Ne frapu ĉe la pordo tro forte, ĉar la infano dormas.

Frapu is the -u form, which is used for commands, requests, instructions, or urges in Esperanto.

So:

• frapas = is knocking / knocks
• frapi = to knock
• frapu = knock! / do knock

Because the sentence is telling someone not to do something, Esperanto uses ne + -u form:

• Ne frapu = Don’t knock

This is the normal way to make a negative command in Esperanto.

In Esperanto, ne by itself does not turn a normal present-tense verb into a command.

• Ne frapas would mean does not knock / are not knocking, which is just a statement.
• Ne frapu means don’t knock, which is a command or request.

So the pattern is:

• Fermu la pordon. = Close the door.
• Ne fermu la pordon. = Don’t close the door.

Because la pordo is not the direct object here. In this sentence, ĉe la pordo is a prepositional phrase.

• ĉe is a preposition
• nouns after a preposition normally do not take -n
• so: ĉe la pordo, not ĉe la pordon

This expression corresponds to English at the door or on/at the door in the sense of knocking there.

A learner might expect frapi la pordon, but that would sound more like hit the door as a physical object. frapi ĉe la pordo expresses the idea of knocking at it.

Ĉe usually means at, by, or near.

In this sentence, ĉe la pordo gives the location where the knocking happens: at the door.

It is one of those cases where Esperanto uses a preposition that may not match English word-for-word. English often says knock on the door, but Esperanto here uses ĉe la pordo.

Both words modify the verb frapu.

• tro = too
• forte = strongly, loudly, hard

Together:

• tro forte = too hard / too loudly

So the sentence is not just saying don’t knock; it says don’t knock too hard.

Because the word is modifying a verb, not a noun.

In Esperanto:

• forta = strong (adjective)
• forte = strongly / hard (adverb)

Here, the sentence describes how someone should not knock, so an adverb is needed:

• frapu forte = knock hard

If you used forta, it would need to describe a noun, such as:

• forta sono = a loud/strong sound

Ĉar means because.

It introduces the reason:

• Ne frapu ĉe la pordo tro forte, ĉar la infano dormas.

So the second part explains why the speaker gives the command.

This is a very common conjunction in Esperanto for giving a reason.

La is the definite article, meaning the.

So:

• la infano = the child
• infano = a child / child

Esperanto uses la when the speaker has a specific person or thing in mind. In this sentence, it is a particular child whose sleep matters in the situation.

No. Infano is gender-neutral and simply means child.

If you wanted to specify gender, you would use:

• knabo = boy
• knabino = girl

But Esperanto often leaves gender unspecified unless it matters.

Because it describes what is happening now.

• dormas = is sleeping / sleeps

In this context, it naturally means is sleeping. Esperanto present tense often covers both the simple present and the English present progressive, depending on context.

So la infano dormas can mean:

• the child sleeps
• the child is sleeping

Here, the situation clearly makes is sleeping the natural interpretation.

The word order here is natural, but Esperanto is more flexible than English because the grammar endings make relationships clearer.

This sentence uses a very standard order:

• Ne frapu = command
• ĉe la pordo = location
• tro forte = manner/degree
• ĉar la infano dormas = reason

You can sometimes move parts around for emphasis, but the original order is smooth and neutral.

For a learner, this sentence is a good model to copy.

Because ĉar introduces a subordinate clause giving the reason.

So the sentence is divided into:

• main clause: Ne frapu ĉe la pordo tro forte
• subordinate clause: ĉar la infano dormas

Using a comma before ĉar is normal and helps readability.

Esperanto pronunciation is very regular:

• fra = like frah
• pu = poo

So frapu is approximately FRAH-poo.

Also, stress in Esperanto normally falls on the second-to-last syllable, so the stress is on FRA:

• FRA-pu

Ĉ is pronounced like English ch in church.

So:

• ĉe sounds roughly like cheh
• ĉar sounds roughly like char

This letter always has the same sound in Esperanto.

Yes. Esperanto often leaves that kind of detail to context.

• forte can refer to force, strength, or loudness depending on the action involved.
• With knocking, English might say too hard or too loudly.
• Esperanto tro forte can cover that idea naturally.

So the phrase is broad enough to fit the situation without needing extra words.