El confeti cubrió la calle.

In Spanish, nouns are often used with an article more often than in English. So el confeti is completely natural.

Here, confeti is a masculine noun, so it takes el in the singular:

• el confeti
• mucho confeti

Even though English often says just confetti, Spanish commonly uses the article.

In this sentence, confeti is treated as a singular mass noun. It works a bit like sand or snow in English: it refers to a substance or collection, not necessarily to one single piece.

That is why the verb is singular:

• El confeti cubrió... = singular subject

You may sometimes see confetis, but confeti is the normal form when talking about confetti in general.

Cubrió is the third-person singular preterite of cubrir (to cover).

It is used because the subject is singular:

• el confeti → cubrió

And the preterite is used because the sentence describes a completed action in the past: the confetti covered the street.

The infinitive is cubrir.

A few useful forms are:

• cubrir = to cover
• cubro = I cover
• cubre = he/she/it covers
• cubrió = he/she/it covered

So in this sentence:

• El confeti cubrió la calle
  the subject is el confeti, so Spanish uses the él/ella/ello form in the preterite: cubrió.

The accent mark in cubrió shows the stress and helps distinguish the correct pronunciation.

Without going too deep into spelling rules, the important point is that cubrió is pronounced roughly as:

• ku-BRYO

The accent helps signal that the ending is pronounced correctly in this past-tense form.

Because calle is a countable noun, and here it refers to a specific street as the direct object, Spanish normally uses the definite article:

• la calle

This is very common in Spanish:

• abrió la puerta
• cerró la ventana
• limpió la mesa

English sometimes omits the in places where Spanish keeps the article, but here both languages naturally use it.

Because calle is simply a feminine noun in Spanish.

So it takes feminine articles and adjectives:

• la calle
• una calle
• la calle estrecha

There is not always a logical reason a noun is masculine or feminine; often it just has to be learned with the word.

In standard Peninsular Spanish, calle is pronounced approximately like:

• KA-ye

More specifically:

• the c before a sounds like a normal k
• the ll in modern Spanish usually sounds like y

So la calle sounds roughly like:

• la KA-ye

Depending on the region in Spain, the exact ll sound may vary a little.

A rough pronunciation is:

• ku-BRYO

Breakdown:

• cu = koo
• bri = bree
• ó = stressed o

So the stress falls on the last syllable:

• cu-bri-Ó

Yes, but it means something slightly different.

• El confeti cubrió la calle = the action is seen as completed; the confetti covered the street.
• El confeti cubría la calle = the action is seen as ongoing/background/descriptive; the confetti was covering the street / covered the street as a scene or condition.

So cubrió tells the event as a finished action, while cubría describes the situation more generally or in progress.

Yes, but El confeti cubrió la calle is the most neutral, standard order: subject + verb + object.

Spanish can change word order for style or emphasis, for example:

• La calle quedó cubierta de confeti
• Cubrió la calle el confeti (less neutral, more literary or emphatic)

For a learner, the original sentence is the clearest and most natural structure to use.

Yes. A very natural alternative is:

• La calle quedó cubierta de confeti.

This means something like the street ended up covered in confetti or the street was left covered in confetti.

Compared with El confeti cubrió la calle, this version focuses more on the result than on the subject doing the action. Both are correct, but the original sentence is simpler and more direct.