La roda és sobre el terra.

Catalan articles change with the gender of the noun.

• la = the for a feminine singular noun
• el = the for a masculine singular noun

So in this sentence:

• la roda = the wheel
• el terra = the floor / the ground

This is one of the first things English speakers notice, because English uses just the for everything.

Yes. Roda is a feminine noun in Catalan, so it takes la:

• la roda = the wheel

As in many Romance languages, grammatical gender is something you usually have to learn together with the noun.

This is a very useful distinction, because terra can change meaning depending on the article:

• el terra = the floor / the ground surface
• la terra = the earth / the land / the soil

So in La roda és sobre el terra, el terra means the floor or the ground underneath.

This is a common point of confusion for learners, because the noun looks the same but the article changes the meaning.

Sobre means on, over, or above, depending on context.

In this sentence, it means that the wheel is on top of or above the floor/ground:

• sobre el terra = on the floor / on the ground

In practice, sobre often suggests a position over or resting on top of something.

Not always. English on can correspond to different expressions in Catalan depending on context.

For example:

• sobre often means on top of / over
• sometimes Catalan uses other prepositions or expressions for location, depending on the exact idea

So sobre el terra is understandable as on the floor / over the floor, but in some everyday contexts native speakers might choose a different wording depending on the nuance they want.

És is the 3rd person singular form of the verb ser (to be):

• és = is

The accent matters:

• és = is
• es = an unstressed pronoun, often meaning something like oneself / itself / each other depending on context

So here, és must have the accent because it is the verb:

• La roda és sobre el terra. = The wheel is on the floor.

It comes from ser, which means to be.

A few present-tense forms are:

• jo sóc = I am
• tu ets = you are
• ell / ella és = he / she is

So:

• La roda és... = The wheel is...

Usually, yes. The basic word order here is very similar to English:

• La roda = subject
• és = verb
• sobre el terra = prepositional phrase showing location

So the structure is:

• The wheel
  • is
    • on the floor

That makes this sentence fairly straightforward for English speakers.

A simple learner-friendly approximation is:

• roda ≈ ROH-duh

More precisely:

• the r is usually tapped or lightly rolled
• the o is a clear o sound
• the final a is an unstressed a

So try something like ROH-thuh or ROH-duh, depending on accent and your native variety of English. The important part is that it has two syllables: ro-da.

A simple approximation is:

• és ≈ ess

It is a short word, and the accent mark shows that the vowel is stressed.

A simple approximation is:

• terra ≈ TEH-rra

Notes:

• it has two syllables: ter-ra
• the rr is stronger than a single r
• the e is like e in bed, not like English ee

So the whole phrase sobre el terra is roughly:

• SOH-breh el TEH-rra

Yes, depending on context, but the article helps:

• la terra often means earth, land, or soil
• el terra often means floor or ground surface

So the sentence uses the meaning connected with floor/ground, not the planet Earth.

This is a good question because English uses only to be, while Catalan has both ser and estar.

In this sentence, és from ser is the form you are given, and it is grammatical. In real usage, learners will also encounter estar in location sentences, depending on dialect, style, and nuance.

So for learning purposes, the safest point here is:

• és = is
• it comes from ser
• the sentence as written is correct Catalan to learn from

If you study further, you will see more detail about when Catalan prefers ser or estar.

Yes — that is one of the best habits to build in Catalan.

Instead of learning just:

• roda
• terra

learn:

• la roda
• el terra

That way you automatically learn the gender and the most natural way to use the noun in a sentence.