המורה מסבירה לי בסבלנות כשאני לא מבין.

The prefix ה־ is the Hebrew definite article, meaning the.

So:

• מורה = a teacher / teacher
• המורה = the teacher

Hebrew attaches the directly to the noun instead of writing it as a separate word.

Not by itself, at least not clearly in this sentence.

The word מורה can refer to either a male teacher or a female teacher. What tells you the teacher is female here is the verb:

• מסבירה = explains (feminine singular)
• מסביר = explains (masculine singular)

So המורה מסבירה means the teacher is female.

Because the subject, the teacher, is understood here as feminine.

In Hebrew present tense, verbs agree with the subject in gender and number. So:

• הוא מסביר = he explains
• היא מסבירה = she explains

Since the sentence uses מסבירה, it matches a feminine singular subject.

מסבירה means explains or is explaining, depending on context.

It is the present tense form of the verb להסביר (to explain). Hebrew present tense often covers several English meanings, such as:

• explains
• is explaining
• sometimes even a habitual meaning like does explain

Here it most naturally means something like explains in a general or repeated situation.

Hebrew often does not need a subject pronoun if the verb already makes the subject clear.

For example:

• היא מסבירה = she explains
• מסבירה can already strongly suggest she explains because of the feminine verb form

In this sentence, the subject is already given as המורה, so adding היא would usually be unnecessary.

לי means to me.

It is made from:

• ל־ = to
• י = me / my suffix form

So Hebrew combines them into one word:

• לי = to me
• לו = to him
• לה = to her
• לנו = to us

This is very common in Hebrew. Instead of saying to me as two words, Hebrew often attaches the pronoun to the preposition.

בסבלנות means patiently.

Literally, it is built from:

• ב־ = with / in
• סבלנות = patience

So the literal sense is something like with patience.

Hebrew often uses a preposition + noun where English uses an adverb. So:

• בסבלנות = patiently
• literally: with patience

Because כש־ is a prefix meaning when (or sometimes as/while, depending on context), and it attaches directly to the next word.

So:

• כש
  • אני = כשאני
• meaning: when I

This is very normal in Hebrew. You will often see short function words attached as prefixes.

This is the normal Hebrew way to say it.

Breakdown:

• כשאני = when I
• לא = not
• מבין = understand / am understanding

So literally: when I not understand.

Hebrew negates present tense with לא placed before the verb.

Examples:

• אני מבין = I understand
• אני לא מבין = I do not understand

Because מבין shows that the speaker is male singular.

In Hebrew, the participle/present form often agrees with the person’s gender:

• אני מבין = I understand (said by a male)
• אני מבינה = I understand (said by a female)

So this sentence sounds like it is being said by a male speaker. If the speaker were female, the sentence would be:

המורה מסבירה לי בסבלנות כשאני לא מבינה.

Not exactly.

Hebrew present tense is broader than English present simple. In a sentence like this, it can express a habitual situation:

• המורה מסבירה לי בסבלנות כשאני לא מבין.
• The teacher explains to me patiently when I don’t understand.

It can describe something that generally happens, not only something happening right now.

So Hebrew present tense often covers ideas that English expresses with:

• explains
• is explaining
• habitual present

The basic order here is quite natural:

• המורה = subject
• מסבירה = verb
• לי = indirect object
• בסבלנות = manner
• כשאני לא מבין = time/condition-like clause

So literally: The teacher explains to me patiently when I don’t understand.

Hebrew word order is somewhat flexible, but this version is very natural and neutral. If you move things around, the sentence may still be grammatical, but the emphasis can change.

For example, בסבלנות could sometimes be placed elsewhere, but the original sentence sounds smooth and standard.

You would change מסבירה to the masculine form מסביר:

המורה מסביר לי בסבלנות כשאני לא מבין.

That means: The teacher explains to me patiently when I don’t understand, with a male teacher.

If the speaker were also female, then you would change מבין too:

המורה מסביר לי בסבלנות כשאני לא מבינה.

A simple pronunciation guide is:

ha-mo-RAH mas-BI-rah lee be-sav-la-NOOT kshe-a-NEE lo me-VEEN

A few notes:

• המורה = ha-mo-RAH
• מסבירה = mas-BI-rah
• בסבלנות = be-sav-la-NOOT
• כשאני = kshe-a-NEE
• מבין = me-VEEN

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