Saya menyerahkan tugas akhir kepada guru di perpustakaan.

Yes. Saya is the neutral-to-formal first-person singular pronoun. Alternatives:

• aku: more casual/intimate.
• gua/gue (Jakarta slang), ane (Betawi), iya/aya (regional): very informal/regional.
• For very formal contexts, you’ll still use saya.

So your sentence becomes:

• Formal/neutral: Saya menyerahkan…
• Casual: Aku menyerahkan… Choose based on who you’re talking to and the setting.

• Root: serah (to hand over/submit).
• Prefix: meN-
  • root starting with s → the s drops and becomes meny-, giving menyerah.
• Suffix: -kan (often adds a recipient/beneficiary or makes it causative/applicative).
• Result: menyerahkan = to hand over/submit something (often to someone), usually a deliberate, sometimes formal handover.

Important: menyerah (without -kan) means “to surrender/give up,” which is different.

Use:

• kepada for recipients (usually people): …kepada guru…
• ke for movement to a place: ke perpustakaan (“to the library”).
• untuk for purpose/benefit (“for”): tugas untuk guru = “a task for the teacher (intended for).” In informal speech, some say ke guru, but standard Indonesian prefers kepada for recipients.

It’s ambiguous as written. It can mean: 1) The handover happened at the library. 2) The teacher is (the one) at the library.

To disambiguate:

• Place of action: Di perpustakaan, saya menyerahkan tugas akhir kepada guru.
• Teacher’s location: Saya menyerahkan tugas akhir kepada guru yang berada di perpustakaan.

Indonesian has no articles, so guru can be definite or indefinite from context.

• Explicit definite: guru itu (“that/the teacher”), gurunya (“the teacher already known”).
• Possessive: guru saya or guruku (“my teacher”).
• With a title: kepada Pak/Bu [Name] (Mr./Ms.) is polite and common.

Yes. Very natural:

• Di perpustakaan, saya menyerahkan tugas akhir kepada guru. You can also keep it at the end; Indonesian is flexible with adverbials of place.

Add time/aspect markers:

• Completed: Saya sudah menyerahkan… or formal Saya telah menyerahkan…
• Ongoing: Saya sedang menyerahkan… (rare for this verb).
• Future: Saya akan menyerahkan…
• Time words: tadi (earlier), kemarin (yesterday), besok (tomorrow). Example: Kemarin saya sudah menyerahkan tugas akhir kepada guru di perpustakaan.

In schools: guru (teacher). In universities: dosen (lecturer). So you’d say:

• Saya menyerahkan tugas akhir kepada dosen di perpustakaan.

It depends on context:

• In general: “final assignment/project.”
• At many Indonesian universities: tugas akhir can refer to the capstone project, often a thesis-equivalent (sometimes specifically called skripsi for undergrad, tesis for master’s, disertasi for doctoral). Context (school vs university) clarifies it.

Add a descriptor:

• di perpustakaan kampus (at the campus library)
• di perpustakaan sekolah (at the school library)
• di perpustakaan itu (at that/the library already known)

Yes, if context makes it clear:

• Saya menyerahkan tugas akhir. You can also omit the object if the focus is on the recipient:
• Saya menyerahkan kepada guru. (sounds incomplete unless the object is obvious from context)

With serah, adding -kan (and meN-) yields a verb that:

• takes a direct object (what you hand over)
• and typically an oblique recipient with kepada (to whom) So menyerahkan X kepada Y = hand over X to Y. Without -kan, menyerah means “to surrender,” which is intransitive and different in meaning.

In formal writing, you’ll see pada used with human recipients, but the more standard, unambiguous choice is kepada. So:

• Formal: …pada guru… (acceptable)
• Neutral standard: …kepada guru… (preferred)

Common passive (focus on the object):

• Tugas akhir saya diserahkan kepada guru di perpustakaan. (agent unspecified) If you include the agent:
• Tugas akhir saya diserahkan oleh saya kepada guru di perpustakaan. (grammatical but often people avoid repeating saya like this) More natural with agent fronted:
• Saya menyerahkan tugas akhir kepada guru di perpustakaan. (active) Topicalized object in active (common in Indonesian):
• Tugas akhir saya saya serahkan kepada guru di perpustakaan.

In casual Jakarta-style speech:

• Aku ngasih/nyerahin tugas akhir ke guru di perpustakaan. Notes:
• ngasih = give (colloquial; from kasih).
• nyerahin = colloquial for menyerahkan (with -in variant).
• ke guru appears in colloquial speech instead of kepada guru. Use with care in formal settings.

Yes, use titles:

• kepada Pak/Bu Guru (Mr./Ms. Teacher)
• With a name: kepada Pak Andi / Bu Sari This is common and polite in schools.