El llogater avisa el propietari.

Because Catalan is using the definite article el twice: once for the subject and once for the direct object.

• el llogater = the tenant
• el propietari = the owner / landlord

English also does this: The tenant warns the owner. Catalan simply keeps the article in both places.

In this sentence, el llogater is the subject and el propietari is the direct object.

So:

• El llogater = the person who does the warning
• avisa = warns / informs
• el propietari = the person being warned or informed

Catalan usually follows a subject + verb + object order here, just like English.

Avisa is the third-person singular present form of the verb avisar.

It can mean things like:

• warns
• informs
• notifies
• sometimes lets someone know

The exact English translation depends on context. In a housing context, informs or notifies may sound natural, while in other contexts warns may fit better.

Because avisar is the infinitive, meaning to warn / to inform.

In the sentence, the verb is conjugated to match el llogater (the tenant), which is he/she/it form:

• avisar = to warn / to inform
• aviso = I warn
• avises = you warn
• avisa = he/she warns

So El llogater avisa... means The tenant warns/informs...

Yes. Llogater means tenant and this form is masculine singular.

The feminine form is usually:

• la llogatera = the female tenant

So:

• el llogater = the male tenant / the tenant
• la llogatera = the female tenant

As in many Catalan nouns referring to people, the ending often changes for gender.

Propietari literally means owner.

Depending on context, especially housing, it may be translated as:

• owner
• landlord

So if the sentence is about renting a flat, el propietari may naturally refer to the landlord.

The feminine form is:

• la propietària = the female owner / landlady

Because avisar can take a direct object in Catalan.

So Catalan says:

• El llogater avisa el propietari

There is no need for a preposition like a or to here in this basic structure.

That is different from some English verbs, where you might say tell someone or give something to someone. With avisar, Catalan can directly connect the verb to the person being informed or warned.

Yes. That is a very natural interpretation.

The verb avisar is broader than a single fixed English translation. Depending on context, this sentence could be understood as:

• The tenant warns the landlord
• The tenant informs the landlord
• The tenant notifies the landlord
• The tenant lets the landlord know

If the original meaning has already been provided to the learner, that context determines the best translation.

A helpful approximate pronunciation is:

• llogater ≈ lyo-guh-TER

A few points:

• ll in standard Catalan is often like ly
• the stress is on the last syllable: -ter

So the stress pattern is llo-ga-TER.

A rough guide is:

• propietari ≈ pro-pee-eh-TA-ree

The stress falls on ta:

• pro-pi-e-TA-ri

Exact pronunciation varies somewhat by dialect, but this will help you recognize and say the word.

Yes, but El llogater avisa el propietari is the most neutral and straightforward order.

Catalan can change word order for emphasis, style, or in questions, but for a simple statement, subject + verb + object is the standard pattern.

So this sentence is a very typical basic declarative sentence.

It could definitely use pronouns, depending on context.

For example, once it is clear who the people are, Catalan might replace el propietari with a pronoun. But in a simple learning sentence, full nouns are used because they are clearer:

• El llogater avisa el propietari.

That makes it easy to see the structure and the vocabulary.

It is in the present tense, and like the English present, it can have more than one use depending on context.

It could mean:

• a present action: The tenant is informing the landlord
• a habitual action: The tenant informs the landlord
• a general statement: The tenant notifies the landlord

Without more context, it is simply the present tense.