definite article ה־ (the), the ה disappears in normal spelling, so:

• ל + הכיתה becomes לכיתה

This is very common with the short prepositions ב־, ל־, כ־.

One important detail: in unpointed Hebrew, לכיתה can represent either:

• to a class/classroom
• to the class/classroom

The spelling is the same without vowel marks, so context tells you which one is meant. In this sentence, the natural meaning is to class / to the classroom.

Repeating בלי makes the sentence clearer and more explicit.

• בלי מחברת ובלי עט = without a notebook and without a pen

This strongly emphasizes that both items are required.

Hebrew can sometimes omit the second בלי, but repeating it is very natural in instructions and removes ambiguity. It sounds a bit like saying:

• Don’t come without a notebook, and don’t come without a pen.

Yes.

The repeated בלי shows that each item matters separately. If the student comes:

• with a notebook but no pen, the instruction is still broken
• with a pen but no notebook, the instruction is still broken

So the practical meaning is: bring both.

Hebrew does not have a separate word for the indefinite article a/an.

So:

• מחברת can mean a notebook or just notebook, depending on context
• עט can mean a pen or just pen

Hebrew does have a definite article, ה־:

• מחברת = a notebook / notebook
• המחברת = the notebook

So in this sentence, the nouns are indefinite/generic: a notebook and a pen.

A rough pronunciation is:

al ta-VO-ee la-ki-TA bli mach-BE-ret u-vli et

A more detailed version with vowel marks would be:

אַל תָּבוֹאִי לַכִּיתָה בְּלִי מַחְבֶּרֶת וּבְלִי עֵט

A few pronunciation notes:

• תבואי stresses the VO: ta-VO-ee
• מחברת is mach-BE-ret
• עט is et
• ובלי is often pronounced u-vli here, not ve-vli

And ח in מחברת is the throaty sound, like the ch in German Bach, not the ch in chair.