Portuguese Phrase
Onde posso comprar uma régua?
Meaning
The sentence asks for the location where the speaker can purchase a ruler. It is a practical question you might ask in a school, office, or while traveling in Brazil or Portugal.
When to use
Use this phrase when you need a ruler for school, work, or a DIY project and you are looking for a store that sells it. It works in both formal and informal contexts, such as asking a clerk, a friend, or a local resident.
✦Grammar Breakdown
Ondepossocomprarumarégua?
Onde (interrogative adverb)
Used to ask about location or place. It functions like 'where' in English.
posso (verb poder)
First‑person singular present of poder, meaning 'I can' or 'I am able to'.
comprar (infinitive)
The infinitive form of the verb 'to buy'. After a conjugated verb like poder, the infinitive follows.
uma (indefinite article)
Feminine singular article meaning 'a' or 'an'. It agrees with the noun régua.
régua (noun)
A feminine noun meaning 'ruler' (the measuring tool).
? (question mark)
Marks the sentence as a direct question.
🗨In Conversation
Onde posso comprar uma régua?
Where can I buy a ruler?
Você pode encontrar uma na papelaria da esquina ou na loja de material de escritório.
You can find one at the stationery shop around the corner or at the office‑supply store.
✕Common Mistakes
Onde pode comprar uma régua?
‘pode’ is third‑person singular; the subject is ‘eu’, so the correct form is ‘posso’.
Onde eu comprar uma régua?
In Portuguese the verb does not follow the subject directly; you need the infinitive after ‘posso’.
Onde eu posso comprar uma régua?
While not wrong, the extra ‘eu’ is redundant in everyday speech; native speakers usually drop it.
↔Alternatives
Onde eu consigo comprar uma régua?
Where can I get a ruler?
Em que lugar posso achar uma régua?
In which place can I find a ruler?
Qual loja vende réguas?
Which store sells rulers?
Cultural Tip
In Brazil, the most common places to buy a régua are papelarias (stationery shops), livrarias that also sell school supplies, and larger supermarkets that have a ‘material de escritório’ aisle. In Portugal, you’ll often find them in ‘lojas de papelaria’ or ‘lojas de material escolar’. The word régua is feminine, so remember the article ‘uma’. When speaking to a clerk, a polite ‘por favor’ before the question is appreciated: ‘Por favor, onde posso comprar uma régua?’