Present a past event as a complete whole
Begin with the viewpoint, not the number of minutes involved. Ontem eu trabalhei presents yesterday’s work as a completed event. Morei lá por cinco anos can present a long period of residence as a bounded whole. The same tense can also include repetition within a completed period, such as studying every day during a particular vacation. Therefore, a rule that equates this tense with a single short action would mislead you. The imperfect has other useful jobs, including background and habitual viewpoints, but you do not need its full system to build the completed event statements here. Give the listener a past period through context or a phrase such as ontem. The time phrase helps interpretation; it does not replace the verb ending. Describe what happened, who participated, and any detail that establishes the event’s limits.
Ontem eu trabalhei.
Yesterday I worked, presenting the event as completed.
The first person past ending places the speaker’s work in the stated completed period. The time word and verb form support the same interpretation.
Eu morei lá por cinco anos.
I lived there for five years, treating the residence as a completed period.
A long duration is compatible with the completed past viewpoint. The first person form presents the residence as a bounded whole rather than requiring a momentary event.
References for this explanation
Build the singular forms of the first regular family
For a regular verb such as falar, the first person singular past is falei, while você, ele, and ela use falou. The same pattern produces estudei and estudou. Compare the subject and ending together: changing from the speaker to the listener changes the verb form even when the event stays the same. In Brazilian Portuguese, você addresses another person but uses the same grammatical person forms as ele and ela. This differs from English, whose ordinary past action form usually stays unchanged across subjects. Do not add an English style helper to mark the past; the Portuguese verb itself carries the ending. Practice a short pair about the same event, first describing yourself and then another person. A useful contrast changes only the subject, making the ending’s job easy to see.
Eu falei com Ana ontem.
I spoke with Ana yesterday.
The speaker requires the regular first person past ending. The other details identify the conversation but do not alter who controls agreement.
Você estudou ontem.
You studied yesterday, addressing one person with você.
The address pronoun takes third person singular grammatical agreement. The completed past form therefore ends in ou for this regular verb.
Follow a complete example
Build a sentence with this meaning: I spoke with Ana yesterday. Before looking at the answer, identify which information controls the grammatical choice.
- First, identify the message: I spoke with Ana yesterday. Keep that message fixed while comparing forms. A sentence can be grammatical yet communicate something different, so meaning is part of the decision.
- The speaker requires the regular first person past ending. The other details identify the conversation but do not alter who controls agreement.
- Now read the complete sentence, Eu falei com Ana ontem. Check the words surrounding your choice as well as the choice itself. Explain what would change if the speaker, number, or intended message changed. Then cover this example and reconstruct the sentence from the English cue.
Eu falei com Ana ontem. I spoke with Ana yesterday.
References for this explanation
Distinguish the second regular family from the first
With a regular er verb such as comer, use comi for the speaker and comeu with você, ele, or ela. The third person ending differs from the ou ending of the regular ar family. The verb’s infinitive gives you the family to use, but meaning still determines whether a completed past statement is appropriate. Ela comeu cedo reports an eating event rather than describing her usual schedule. Negation or a question can change the message without replacing the past form with an infinitive. At this stage, focus on a few high frequency verbs and use them in real messages. A compact record of infinitive, speaker form, and third person form is more useful than applying one familiar ending to every verb you encounter. Irregular verbs require separate learning, even when their infinitive ends in the same letters.
Eu comi cedo ontem.
I ate early yesterday.
The regular first person completed past of comer is comi. The short form already contains the personal and past marking needed here.
Ela comeu em casa ontem.
She ate at home yesterday.
The subject requires third person singular agreement, and this regular er verb uses the past ending eu. The location is additional event information.
References for this explanation
Recognize the third family and its shared speaker ending
The regular past of abrir includes abri and abriu. Its first person singular ending resembles that of regular er verbs, but the third person singular differs: comeu contrasts with abriu. Do not infer the whole verb family from the speaker form alone. Begin from the infinitive when you need to construct a new form. Eu abri a porta and ela abriu a janela are complete event descriptions, with an object explaining what was opened. Some common verbs ending in ir are irregular, so the regular pattern is a useful model rather than a guarantee about all members of the family. Keep the examples’ meaning concrete by naming the object and adding a time phrase when needed. Then retell the event from another person’s viewpoint, checking the subject and the ending as a pair.
Eu abri a porta ontem.
I opened the door yesterday.
The regular first person past form ends in i. The noun after the verb names the object opened and does not control personal agreement.
Ela abriu a janela.
She opened the window, using the completed past.
The third person singular past of this regular ir verb ends in iu. It differs from the eu ending found in the regular er family.
References for this explanation
Use context when the present and past look identical
In Brazilian spelling, nós falamos, nós comemos, and nós abrimos can represent either present forms or completed past forms. A phrase such as ontem or an established narrative tells the listener which reading is intended. This is a real overlap, not a reason to invent an extra ending. European spelling may distinguish some ar past forms with an accent, but that distinction is not imposed on the Brazilian forms practiced here. The ordinary subject nós requires first person plural agreement; a gente normally takes a third person singular verb even when it refers to the same group. Treat that as a difference in grammatical construction rather than a difference in how many people exist. When a written sentence has no time context, acknowledge possible ambiguity instead of claiming the form alone proves a past interpretation.
Ontem nós falamos com Ana.
Yesterday we spoke with Ana, using nós and Brazilian spelling.
The time phrase establishes the past reading of a form that also occurs in the present. No extra accent is required in this Brazilian model.
Ontem nós comemos aqui.
Yesterday we ate here, with an explicit first person plural subject.
The completed time context identifies the past interpretation. The verb agrees with nós despite being identical in writing to the present form.
Keep plural people distinct from singular people
For vocês, eles, and elas, the regular completed past forms include falaram, comeram, and abriram. The family vowel remains important, and the plural ending distinguishes a group from a singular subject. In writing, compare viajaram with viajarão carefully: the first reports past travel, while the second is a synthetic future form. They are not interchangeable spellings of the same tense. A stated past period helps you choose the intended form, but the accent and ending still carry grammatical information. Do not decide only from the final sound you think you heard. Link the written form to the whole sentence and its time frame. When practicing, describe an event involving one person, then expand the subject to a group and change the verb accordingly while preserving the rest of the message.
Eles viajaram ontem.
They traveled yesterday, using the completed past.
The plural subject requires a plural verb, and the past ending matches the completed period. The unaccented final sequence belongs to this past form.
Vocês comeram aqui ontem.
You all ate here yesterday.
The plural address pronoun requires third person plural grammatical agreement. The regular er past form retains the family vowel before the plural ending.
Try the reasoning with less help
Build a sentence with this meaning: They traveled yesterday, using the completed past. Before looking at the answer, identify which information controls the grammatical choice.
- First, identify the message: They traveled yesterday, using the completed past. Keep that message fixed while comparing forms. A sentence can be grammatical yet communicate something different, so meaning is part of the decision.
- The plural subject requires a plural verb, and the past ending matches the completed period. The unaccented final sequence belongs to this past form.
- Now read the complete sentence, Eles viajaram ontem. Check the words surrounding your choice as well as the choice itself. Explain what would change if the speaker, number, or intended message changed. Then cover this example and reconstruct the sentence from the English cue.
Compare your reasoning
Eles viajaram ontem. They traveled yesterday, using the completed past.
References for this explanation
Preserve the past form in negatives and questions
Não falei denies a past speaking event, and você falou? asks whether one happened. Unlike English constructions with did, these simple Portuguese patterns keep the finite past verb rather than switching it to an infinitive. Spelling can also adjust to preserve a stem’s sound: ficar gives fiquei, and pagar gives paguei. These are spelling adjustments within the past pattern, not reasons to pronounce a new consonant sound. Finally, do not translate every English have studied expression with tenho estudado. The Portuguese compound often describes repeated or continuing activity reaching into the present, while a completed event at a stated past time commonly uses the simple past. This is a meaning contrast, not a mechanical match between the number of words in two languages. State the event and viewpoint first, then choose the Portuguese construction.
Eu não fiquei em casa ontem.
I did not stay at home yesterday, using ficar.
The negative word precedes the finite past verb. The spelling uses qu before e to preserve the consonant sound associated with the infinitive.
Eu paguei a conta ontem.
I paid the bill yesterday.
The first person past spelling adds u after g before e. The event is completed, and the expressed speaker controls the verb’s person.
Notice the difference
Common mistakes
Match the person
Instead ofEu falou ontem.
For this meaningEu falei ontem.
The speaker requires first person singular agreement. A past time phrase does not make every past ending interchangeable across subjects.
Keep the family ending
Instead ofEla abreu a porta.
For this meaningEla abriu a porta.
The regular third person past of abrir follows the ir family. Do not borrow the vowel from a familiar er verb.
Preserve the finite verb after negation
Instead ofEu não falar ontem.
For this meaningEu não falei ontem.
The ordinary past negative keeps a conjugated Portuguese verb. It does not use an infinitive merely because English would use a base form after did not.
From understanding to using
Make your own example.
Try these without answer choices. Say your answer aloud or write it below, then compare your reasoning with the model.
Your turn 1
Report that yesterday you worked at home and then spoke with Ana.
Compare with a model
Ontem eu trabalhei em casa e depois falei com Ana.
Yesterday I worked at home and then spoke with Ana.
Both verbs take first person singular completed past forms. The time phrase establishes a finished period, and the sequence word orders the two events without adding a new tense. Explain what each ending contributes before replacing Ana with another person or changing the location.
- Did you preserve the requested meaning?
- Does the form match the person or noun in your message?
- Can you explain your choice before looking at the model?
Your turn 2
Say that your group ate here yesterday, but you personally did not pay the bill. Use nós for the group.
Compare with a model
Ontem nós comemos aqui, mas eu não paguei a conta.
Yesterday we ate here, but I did not pay the bill.
The group form is identical to a possible present form, so the time context is essential. The second clause changes the subject to the speaker and uses a different personal ending. Negation leaves the finite past form intact, including its spelling adjustment.
- Did you preserve the requested meaning?
- Does the form match the person or noun in your message?
- Can you explain your choice before looking at the model?
Put it into practice
Make the next choice.
Choose a response and learn why it works. Your score reflects your first answer to each question. You can revisit anything you miss.
Choose an answer, then open the explanation to check your reasoning.
Question 1
Complete the sentence for this meaning: Yesterday I worked, presenting the event as completed.
Ontem eu ___.
- trabalhei
- trabalho
Check the answer
Answer: trabalhei
trabalhei: The first person past ending places the speaker’s work in the stated completed period. The time word and verb form support the same interpretation.
trabalho: This is the ordinary first person present form. It does not supply the completed past form explicitly requested here.
Question 2
Complete the sentence for this meaning: I lived there for five years, treating the residence as a completed period.
Eu ___ lá por cinco anos.
- morou
- morei
Check the answer
Answer: morei
morou: This third person past form does not agree with the expressed first person subject.
morei: A long duration is compatible with the completed past viewpoint. The first person form presents the residence as a bounded whole rather than requiring a momentary event.
Question 3
Complete the sentence for this meaning: I spoke with Ana yesterday.
Eu ___ com Ana ontem.
- falei
- falou
Check the answer
Answer: falei
falei: The speaker requires the regular first person past ending. The other details identify the conversation but do not alter who controls agreement.
falou: This form belongs with você, ele, or ela, not the first person subject shown.
Question 4
Complete the sentence for this meaning: You studied yesterday, addressing one person with você.
Você ___ ontem.
- estudei
- estudou
Check the answer
Answer: estudou
estudei: This is the speaker’s first person form and would change the grammatical subject of the verb.
estudou: The address pronoun takes third person singular grammatical agreement. The completed past form therefore ends in ou for this regular verb.
Question 5
Complete the sentence for this meaning: I ate early yesterday.
Eu ___ cedo ontem.
- comi
- comeu
Check the answer
Answer: comi
comi: The regular first person completed past of comer is comi. The short form already contains the personal and past marking needed here.
comeu: This is a third person singular past form and does not agree with the explicit speaker subject.
Question 6
Complete the sentence for this meaning: She ate at home yesterday.
Ela ___ em casa ontem.
- comou
- comeu
Check the answer
Answer: comeu
comou: This incorrectly extends the regular ar pattern to an er verb and is not the standard form.
comeu: The subject requires third person singular agreement, and this regular er verb uses the past ending eu. The location is additional event information.
Question 7
Complete the sentence for this meaning: I opened the door yesterday.
Eu ___ a porta ontem.
- abri
- abriu
Check the answer
Answer: abri
abri: The regular first person past form ends in i. The noun after the verb names the object opened and does not control personal agreement.
abriu: This form would agree with a third person singular subject rather than the speaker.
Question 8
Complete the sentence for this meaning: She opened the window, using the completed past.
Ela ___ a janela.
- abreu
- abriu
Check the answer
Answer: abriu
abreu: This mixes the endings of two regular families. The infinitive abrir supplies the pattern required here.
abriu: The third person singular past of this regular ir verb ends in iu. It differs from the eu ending found in the regular er family.
Question 9
Complete the sentence for this meaning: Yesterday we spoke with Ana, using nós and Brazilian spelling.
Ontem nós ___ com Ana.
- falamos
- falou
Check the answer
Answer: falamos
falamos: The time phrase establishes the past reading of a form that also occurs in the present. No extra accent is required in this Brazilian model.
falou: This singular form does not agree with nós, even though it is a valid past form with other subjects.
Question 10
Complete the sentence for this meaning: Yesterday we ate here, with an explicit first person plural subject.
Ontem nós ___ aqui.
- comeu
- comemos
Check the answer
Answer: comemos
comeu: This third person singular form does not match the expressed plural first person subject.
comemos: The completed time context identifies the past interpretation. The verb agrees with nós despite being identical in writing to the present form.
Question 11
Complete the sentence for this meaning: They traveled yesterday, using the completed past.
Eles ___ ontem.
- viajaram
- viajarão
Check the answer
Answer: viajaram
viajaram: The plural subject requires a plural verb, and the past ending matches the completed period. The unaccented final sequence belongs to this past form.
viajarão: This is a future form. It conflicts with the requested completed past account of yesterday’s event.
Question 12
Complete the sentence for this meaning: You all ate here yesterday.
Vocês ___ aqui ontem.
- comeu
- comeram
Check the answer
Answer: comeram
comeu: This singular form could address one person with você, but it does not agree with vocês.
comeram: The plural address pronoun requires third person plural grammatical agreement. The regular er past form retains the family vowel before the plural ending.
Question 13
Complete the sentence for this meaning: I did not stay at home yesterday, using ficar.
Eu não ___ em casa ontem.
- fiquei
- fico
Check the answer
Answer: fiquei
fiquei: The negative word precedes the finite past verb. The spelling uses qu before e to preserve the consonant sound associated with the infinitive.
fico: This is the first person present form. It does not supply the completed past event requested.
Question 14
Complete the sentence for this meaning: I paid the bill yesterday.
Eu ___ a conta ontem.
- pagou
- paguei
Check the answer
Answer: paguei
pagou: This is a valid past form for a third person singular subject, but it does not agree with eu.
paguei: The first person past spelling adds u after g before e. The event is completed, and the expressed speaker controls the verb’s person.
Keep the conversation going
What to practice next
Return to the production tasks after a break. Reconstruct your sentences without the models, compare the meaning and form, and repair any error by explaining its cause. Then use one sentence in a short exchange of your own.
Sources and editorial notes
By Loquus ·
Source checked with AI assistance
These original lessons synthesize the cited sources with AI assistance. They have not been certified by an independent human language specialist. Usage limits and regional differences are stated where relevant.
- IFSul e Tec Brasil: Narrativas do passado
- Priberam: conjugation of morar
- Priberam: conjugation of trabalhar
- Priberam: conjugation of falar
- Priberam: conjugation of estudar
- University of Texas, Orlando Kelm: Regular verbs
- Priberam: conjugation of comer
- University of Texas at Austin, Orlando R. Kelm: Compound Verbs
- Priberam: conjugation of abrir
- University of Texas at Austin, Orlando R. Kelm: Words to Know
- Priberam: conjugation of viajar
- Priberam: conjugation of ficar
- Priberam: conjugation of pagar
- Dicionário Priberam: não
Learning research behind the practice
Worked examples, retrieval practice, and later review inform the activities. These studies do not establish the effectiveness of this specific lesson.
- Karpicke and Roediger: The critical importance of retrieval for learning
- Butler and Roediger: Feedback enhances the positive effects and reduces the negative effects of multiple choice testing
- Institute of Education Sciences: Organizing Instruction and Study to Improve Student Learning
- Rittle Johnson and Star: Compared to what?