-아/어 주세요: The Everyday Polite Request ('Please Do')

If you learn one way to ask for things in Korean, learn -아/어 주세요. It is the everyday, all-purpose polite request — "please [do something] for me" — and you will use it dozens of times a day: at a café, in a taxi, at work, on the phone. But it hides a lesson that trips up nearly every English speaker. In English, please is a word you sprinkle onto a command to make it polite. Korean has no such sprinkle-on word. Politeness lives inside the verb ending, and asking a favor — as opposed to giving an instruction — requires you to literally say the other person is "giving" you the action. Miss this, and your polite-sounding 하세요 lands as an order.

What the pieces are doing

Break -아/어 주세요 into its parts and the logic falls out:

• 주다 means "to give." Attached to another verb as an auxiliary (-아/어 주다), it marks the action as done for someone's benefit — a favor. 열어 주다 is not just "open"; it is "open (it) for me."
• -(으)세요 is the polite honorific ending — historically -(으)시- (subject honorific) + -어요 (polite). It raises the listener and sets a courteous register.

Put together, 열어 주세요 = "please open it (for me)." The 주다 supplies the favor; the 세요 supplies the politeness. Both jobs are done by the ending, never by a separate word. For the auxiliary 주다 on its own, see the benefactive -아/어 주다 page; for the honorific ending, see -(으)세요.

Building the form: the 아/어 stem

To attach 주세요 you first put the main verb into its 아/어 (infinitive) stem — the same stem you already use for 해요-style present tense. The vowel is chosen by harmony:

• If the stem's last vowel is ㅏ or ㅗ → 아: 잡다 → 잡아 주세요, 찾다 → 찾아 주세요.
• Otherwise → 어: 열다 → 열어 주세요, 읽다 → 읽어 주세요.
• 하다 verbs → 해: 말하다 → 말해 주세요, 설명하다 → 설명해 주세요.

Contractions happen exactly as in the present tense: 기다리다 → 기다려, 보이다 → 보여, 쓰다 → 써.

The core error: 하세요 is an instruction, not a request

Here is the mistake that outlives every other. Because 하세요 "do it" is honorific and polite-sounding, English speakers grab it to mean "please do it." But a bare honorific imperative like 하세요 / 기다리세요 / 말하세요 does not ask a favor — it politely tells the listener to do something. It is the register of a doctor, a teacher, or a sign: correct, courteous, and directive. To actually request — to frame the action as a favor to you — you need the 주다.

Notice this is not just about politeness level — both columns are polite. It is about direction of benefit. The left column benefits nobody in particular (or the listener); the right column benefits you, the speaker, and says so.

When bare -(으)세요 is exactly right

The flip side keeps you from over-using 주다. When the action benefits the listener — you are offering, inviting, or wishing them well — the bare -(으)세요 is the natural choice, and adding 주다 would be odd (why would they do you a favor by eating?).

The little word 좀

You will notice 좀 hovering in front of the verb in almost every real request: 문 좀 열어 주세요, 사진 좀 찍어 주세요. Here 좀 is not the quantity "a little" (that is 조금, of which 좀 is the contraction) — it is a softener, the conversational equivalent of English "just" or "if you would." It takes the edge off and makes the request sound gentler and more natural. Dropping it is not wrong, but including it is what natives do. It gets its own treatment on the indirect-requests page.

Climbing higher when you need to

-아/어 주세요 is polite enough for most situations — shops, taxis, colleagues you're comfortable with. But for a bigger favor, or toward someone you must be more deferential to, you climb one rung to -아/어 주시겠어요? or -아/어 주실 수 있어요?, which turn the request into a question about the listener's willingness or ability. The full ladder is laid out on the request-ladder page.

Common Mistakes

1. Using bare -(으)세요 to ask a favor. The classic transfer error: reaching for 하세요/기다리세요 to mean "please do it / please wait," which instead instructs the listener.

2. Wrong vowel harmony on the 아/어 stem. The stem vowel must match the verb's last vowel (ㅏ/ㅗ → 아, else → 어).

3. Botching the 하다 contraction. 하다 verbs contract to 해, not ×하아 / ×하어.

4. Piling 주다 onto a listener-benefit action. Offering food or a seat is for their good, so 주세요 sounds strange; use the bare form.

5. Translating "please" as a separate word. There is no standalone "please" to drop into the sentence; the politeness and the favor are both in the ending.

Key Takeaways

• -아/어 주세요 = "please do X for me": 주다 marks the action as a favor, -(으)세요 supplies the politeness. Neither is a separate "please."
• Build it on the 아/어 stem by harmony (ㅏ/ㅗ → 아, else → 어, 하 → 해): 열어 주세요, 잡아 주세요, 말해 주세요.
• Bare 하세요 is an instruction, not a request. To ask a favor you need 주다: 해 주세요, not 하세요.
• Decide by who benefits: for the listener → bare -(으)세요 (앉으세요, 드세요); for you → -아/어 주세요 (기다려 주세요, 도와주세요).
• 좀 before the verb is a softener (not "a little"); include it to sound natural. For bigger or more deferential asks, climb to 주시겠어요 / 주실 수 있어요.