La skizo montras ĉiun objekton.

La is the definite article, equivalent to English the.

A very useful point for learners: la never changes. It does not have different forms for:

• singular vs. plural
• subject vs. object
• masculine vs. feminine

So you always use la exactly as it is.

In Esperanto, -as marks the present tense.

So montras means shows / is showing.

Some useful tense endings are:

• -as = present
• -is = past
• -os = future
• -us = conditional
• -u = command / jussive
• -i = infinitive

Also, Esperanto verbs do not change depending on the subject. So:

• mi montras
• vi montras
• li montras
• ili montras

all use the same verb form montras.

Because skizo is the subject, while objekton is the direct object.

In Esperanto, the ending -n usually marks the direct object of the verb.

So in this sentence:

• La skizo = the subject, the thing doing the showing
• montras = the verb
• ĉiun objekton = the direct object, the thing being shown

That is why objekton gets -n, but skizo does not.

Because ĉiun describes objekton, and words that go together often have to agree.

Here ĉiu is acting like a determiner meaning each or every, and it agrees with objekton in case. Since objekton is a direct object and has -n, ĉiun also takes -n:

• ĉiu objekto = each object
• ĉiun objekton = each object, as a direct object

This is part of Esperanto’s agreement system.

Because the noun phrase is a direct object, and the -n goes on the noun as well.

In Esperanto, if a noun is a direct object, its modifiers generally match it. So both words show the accusative:

• ĉiu objekto = each object
• ĉiun objekton = each object as the direct object

Using ĉiun objekto would be incomplete, because the noun itself would be missing the object ending.

These are related forms:

• ĉiu = each / every one
• ĉiun = each / every one as a direct object
• ĉiuj = all, all of them, every one of them in plural
• ĉiujn = all of them as a direct object

In your sentence, ĉiun is singular accusative because it means each individual object.

Compare:

• Mi vidas ĉiun objekton. = I see each object.
• Mi vidas ĉiujn objektojn. = I see all the objects.

The first is more distributive: one by one, each one. The second is plainly plural: all of them.

Because ĉiu is grammatically singular in Esperanto, just like each in English.

Even though each object refers to many items overall, it treats them individually, one at a time. So the noun stays singular:

• ĉiu objekto = each object
• ĉiun objekton = each object as an object

If you wanted a plural idea like all objects, you would use:

• ĉiuj objektoj
• ĉiujn objektojn

So singular here is completely normal.

Yes. Esperanto word order is fairly flexible because the -n ending helps show what is the object.

The most neutral order is:

• La skizo montras ĉiun objekton.

But you could also say:

• Ĉiun objekton montras la skizo.

That gives more emphasis to ĉiun objekton.

Even so, learners should usually start with the normal subject–verb–object order, because it is the clearest and most common.

Yes. Montri is normally transitive, meaning it takes a direct object.

So you can say:

• La skizo montras objekton.
• Li montras la vojon.
• Ŝi montris la bildon.

In your sentence, the thing being shown is ĉiun objekton, so the direct object ending -n is exactly what you would expect.

Ĉ is pronounced like English ch in church.

So ĉiun begins with that ch sound.

A rough pronunciation guide for the whole word is:

• ĉi-un
• approximately CHEE-oon

The two vowels are both pronounced clearly, not merged into a vague English-style sound.

A careful pronunciation would be approximately:

lah SKEE-zoh MON-trahs CHEE-oon ob-YEK-tohn

A few notes:

• skizo → SKEE-zoh
• montras → MON-trahs
• ĉiun → CHEE-oon
• objekton → ob-YEK-tohn

And some pronunciation reminders:

• Every vowel is pronounced clearly.
• Stress in Esperanto normally falls on the second-to-last syllable:
  • SKI-zo
  • MON-tras
  • ĈI-un
  • ob-JEK-ton

Yes. The ending -o marks a noun in Esperanto.

So:

• skizo = a noun
• objekto = a noun

This is one of the most regular features of Esperanto:

• -o = noun
• -a = adjective
• -e = adverb
• -i = infinitive verb

That means Esperanto words are often easy to identify by their endings.

Yes. Ĉiu can stand alone if the noun is understood from context.

For example:

• Ĉiu venis. = Everyone came.
• Mi vidis ĉiun. = I saw each one / everyone.

But in your sentence, the noun is stated explicitly:

• ĉiun objekton

So here ĉiun directly modifies objekton.