Mi portas la kondukŝnuron.

In Esperanto, -as marks the present tense.

So:

• porti = to carry / to wear
• portas = carry / carries / am carrying / is carrying / are carrying

Esperanto verbs do not change for person, so:

• mi portas = I carry
• vi portas = you carry
• li portas = he carries

The verb ending stays the same.

The -n is the accusative ending, which usually marks the direct object of the verb.

In this sentence:

• Mi = I
• portas = carry/am carrying
• la kondukŝnuron = the lead/leash

So kondukŝnuron is the thing being carried, which makes it the direct object.

Base noun:

• kondukŝnuro = lead rope / leash

Direct object form:

• kondukŝnuron

It actually is exactly that in structure:

• kondukŝnuro
  • -n = kondukŝnuron

Esperanto nouns normally end in -o, and then the accusative -n is added after that.

So the pattern is:

• libro → libron
• hundo → hundon
• kondukŝnuro → kondukŝnuron

La is the Esperanto definite article, meaning the.

So:

• kondukŝnuro = a lead rope / leash, or just lead rope in a general sense
• la kondukŝnuro = the lead rope / leash

Unlike English, la never changes. It is always just la.

Esperanto often forms new words by combining smaller meaningful parts into a compound word.

Here:

• konduk- = leading, guiding
• ŝnuro = cord, rope

So kondukŝnuro literally means something like guiding-rope or lead-rope.

Compounds in Esperanto are usually written as one word, not as separate words.

Good question. These are similar, but not quite the same.

• kondukŝnuro = a specific type of rope, a lead rope / leash
• konduka ŝnuro = a leading/guiding rope, more like a descriptive phrase

In Esperanto, a compound often names a thing more directly and naturally, while an adjective + noun combination can sound more descriptive or less fixed.

So kondukŝnuro is the more natural way to name the object itself.

No. Porti can mean several related things, including:

• to carry
• to wear
• to bear

For example:

• Mi portas sakon. = I am carrying a bag.
• Ŝi portas ĉapelon. = She is wearing a hat.

So in your sentence, Mi portas la kondukŝnuron, the exact nuance depends on context. It could mean I am carrying the leash/lead rope.

Yes, sometimes.

• porti = carry, wear
• teni = hold

So:

• Mi portas la kondukŝnuron. = I am carrying the leash.
• Mi tenas la kondukŝnuron. = I am holding the leash.

If the intended meaning is specifically that your hand is on it, teni may be more precise. If the sentence just means you have it with you or are carrying it, porti works well.

Yes. Esperanto word order is fairly flexible, partly because the -n ending shows the direct object.

So these can all be understood:

• Mi portas la kondukŝnuron.
• La kondukŝnuron mi portas.

Both mean the same basic thing: I am carrying the leash.

However, the first order is the most neutral and natural for beginners:

• subject + verb + object

The letter ŝ is pronounced like English sh in shoe.

So kondukŝnuron contains a sh sound in the middle.

Roughly:

• kon-duk-SHNU-ron

Also, Esperanto stress normally falls on the second-to-last syllable.

For kondukŝnuron, the stress is on ŝnu.

Normally, Esperanto does use the subject pronoun, so mi is usually included.

That is because:

• portas could mean I carry, you carry, he carries, etc.
• the verb ending tells you the tense, but not the person

So Mi portas is the normal way to say I carry / I am carrying.

The dictionary form is kondukŝnuro.

That is because Esperanto dictionaries usually list:

• nouns in -o
• adjectives in -a
• verbs in the infinitive -i

So here the parts are:

• mi → pronoun
• portas → from porti
• la → article
• kondukŝnuron → from kondukŝnuro

It can be either, depending on context.

Esperanto -as covers both English ideas:

• I carry the leash
• I am carrying the leash

Esperanto does not normally make a special grammatical distinction between those two. Context tells you which is meant.