La stirilo estas antaŭ la selo.

La is the Esperanto definite article, meaning the.

It appears twice because there are two separate noun phrases:

• la stirilo = the handlebar / the steering part
• la selo = the saddle / the seat

In Esperanto, each noun phrase uses its own article if it is definite. You cannot usually use one la for both nouns here.

In Esperanto, nouns normally end in -o.

So:

• stirilo = a noun
• selo = a noun

This is one of the most regular features of Esperanto. If you see -o, it is very often a noun.

Stirilo comes from the idea of steering or controlling direction. In this sentence, it usually means the handlebar or the steering part of something like a bicycle.

A learner may notice that the translation is not always one exact English word. Depending on context, stirilo can refer to:

• a handlebar
• a steering wheel
• some steering/control part

Here, because of selo (saddle/seat), the sentence strongly suggests something like a bicycle.

Estas means is / are / am.

It is the present tense form of esti = to be.

A useful thing to know is that Esperanto does not change this form for different subjects:

• mi estas = I am
• vi estas = you are
• li estas = he is
• ili estas = they are

So in this sentence, La stirilo estas ... means The handlebar is ...

Antaŭ is a preposition meaning before or in front of, depending on context.

In this sentence it means in front of:

• antaŭ la selo = in front of the saddle

So the whole structure is:

• noun
• estas
• prepositional phrase

That is very similar to English: The handlebar is in front of the saddle.

Antaŭ is the preposition, so it is used before a noun:

• antaŭ la selo = in front of the saddle

Antaŭe is an adverb, meaning more like beforehand, earlier, or in front without directly taking a noun.

So:

• antaŭ la selo = correct here
• antaŭe would not fit this structure if you want to say in front of the saddle

Because this sentence describes a location, not movement toward something.

• La stirilo estas antaŭ la selo = the handlebar is in front of the saddle

There is no direct object here, and no motion toward a place. So selo stays in its normal noun form.

A learner may have seen that Esperanto sometimes uses -n after prepositions to show movement toward something. But here the sentence is static, so no -n is needed.

Yes, Esperanto word order is fairly flexible, but this version is the most neutral and natural:

• La stirilo estas antaŭ la selo.

You could also say:

• Antaŭ la selo estas la stirilo.

That can work, but it sounds more marked, as if emphasizing the location first.

For learners, the original order is best to use first: subject + estas + prepositional phrase

Esperanto has la for the, but it has no separate word for a/an.

So:

• stirilo can mean a handlebar or just handlebar, depending on context
• la stirilo specifically means the handlebar

That is why la is important here: it marks both nouns as definite.

Yes. Selo literally means saddle, but in many contexts English speakers may naturally translate it as seat, especially for bicycles.

So depending on the situation:

• la selo = the saddle
• or more naturally in some English contexts, the seat

The Esperanto word stays the same; the best English translation depends on the object being described.

A rough guide is an-TAU, with the stress on the second-to-last syllable, because Esperanto stress is normally on the penultimate syllable.

A few pronunciation notes:

• aŭ is a diphthong, somewhat like ow in cow
• so antaŭ sounds roughly like ahn-TOW

Also, Esperanto spelling is very regular, so once you learn the sounds, words are usually pronounced exactly as written.

Not necessarily, but it strongly suggests one.

The combination of:

• stirilo = handlebar / steering part
• selo = saddle

makes a bicycle a very likely interpretation. Still, grammatically the sentence itself just says that one part is in front of another part. The exact object comes from context.

It breaks down very neatly:

• La stirilo = subject
• estas = verb
• antaŭ la selo = prepositional phrase showing location

So the pattern is:

The handlebar + is + in front of the saddle

This is a very common and useful Esperanto sentence pattern for describing where something is.