Kiam mi faras eraron, mia instruistino restas trankvila; ŝi nur diras, ke mi pardonu min mem kaj provu denove.

Kiam introduces a time clause, meaning when. Esperanto often puts this kind of subordinate clause first, just as English can:

• Kiam mi faras eraron, mia instruistino restas trankvila.
• Mia instruistino restas trankvila, kiam mi faras eraron.

Both are possible. The comma marks the end of the introductory subordinate clause.

Both are possible in Esperanto.

• mi eraras = I am making a mistake / I am mistaken
• mi faras eraron = I make a mistake / I make an error

The sentence uses the second version, which is very natural and parallels English make a mistake. Esperanto often allows both a simple verb and a verb+noun expression like this.

The -n marks the direct object.

In mi faras eraron, the thing being made is eraro, so it becomes eraron. Without -n, it would not be marked as the object.

A very literal breakdown is:

• mi = subject
• faras = do/make
• eraron = a mistake, as the object of faras

Instruistino means female teacher.

It is built from parts:

• instrui = to teach
• -ist- = a person connected with an activity or profession
• -in- = female
• -o = noun ending

So:

• instruisto = teacher
• instruistino = female teacher

A learner might also notice that Esperanto can explicitly mark female nouns this way.

Because trankvila describes the teacher, not the manner of the action.

Resti is a linking verb, like to remain or to stay in English. After linking verbs, Esperanto usually uses an adjective, not an adverb:

• ŝi restas trankvila = she remains calm

Compare:

• trankvila = calm, as a quality of a person or thing
• trankvile = calmly, describing how an action is done

So this sentence is about what she is like, not how she performs an action.

Yes. In Esperanto, adjectives agree with the nouns they describe in number and case.

Here both are singular and neither has -n, so we get:

• instruistino
• trankvila

If the noun were plural, the adjective would also be plural:

• instruistinoj restas trankvilaj

This agreement is about grammar, not gender. Adjectives do not have separate masculine and feminine forms.

The semicolon separates two closely connected independent clauses:

• mia instruistino restas trankvila
• ŝi nur diras, ke mi pardonu min mem kaj provu denove

A semicolon is stronger than a comma but weaker than a period. It shows that the two ideas are very closely related. A period would also be possible, but the semicolon gives a smooth connection.

Ke means that and introduces a subordinate clause.

So:

• ŝi diras, ke... = she says that...

In English, that is often omitted, but in Esperanto ke is normally stated clearly.

The -u ending is the volitive form. It is used for commands, requests, wishes, recommendations, and similar ideas.

Here it does not mean that I am forgiving myself as a plain fact. It means something more like:

• she says that I should forgive myself
• she tells me to forgive myself
• she urges me to try again

So:

• pardonas = forgives / am forgiving
• pardonu = forgive / should forgive
• provas = tries / am trying
• provu = try / should try

This is a normal way in Esperanto to report what someone says, advises, or urges.

ŝi nur diras, ke mi pardonu min mem kaj provu denove means that what she says is essentially an encouragement or instruction. The -u form makes that clear.

So even though the main verb is diras (says), the subordinate clause shows that her words are not just information; they are gentle advice.

Because the subject of that clause is mi, so the object referring back to the subject is min, not sin.

Important rule:

• sin is only for third person reflexive use
• for first and second person, Esperanto uses the ordinary pronouns

So:

• mi pardonas min = I forgive myself
• vi pardonas vin = you forgive yourself
• ŝi pardonas sin = she forgives herself

The word mem adds emphasis, like self in English:

• min = me
• min mem = myself, me myself

So pardonu min mem makes the reflexive idea especially clear.

Yes, it could. Pardonu min can already mean forgive myself in this context, because the subject is mi and the object is also min.

Adding mem makes it more explicit and emphatic:

• pardonu min = forgive me / forgive myself, depending on context
• pardonu min mem = forgive myself, with extra emphasis on myself

So mem is not strictly required, but it helps highlight the intended meaning.

Because the same subject continues across both verbs:

• ke mi pardonu min mem kaj provu denove

This means:

• that I forgive myself and try again

Esperanto often omits a repeated subject when it is clearly the same. You could repeat mi, but it is unnecessary here.

Nur means only or just.

Placed before diras, it focuses on the action of saying:

• ŝi nur diras... = she just says...

The idea is that the teacher does not get angry, panic, or overreact; she simply says this encouraging thing.

Word placement with nur often shows what is being limited or emphasized, and here it naturally modifies diras.

Denove is an adverb meaning again or anew.

It modifies provu:

• provu denove = try again

As an adverb, it ends in -e. Esperanto adverbs are often quite flexible in position, but provu denove is the most natural order here.