Question 1

Why doesn't the word abre-latas change to show that it's plural?

Accepted Answer

Abre-latas (can opener) is a compound noun made from a verb (abre, from abrir) and a noun that is already plural (latas). Compound words built this way don't change their spelling when they become plural. We only know it means "can openers" here because of the plural article os right before it.

Question 2

Why does lavar turn into lavá-los at the end of the sentence?

Accepted Answer

This is the infinitive verb lavar (to wash) combined with the pronoun os (them, referring back to the can openers). When attaching the direct object pronouns o, a, os, or as to a verb ending in -r, we drop the -r and change the pronoun to start with an L (-los). We then add the acute accent (á) to keep the spoken stress on that syllable.

Question 3

We've learned that se (if) often triggers the future subjunctive. Why does this sentence just use the normal present tense queres?

Accepted Answer

You use the present indicative (queres) with se when talking about general facts, habits, or immediate realities (like "If you want to use them right now"). You only need the future subjunctive (quiseres) for future, hypothetical possibilities (like "If you ever want to use them in the future").

Question 4

Could I say tens que instead of tens de?

Accepted Answer

In everyday spoken Portuguese, yes, you will often hear people say tens que. However, strictly speaking, ter de is the grammatically correct form to express a strong obligation, duty, or physical necessity, which is why it is used here.

Se queres usar os abre-latas, tens de lavá-los.

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