A2 Past Tense 8 min read Easy

Sleeping in the Past: The Verb 'Dormir' (Preterite)

Use the Preterite of dormir for finished, specific past sleep events without any irregular stem changes.
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Grammar Rule in 30 Seconds

The verb 'dormir' changes its stem vowel from 'o' to 'u' only in the first-person singular (eu) form.

  • Use 'dormi' for 'eu' (I slept).
  • Use 'dormiu' for 'ele/ela/você' (he/she/you slept).
  • Use 'dormiram' for 'eles/elas/vocês' (they/you all slept).
Subject + Dormir(Preterite) + Time/Place

Overview

The Portuguese verb dormir (to sleep) is fundamental for describing past actions related to rest. At the A2 CEFR level, mastering its use in the Pretérito Perfeito Simples (Simple Past Tense) is crucial for discussing completed events. This tense is often referred to as the Preterite.

While dormir exhibits stem changes in the present tense (e.g., eu durmo), a key characteristic of its Pretérito Perfeito conjugation is its complete regularity. This stands in contrast to many other verbs, making dormir a comparatively straightforward verb in this specific past tense. Understanding this regularity is a significant advantage for learners.

You will use the Pretérito Perfeito of dormir to express actions of sleeping that had a definite beginning and end in the past.

Conjugation Table

Person Conjugation (BP/EP) Example (BP) Example (EP) English Translation
:--------------- :------------------ :------------------------------------ :----------------------------------------- :---------------------------
Eu (I) dormi Eu dormi bem ontem. Eu dormi bem ontem. I slept well yesterday.
Tu (You, sing.) dormiste (EP only) (Not typically used) Tu dormiste pouco esta noite. You slept little last night.
Você/Ele/Ela (You, sing./He/She) dormiu Ele dormiu até tarde hoje. Ela dormiu na casa da amiga. He slept in late today. / She slept at her friend's house.
Nós (We) dormimos Nós dormimos no sofá. Nós dormimos muito no fim de semana. We slept on the sofa. / We slept a lot on the weekend.
Vocês/Eles/Elas (You, pl./They) dormiram Eles dormiram a noite inteira. Vocês dormiram bem na viagem? They slept all night. / Did you all sleep well on the trip?

How This Grammar Works

The Pretérito Perfeito Simples in Portuguese functions to describe actions that were completed and finite in the past. When applied to dormir, it signifies an act of sleeping that began and ended at a specific, often implied, point in time. This tense presents the action as a single, indivisible event, much like taking a snapshot of a past occurrence.
For instance, Eu dormi por oito horas (I slept for eight hours) emphasizes the completion and duration of that single sleeping event.
This tense is crucial for narrating sequences of events, reporting past activities, or specifying how long an action lasted. It stands in direct contrast to the Pretérito Imperfeito, which describes habitual, ongoing, or interrupted actions in the past. The Pretérito Perfeito frames sleep as a definitive past accomplishment.
If you awoke from a dream and wished to recount it, the very act of sleeping that preceded the dream would be expressed using this tense: Eu dormi e tive um sonho estranho. (I slept and had a strange dream.). This reflects the A2 learner's need to report clear, simple past events effectively.

Formation Pattern

1
Conjugating dormir in the Pretérito Perfeito Simples is systematic due to its regularity. Here is the precise step-by-step process:
2
Identify the infinitive verb: Begin with dormir.
3
Remove the infinitive ending: Detach the -ir to obtain the verb stem. For dormir, the stem is dorm-.
4
Apply the Preterite endings: Attach the appropriate endings directly to the stem, which remains consistent for all persons. These endings are:
5
Eu: -i → dormi
6
Tu: -iste (EP) → dormiste
7
Você/Ele/Ela: -iu → dormiu
8
Nós: -imos → dormimos
9
Vocês/Eles/Elas: -iram → dormiram
10
This pattern is consistent for all regular -ir verbs in the Pretérito Perfeito. For example, partir (to leave) becomes parti, partiste, partiu, partimos, partiram. The consistent dorm- stem, unlike the present tense's durmo, simplifies conjugation in the past tense significantly.

When To Use It

The Pretérito Perfeito of dormir is employed for specific instances of sleeping that are perceived as completed within a defined time frame. Its usage is marked by clear temporal boundaries and a focus on the action's conclusion.
  • Specific, Completed Events: Use dormi to state that the act of sleeping was a single, finished event. For example, Ontem à noite, eu dormi profundamente. (Last night, I slept deeply.). This specifies a particular instance of deep sleep.
  • Actions with Defined Duration: When quantifying the length of sleep, the Preterite is appropriate. Ele dormiu por dez horas seguidas. (He slept for ten straight hours.). This emphasizes the completed duration of the action.
  • Narration of Sequential Events: In a series of past actions, dormir in the Preterite indicates one step in that sequence. Cheguei em casa, comi algo, e depois dormi. (I arrived home, ate something, and then I slept.). Each action is distinct and completed.
  • Responses to Questions about Past Rest: If asked about the quality or duration of recent sleep, this tense provides a direct answer. Você dormiu bem? Sim, dormi muito bem, obrigado. (Did you sleep well? Yes, I slept very well, thank you.). The question specifically references a completed act of sleeping.
  • Reference to Interruptions: When sleep is presented as an action that was concluded or affected by something else. O telefone tocou e ela dormiu mal. (The phone rang and she slept poorly.). The poor sleep was a completed state.
These contexts highlight the Pretérito Perfeito's role in conveying concrete, non-habitual past actions related to sleeping.

Common Mistakes

Learners frequently encounter specific challenges when conjugating dormir in the Pretérito Perfeito. Awareness of these pitfalls is crucial for accurate communication.
  • The "U" Stem Error: A prevalent error arises from the present tense conjugation eu durmo, which features a stem change from o to u. Learners mistakenly apply this vowel shift to the Preterite, producing forms like eu durmi. However, in the Pretérito Perfeito, the stem never changes; it remains dorm-. The correct form is eu dormi. This is a significant point of divergence from the present tense and merits careful attention.
  • Confusing Third Person Singular and Plural: Learners sometimes interchange ele/ela/você dormiu with eles/elas/vocês dormiram. The key difference lies in the final vowel and the nasal am sound for the plural. Ela dormiu no quarto. (She slept in the room.) vs. Elas dormiram no quarto. (They slept in the room.). The -am ending is exclusively for the third person plural.
  • Ambiguity of Nós dormimos: As noted, nós dormimos is identical in both the present and Pretérito Perfeito. Without context, this can lead to confusion. The mistake occurs when learners fail to provide explicit time markers (e.g., ontem, na semana passada) to clarify the past tense. For instance, Nós dormimos cedo could mean "We sleep early" (habitual) or "We slept early" (yesterday). Nós dormimos cedo ontem. unambiguously means "We slept early yesterday."
  • Overuse of the Imperfect: An A2 learner might incorrectly use eu dormia (Imperfect) when they intend to convey a single, completed act of sleeping. Remember, dormia implies habitual, continuous, or background actions in the past. If you mean "I slept well last night," the correct form is eu dormi bem ontem à noite, not eu dormia bem ontem à noite (which would imply a past habit of sleeping well specifically last night, which is illogical).
  • Pronunciation of -iram: The -am ending in dormiram is nasal. Mispronouncing it as ão can lead to confusion with the future tense. Eles dormiram (they slept) has a nasal ending, similar to the um in English 'album'. Conversely, Eles dormirão (they will sleep) uses the ão sound.
  • Gender Agreement: Portuguese verbs do not change their form based on the gender of the subject. A common error involves trying to make the verb agree with a feminine subject by altering its ending. Both a man and a woman will say eu dormi. Only accompanying adjectives, like cansado/cansada, will change to reflect the subject's gender (Eu dormi cansado [masculine] vs. Eu dormi cansada [feminine]).

Contrast With Similar Patterns

Understanding dormir in the Pretérito Perfeito is enhanced by contrasting it with other past tenses and related constructions.

Pretérito Perfeito (dormi) vs. Pretérito Imperfeito (dormia):
dormi (Pretérito Perfeito): Expresses a completed action at a specific point in the past. It signifies a single, bounded event. Think of it as a **

Preterite of Dormir

Pronoun Conjugation
Eu
dormi
Tu
dormiste
Ele/Ela/Você
dormiu
Nós
dormimos
Eles/Elas/Vocês
dormiram

Meanings

The verb 'dormir' (to sleep) in the preterite tense describes a completed action of sleeping in the past.

1

Physical state

The act of being asleep.

“Eu dormi cedo.”

“Ela dormiu no sofá.”

2

Figurative

To be inactive or unaware.

“O projeto dormiu por meses.”

“A cidade dormiu durante o feriado.”

Reference Table

Reference table for Sleeping in the Past: The Verb 'Dormir' (Preterite)
Form Structure Example
Affirmative
Subject + Verb
Eu dormi.
Negative
Não + Subject + Verb
Eu não dormi.
Question
Verb + Subject?
Dormiu bem?
Short Answer
Sim/Não + Verb
Sim, dormi.
Plural
Subject + Verb
Eles dormiram.
Formal
O senhor/A senhora + Verb
O senhor dormiu?

Formality Spectrum

Formal
Dormi bem, obrigado.

Dormi bem, obrigado. (Daily life)

Neutral
Eu dormi bem.

Eu dormi bem. (Daily life)

Informal
Dormi super bem!

Dormi super bem! (Daily life)

Slang
Apaguei legal.

Apaguei legal. (Daily life)

Dormir Conjugation Map

Dormir (Preterite)

Singular

  • dormi I slept
  • dormiu He/She slept

Plural

  • dormimos We slept
  • dormiram They slept
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Examples by Level

1

Eu dormi bem.

I slept well.

2

Ela dormiu cedo.

She slept early.

3

Nós dormimos aqui.

We slept here.

4

Eles dormiram muito.

They slept a lot.

1

Você dormiu no hotel?

Did you sleep at the hotel?

2

Eu não dormi nada.

I didn't sleep at all.

3

Eles dormiram no sofá.

They slept on the couch.

4

Nós dormimos durante o filme.

We slept during the movie.

1

Apesar do barulho, eu dormi.

Despite the noise, I slept.

2

Ele dormiu profundamente após a prova.

He slept deeply after the exam.

3

Vocês dormiram bem na viagem?

Did you all sleep well on the trip?

4

Ela dormiu antes de eu chegar.

She slept before I arrived.

1

O projeto dormiu por meses antes de ser retomado.

The project slept (was dormant) for months before being resumed.

2

Dormi pouco, mas o suficiente para trabalhar.

I slept little, but enough to work.

3

Eles dormiram sob as estrelas.

They slept under the stars.

4

Nós dormimos enquanto o mundo mudava.

We slept while the world changed.

1

A cidade dormiu sob um manto de neve.

The city slept under a blanket of snow.

2

Dormi com a consciência tranquila.

I slept with a clear conscience.

3

Eles dormiram o sono dos justos.

They slept the sleep of the just.

4

Dormimos na esperança de um dia melhor.

We slept in the hope of a better day.

1

Dormiu-se pouco naquela noite de vigília.

Little was slept that night of vigil.

2

Dormi o necessário para recuperar as forças.

I slept what was necessary to recover my strength.

3

Eles dormiram enquanto a história se desenrolava.

They slept while history unfolded.

4

Dormimos, alheios ao perigo iminente.

We slept, oblivious to the imminent danger.

Easily Confused

Sleeping in the Past: The Verb 'Dormir' (Preterite) vs Dormir vs. Adormecer

Adormecer means to fall asleep, while dormir means to be asleep.

Sleeping in the Past: The Verb 'Dormir' (Preterite) vs Preterite vs. Imperfect

Both refer to the past.

Sleeping in the Past: The Verb 'Dormir' (Preterite) vs Dormir vs. Descansar

Descansar means to rest.

Common Mistakes

✗

durmi

✓

dormi

The stem is 'dorm-', not 'durm-' in the first person.
✗

dorme

✓

dormiu

Dorme is present tense.
✗

dormiram

✓

dormiu

Subject-verb agreement error.
✗

dormi-o

✓

dormiu

Incorrect spelling.
✗

dormisteu

✓

dormiu

Over-conjugating.
✗

dormiram

✓

dormiram

Spelling is fine, but usage is wrong.
✗

dormimos

✓

dormimos

Confusion with present tense.
✗

durmiu

✓

dormiu

Incorrect stem change.
✗

dormiram

✓

dormiram

Confusion with future tense.
✗

dormia

✓

dormiu

Imperfect vs Preterite confusion.
✗

dormiram

✓

dormiram

Register error.
✗

dormi

✓

dormiu

Agreement error in formal writing.
✗

dormiu-se

✓

dormiu

Passive voice misuse.

Sentence Patterns

Eu ___ ___ horas ontem.

Ele ___ no ___.

Nós ___ muito bem ___.

Eles ___ porque estavam ___.

Real World Usage

Texting very common

Dormi mal, estou cansado.

Job Interview common

O projeto dormiu por um tempo.

Travel very common

Onde vocês dormiram?

Social Media common

Dormi o dia todo! #cansado

Food Delivery occasional

Dormi e esqueci de pedir comida.

Formal Report common

A conta dormiu sem movimentação.

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⚠️

No Stem Change!

Forget the 'u' in 'durmo'. In the preterite, it's always 'dormi', 'dormiu', etc. Stick to the 'o'!
🎯

Listen for the 'U'

In 'dormiu', the 'u' is very quick. Practice saying it like 'dor-MEW' (like a cat's meow but shorter).
💬

The Soneca

Brazilians love a 'soneca' (nap). If you took one, just say: 'Eu dormi uma soneca deliciosa!'

Smart Tips

Start with 'Eu dormi' and add a time marker.

Eu dormi. → Eu dormi 8 horas ontem.

Use 'Você dormiu bem?' for a polite question.

Dormiu? → Você dormiu bem?

Use 'dormiu' to mark a specific event.

Ele dorme. → Ele dormiu no hotel.

Avoid slang like 'capotar'.

Ele capotou. → Ele dormiu.

Pronunciation

dor-mi-oo

Vowel shift

The 'o' in 'dormiu' is closed and the 'u' is clear.

Question

Dormiu? ↑

Rising intonation for yes/no questions.

Memorize It

Mnemonic

Dormi for me, dormiu for you (he/she).

Visual Association

Imagine a bed. On the left side, a person sleeping (Eu dormi). On the right, a person sleeping with a 'U' shaped pillow (Ele dormiu).

Rhyme

Eu dormi na cama, ele dormiu na lama.

Story

I went to the hotel. I said 'Eu dormi bem'. My friend was tired, so he 'dormiu' immediately. We both 'dormimos' until noon.

Word Web

dormircamasononoitedescansoquarto

Challenge

Write 3 sentences about your last vacation using 'dormi', 'dormiu', and 'dormimos'.

Cultural Notes

Brazilians often use 'dormir' to mean 'to stay the night'.

The pronunciation of 'dormimos' is the same as the present tense.

Commonly used in social narratives.

From Latin 'dormire'.

Conversation Starters

“

Você dormiu bem ontem?

“

Onde você dormiu na sua última viagem?

“

Você já dormiu em um aeroporto?

“

Por que você acha que as pessoas dormem mal?

Journal Prompts

Descreva sua última noite de sono.
Escreva sobre uma viagem inesquecível.
Como era sua rotina de sono na infância?
Reflexão sobre a importância do descanso.

Common Mistakes

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

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Test Yourself

Fill in the blank.

Eu ___ muito bem.

✓ Correct! ✗ Not quite. Correct answer: dormi
First person singular.
Choose the correct form. Multiple Choice

Ele ___ no sofá.

✓ Correct! ✗ Not quite. Correct answer: dormiu
Third person singular.
Correct the sentence. Error Correction

Find and fix the mistake:

Eu durmi ontem.

✓ Correct! ✗ Not quite. Correct answer: Eu dormi ontem.
Stem is dorm-.
Reorder the words. Sentence Reorder

Arrange the words in the correct order:

All words placed

Click words above to build the sentence

✓ Correct! ✗ Not quite. Correct answer: Eu dormi bem.
Subject-Verb-Adverb.
Translate to Portuguese. Translation

They slept.

Answer starts with: Ele...

✓ Correct! ✗ Not quite. Correct answer: Eles dormiram.
Third person plural.
Match the pronoun to the verb. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: dormimos
First person plural.
Conjugate for 'Você'. Conjugation Drill

Dormir -> ?

✓ Correct! ✗ Not quite. Correct answer: dormiu
Third person singular.
Build a sentence. Sentence Building

Use 'dormiram' and 'ontem'.

✓ Correct! ✗ Not quite. Correct answer: Eles dormiram ontem.
Standard word order.

Score: /8

Practice Exercises

8 exercises
Fill in the blank.

Eu ___ muito bem.

✓ Correct! ✗ Not quite. Correct answer: dormi
First person singular.
Choose the correct form. Multiple Choice

Ele ___ no sofá.

✓ Correct! ✗ Not quite. Correct answer: dormiu
Third person singular.
Correct the sentence. Error Correction

Find and fix the mistake:

Eu durmi ontem.

✓ Correct! ✗ Not quite. Correct answer: Eu dormi ontem.
Stem is dorm-.
Reorder the words. Sentence Reorder

bem / dormi / eu

✓ Correct! ✗ Not quite. Correct answer: Eu dormi bem.
Subject-Verb-Adverb.
Translate to Portuguese. Translation

They slept.

✓ Correct! ✗ Not quite. Correct answer: Eles dormiram.
Third person plural.
Match the pronoun to the verb. Match Pairs

Nós -> ?

✓ Correct! ✗ Not quite. Correct answer: dormimos
First person plural.
Conjugate for 'Você'. Conjugation Drill

Dormir -> ?

✓ Correct! ✗ Not quite. Correct answer: dormiu
Third person singular.
Build a sentence. Sentence Building

Use 'dormiram' and 'ontem'.

✓ Correct! ✗ Not quite. Correct answer: Eles dormiram ontem.
Standard word order.

Score: /8

Practice Bank

10 exercises
Complete the sentence. Fill in the Blank

Nós ___ pouco durante a viagem de ônibus.

✓ Correct! ✗ Not quite. Correct answer: dormimos
Reorder the words to form a correct sentence. Sentence Reorder

bem / ontem / você / dormiu / ?

✓ Correct! ✗ Not quite. Correct answer: Você dormiu bem ontem?
Translate to Portuguese. Translation

They slept in the car.

✓ Correct! ✗ Not quite. Correct answer: Eles dormiram no carro.
Select the right form for 'Tu' (European Portuguese). Multiple Choice

Tu ___ bem na casa da sua avó?

✓ Correct! ✗ Not quite. Correct answer: dormiste
Fix the stem change error. Error Correction

Eu durmi o dia inteiro no sábado.

✓ Correct! ✗ Not quite. Correct answer: Eu dormi o dia inteiro no sábado.
Match the subject to the correct verb form. Match Pairs

Match these pairs:

✓ Correct! ✗ Not quite. Correct answer: Eu -> dormi, Você -> dormiu, Nós -> dormimos, Eles -> dormiram
Fill in the blank. Fill in the Blank

O gato ___ em cima do meu teclado.

✓ Correct! ✗ Not quite. Correct answer: dormiu
Which one uses the correct time marker? Multiple Choice

Select the correct sentence:

✓ Correct! ✗ Not quite. Correct answer: Eu dormi bem ontem.
Translate: 'We slept for 8 hours.' Translation

Translate the phrase.

✓ Correct! ✗ Not quite. Correct answer: Nós dormimos por oito horas.
Fix the plural ending. Error Correction

Vocês dormiu na sala?

✓ Correct! ✗ Not quite. Correct answer: Vocês dormiram na sala?

Score: /10

FAQ (8)

Portuguese spelling rules for the preterite require 'u' for the third person.

No, present is 'durmo'.

No, 'tu' is 'dormiste'.

Yes, 'Dormi bem' is perfectly natural.

Use 'dormi no carro'.

It is neutral and standard.

Because it is the correct conjugation.

Yes, 'mentir' (to lie) follows a similar pattern.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

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In Other Languages

Spanish high

dormir

Spanish uses 'durmió' (u) while Portuguese uses 'dormiu' (o/u).

French moderate

dormir

French does not have the same stem-vowel shift.

German low

schlafen

German changes the root vowel entirely.

Japanese none

neru

Japanese does not conjugate for person.

Arabic low

nāma

Arabic conjugation is based on gender and number.

Chinese none

shuìjiào

No conjugation exists in Chinese.

Learning Path

Prerequisites

Previous
Having in the Past: Using 'Ter' (tive, teve, tivemos)
Next
Finding Out: Using Saber in the Preterite (soube)

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