El fuego destruyó la casa.

In Spanish, nouns usually need an article more often than in English. So el fuego is the normal way to say the fire.

Spanish often uses the definite article where English might be more flexible. In this sentence, el fuego is the subject, so el helps identify it as a noun phrase.

• el fuego = the fire
• just fuego on its own would usually sound incomplete here

Because el does not mean the noun is biologically male. It means the noun is grammatically masculine.

In Spanish, every noun has grammatical gender:

• el fuego = masculine
• la casa = feminine

This is a grammar category, not usually a statement about real-world sex or gender.

For the same reason: Spanish normally uses an article with countable nouns in sentences like this.

So:

• la casa = the house

In English, you also need an article here: The fire destroyed the house, not normally just Fire destroyed house.

Destruyó is the preterite tense, third person singular, of destruir.

That means it refers to a completed action in the past:

• yo destruí = I destroyed
• tú destruiste = you destroyed
• él/ella destruyó = he/she/it destroyed

In this sentence, the subject is el fuego, so Spanish uses the same form as él/ella: destruyó.

The accent mark shows where the stress goes: des-tru-YÓ.

It also helps distinguish the correct written form of the preterite. With verbs like destruir, some forms in the preterite take written accents:

• destruí
• destruiste
• destruyó
• destruyeron

That written accent is part of the standard spelling.

This is a spelling pattern in the preterite for verbs like destruir, leer, oír, and some similar verbs.

Instead of a form like destruió, Spanish changes it to destruyó. The y helps the word sound natural and avoids an awkward vowel combination in this form.

So:

• infinitive: destruir
• preterite 3rd person singular: destruyó
• preterite 3rd person plural: destruyeron

This is something learners usually just memorize as a pattern.

In Spain, a good approximation is:

des-troo-YO

The stress falls on the last syllable because of the accent mark: -yó.

A rough breakdown:

• des = like dess
• tru = roughly troo
• yó = yo with the stress there

So: dess-troo-YO

A rough English-friendly pronunciation is:

FWEH-go

The ue forms a diphthong, so it is said together, not as two separate full syllables.

It has two syllables:

• fue
• go

Stress: FUE-go

The most normal word order is:

Subject + verb + object

• El fuego = subject
• destruyó = verb
• la casa = direct object

So El fuego destruyó la casa is the most neutral and natural version.

You can change word order in Spanish, but it usually sounds more literary, emphatic, or unusual:

• Destruyó el fuego la casa = possible, but not the usual everyday order

For learners, it is best to stick with El fuego destruyó la casa.

Yes. A passive version would be:

La casa fue destruida por el fuego.

That means the same thing, but the focus changes:

• El fuego destruyó la casa focuses first on the fire
• La casa fue destruida por el fuego focuses first on the house

Spanish often prefers the active sentence unless there is a reason to emphasize the object.

Because the personal a is mainly used with specific human beings, and sometimes pets or personified beings.

Examples:

• Veo a María.
• Escucho a mi padre.

But la casa is a thing, not a person, so there is no personal a:

• El fuego destruyó la casa.

Sometimes, but the meaning is not exactly the same.

• quemó = burned
• destruyó = destroyed

So:

• El fuego quemó la casa = The fire burned the house.
• El fuego destruyó la casa = The fire destroyed the house.

If the house was completely ruined, destruyó is stronger. If you only want to say it caught fire or was burned, quemó may be more appropriate.

In this sentence, el fuego most naturally means the fire, probably a particular fire being talked about.

Spanish uses the definite article more often than English, but here it still usually suggests a specific fire, not the idea of fire in general.

If you were speaking very generally, context would matter a lot. In an ordinary sentence like this, most learners should understand it as:

• the fire destroyed the house

La casa is the direct object. It is the thing that received the action of the verb.

You can find it by asking:

• What did the fire destroy?
• La casa

So the structure is:

• El fuego = subject
• destruyó = verb
• la casa = direct object

It is mostly regular in many forms, but learners usually treat it as having a special pattern in the preterite and some related forms.

For example, these preterite forms are important:

• destruí
• destruiste
• destruyó
• destruimos
• destruisteis
• destruyeron

So it is not completely irregular in a wild way, but it does have spelling changes and accent patterns that you need to learn carefully.