Portuguese Phrase
O que parece ser o problema principal?
Meaning
Literally, ‘What seems to be the main problem?’ It is used to ask for an assessment of the most important issue in a situation, often when troubleshooting or discussing a difficulty.
When to use
Use this question when you want to identify the biggest obstacle in a project, a technical glitch, or any situation where several problems might exist but you need to focus on the primary one.
✦Grammar Breakdown
Oquepareceseroproblemaprincipal?
Definite Article (O)
The masculine singular article 'o' is used before nouns like 'problema' to specify a particular item.
Relative Pronoun (que)
Que links the clause 'parece ser o problema principal' to the noun phrase, meaning 'what' or 'that which'.
Verb ‘parecer’ (present 3rd person singular)
Parecer means ‘to seem’. In the present tense, ‘parece’ agrees with the implicit subject ‘it’.
Infinitive ‘ser’
Ser is the infinitive form of ‘to be’. After ‘parece’, the infinitive expresses a perceived state.
Adjective ‘principal’
Principal means ‘main’ or ‘principal’ and agrees in gender and number with ‘problema’.
🗨In Conversation
O que parece ser o problema principal?
What seems to be the main problem?
Pelo que vejo, o problema principal é a falta de conexão à internet.
From what I see, the main problem is the lack of internet connection.
✕Common Mistakes
O que é o problema principal?
Using ‘é’ changes the meaning to a factual statement (‘What is the main problem?’) rather than asking for a perceived assessment.
O que parece estar o problema principal?
‘Estar’ refers to temporary states; ‘ser’ is preferred for identifying the underlying, more permanent issue.
O que parece ser o problema principalmente?
‘Principalmente’ means ‘especially’, not the adjective ‘principal’. It would make the sentence nonsensical.
↔Alternatives
Qual parece ser o principal problema?
Which seems to be the main problem?
O que é o problema mais importante?
What is the most important problem?
Qual é o problema principal aqui?
What is the main problem here?
Cultural Tip
In Brazilian Portuguese, the construction ‘parece ser’ is common in formal or semi‑formal contexts such as business meetings, tech support, or academic discussions. In casual conversation, speakers often shorten it to ‘parece o problema principal’ or simply ‘qual é o problema principal?’. Also, remember that ‘principal’ follows the noun in gender and number, so it stays masculine singular with ‘problema’.