Portuguese Phrase
Estudei ontem à noite.
Meaning
The speaker is saying that they studied during the previous night. It conveys a completed study session and is often used to explain why the speaker is tired or why they could not do something else.
When to use
Use this sentence when answering questions about what you did yesterday, when giving a reason for feeling fatigued, or when describing a recent study habit.
✦Grammar Breakdown
Estudeiontemànoite
Estudei (pretérito perfeito)
‘Estudei’ is the first‑person singular of the verb ‘estudar’ in the pretérito perfeito, used for a completed action in the past.
ontem (advérbio de tempo)
‘ontem’ means ‘yesterday’ and usually appears before or after the verb to locate the action in time.
à noite (contração)
‘à’ is the contraction of the preposition ‘a’ + the feminine article ‘a’, forming ‘à noite’ = ‘at night’.
Ordem natural
In Brazilian Portuguese the most natural order is verb + ontem + à noite, but ‘ontem à noite’ can also appear before the verb for emphasis.
🗨In Conversation
O que você fez ontem?
What did you do yesterday?
Estudei ontem à noite.
I studied last night.
✕Common Mistakes
Estava estudando ontem à noite.
‘Estava estudando’ is the imperfect progressive, which describes an ongoing action, not a completed one.
Estudei ontem a noite.
Missing the accent on ‘à’ removes the contraction and is considered a spelling error.
Estudei ontem a noite.
The preposition must be contracted to ‘à’ when it precedes ‘noite’.
Estudei à noite ontem.
While grammatically possible, the order sounds unnatural in most contexts; place ‘ontem’ before ‘à noite’.
↔Alternatives
Fiz meus estudos ontem à noite.
I did my studies last night.
Passei a noite estudando.
I spent the night studying.
Estudei na noite passada.
I studied the night before.
Cultural Tip
In Brazil ‘à noite’ is the standard way to say ‘at night’. When you want to be precise, pair it with ‘ontem’ (yesterday) – ‘ontem à noite’. Avoid mixing the preposition: write ‘à noite’, not ‘a noite’, because the accent signals the contraction and is required in formal writing.