Questions & Answers about Saya khawatir infeksi ini belum sembuh.
Saya and Aku both mean I / me, but they differ in formality.
- Saya – neutral and polite. Safe for almost any situation: talking to strangers, teachers, doctors, in writing, etc.
- Aku – informal/intimate. Used with close friends, family, people your age (depending on region and relationship).
In Saya khawatir infeksi ini belum sembuh, Saya is a good choice when speaking to a doctor, nurse, or someone you don’t know well. With a close friend, Aku khawatir… would sound more natural.
You can, but it changes the feel:
- Saya khawatir infeksi ini belum sembuh. – clear, complete sentence: I am worried…
- Khawatir infeksi ini belum sembuh. – sounds more like a fragment or a note to yourself: [I’m] worried this infection hasn’t healed.
In casual speech, people sometimes drop the subject if it’s obvious, but for learners and in careful speech, keep Saya.