Mi evitas danĝerajn vojojn.

In Esperanto, -as marks the present tense. So evitas means avoid / am avoiding / do avoid, depending on context.

The verb is built like this:

• evit- = the root
• -as = present tense

Unlike English, the verb form does not change for different people:

• mi evitas = I avoid
• vi evitas = you avoid
• li/ŝi evitas = he/she avoids

So you do not need a special -s form for he/she like in English.

Because the noun phrase is both plural and the direct object of the verb.

Here is the breakdown:

• voj-o = road
• voj-oj = roads
• voj-ojn = roads, as a direct object

And the adjective has to agree with the noun:

• danĝera vojo = dangerous road
• danĝeraj vojoj = dangerous roads
• danĝerajn vojojn = dangerous roads, as a direct object

So:

• -j = plural
• -n = accusative/direct object
• together -jn

This agreement is very important in Esperanto.

The dictionary forms are:

• mi = I
• eviti = to avoid
• danĝera = dangerous
• vojo = road

In the sentence, some of these forms change because of grammar:

• eviti → evitas
• danĝera → danĝerajn
• vojo → vojojn

Yes, it could be singular if that is what you want to say.

In this sentence, vojojn is plural because the idea is roads rather than one road.

Compare:

• Mi evitas danĝeran vojon. = I avoid a dangerous road.
• Mi evitas danĝerajn vojojn. = I avoid dangerous roads.

So the plural is chosen because the meaning is plural.

Esperanto does have a definite article, la, meaning the. But it does not have an indefinite article like English a/an.

So:

• vojo can mean a road or just road in a general sense
• la vojo means the road

In your sentence, there is no la because the sentence is talking about dangerous roads in a general way, not a specific set already identified.

So Mi evitas danĝerajn vojojn is perfectly natural.

No. Eviti is a transitive verb, which means it takes a direct object directly.

So you say:

• eviti ion = to avoid something

That is why Esperanto uses:

• Mi evitas danĝerajn vojojn.

There is no need for a preposition like from or of here.

The most normal word order is:

• Mi = subject
• evitas = verb
• danĝerajn vojojn = object

So this sentence follows the usual subject–verb–object pattern.

However, Esperanto word order is somewhat flexible because the -n ending helps show what the object is. For example, you could also say:

• Danĝerajn vojojn mi evitas.

That gives more emphasis to dangerous roads.

Still, for learners, the standard order Mi evitas danĝerajn vojojn is the safest and most natural choice.

Yes. In Esperanto, adjectives can usually go before or after the noun.

So both are possible:

• danĝerajn vojojn
• vojojn danĝerajn

But the normal, neutral order is usually adjective + noun, especially in simple sentences.

So danĝerajn vojojn is the most natural version here.

Usually, Esperanto keeps the subject pronoun.

That is because verb endings show tense, but not person. For example:

• evitas can mean I avoid, you avoid, he avoids, they avoid, depending on the subject

So if you just said Evitas danĝerajn vojojn, the listener would not automatically know who is avoiding them.

That is why mi is normally included.

A few useful pronunciation points:

• ĝ sounds like the j in judge
• j sounds like the y in yes
• stress in Esperanto normally falls on the second-to-last syllable

So:

• danĝerajn is stressed on ĝe: dan-ĜE-rajn
• vojojn is stressed on vo: VO-jojn

Also:

• aj sounds like the -y sound in my / eye
• oj sounds like the oy in boy

So the endings:

• -ajn ≈ -ine with an n ending, but best learned as Esperanto’s own sound
• -ojn ≈ oyn

The endings would change depending on the grammar.

Here is a useful pattern:

• danĝera vojo = a dangerous road
  singular, not object

• danĝeran vojon = a dangerous road
  singular, direct object

• danĝeraj vojoj = dangerous roads
  plural, not object

• danĝerajn vojojn = dangerous roads
  plural, direct object

This is a very common Esperanto pattern:

• adjective and noun agree in number
• adjective and noun also agree in the accusative -n

So this sentence is a good example of that system.