Question 1

Why does this sentence use mudo instead of another word for change like troco?

Accepted Answer

Mudar and trocar can both mean to change. Trocar is often used for physically swapping one thing for another, but for changing bed sheets, clothes, or diapers, both mudar and trocar are very common and interchangeable in Portugal. You could also completely correctly say troco os lençóis here.

Question 2

What is the singular form of lençóis and why does it change so much in the plural?

Accepted Answer

The singular is lençol. In Portuguese, nouns ending in -ol form their plural by dropping the -l, adding -is, and putting an acute accent on the o. That is how lençol turns into lençóis. Another example you might know is sol (sun) becoming sóis.

Question 3

The English translation says on Saturdays (plural), so why is sábado singular in the Portuguese sentence?

Accepted Answer

To express a recurring habit on a specific day of the week, European Portuguese uses the preposition a plus the definite article. For Saturday, a plus o makes ao sábado. Even though it is singular, it translates to on Saturdays because this structure implies a weekly habit. You can also use the plural aos sábados for the exact same meaning.

Question 4

Can I add eu to the beginning of the sentence to say I change?

Accepted Answer

Yes, you can say eu mudo os lençóis, but it is not necessary. Because the verb mudar is conjugated as mudo, it is already perfectly clear that I am doing the action. Native speakers usually leave out the pronoun unless they want to emphasize that I change the sheets, not someone else.

Mudo os lençóis ao sábado.

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