Por que tu estás triste?

Breakdown of Por que tu estás triste?

tu
you
estar
to be
triste
sad
por que
why

Questions & Answers about Por que tu estás triste?

What does "por que" mean in this sentence, and when is it used?
"Por que" is an interrogative phrase meaning "why" in English. It is used at the beginning of a question to ask for a reason. In this sentence, it introduces the inquiry about the cause of someone’s sadness.
Why is the pronoun "tu" used here instead of "você" or omitting the subject?
"Tu" is the informal second-person singular pronoun, commonly used in Portugal. European Portuguese often employs "tu" for addressing someone informally, whereas Brazilian Portuguese tends to favor "você." Even though Portuguese can drop subject pronouns when the verb form is clear, including "tu" here emphasizes the personal and informal tone of the question.
How is the verb "estar" conjugated in this sentence, and why does it appear as "estás"?
"Estar" means "to be" (in the sense of a temporary state), and in this sentence it is conjugated in the second-person singular present tense as "estás." This conjugation matches the subject pronoun "tu," ensuring proper subject-verb agreement in Portuguese.
What does the adjective "triste" mean?
The adjective "triste" translates to "sad" in English. It describes the emotional state of the person being addressed in the sentence.
What is the difference between "por que", "por quê", and "porque" in Portuguese?

These three forms have distinct uses:
"Por que" (two words, without an accent) is used at the beginning of a question to mean "why."
"Por quê" (with an accent on the "e") is used at the end of a question, for example, "Você está triste, por quê?"
"Porque" (one word) means "because," and is used to provide an explanation or reason. Understanding these differences is key to using each form correctly in written and spoken Portuguese.

AI Language TutorTry it ↗
What's the best way to learn Portuguese grammar?
Portuguese grammar becomes intuitive with practice. Focus on understanding the core patterns first — how sentences are structured, how verbs change form, and how words relate to each other. Our course breaks these concepts into small lessons so you can build understanding step by step.

Sign up free — start using our AI language tutor

Start learning Portuguese

Master Portuguese — from Por que tu estás triste to fluency

All course content and exercises are completely free — no paywalls, no trial periods.

  • Infinitely deep — unlimited vocabulary and grammar
  • Fast-paced — build complex sentences from the start
  • Unforgettable — efficient spaced repetition system
  • AI tutor to answer your grammar questions