Quiero estudiar tranquilo en mi cuarto.

I want to study calmly in my room.

Breakdown of Quiero estudiar tranquilo en mi cuarto.

• yo: I
• querer: to want
• en: in
• mi: my

Questions & Answers about Quiero estudiar tranquilo en mi cuarto.

Why is yo missing before quiero? Can you just drop the subject like that?

Yes. In Spanish, subject pronouns (yo, tú, él, ella, etc.) are often omitted because the verb ending already shows who the subject is.

• Quiero already tells you it’s “I want” (1st person singular), so yo is not necessary.
• Yo quiero estudiar tranquilo en mi cuarto is also correct, but it sounds more emphatic, like “I want to study…” (maybe in contrast to someone else).

So the most natural everyday version is exactly what you see: Quiero estudiar tranquilo en mi cuarto.

Why is it tranquilo and not tranquilamente? Shouldn’t an adverb modify the verb estudiar?