Once you know that あげる sends a thing away from your side, the auxiliary 〜てあげる is a short step: it sends an action the same way. Attach あげる to the て-form of a verb and you no longer give an object — you give a favor, performed for someone else's benefit, the benefit flowing outward from you to them. The structure is easy. The hard part is social: English can say "I carried it for you" with a completely neutral face, but 〜てあげる openly stamps the deed as a kindness I did you — and that stamp can sound generous, or it can sound like you are patting yourself on the back. This page teaches both the pattern and the tact.
The pattern
Take the て-form of the action verb and add あげる. The doer is the subject (は/が), and the beneficiary is marked according to what the base verb normally takes — often に for a recipient, を for a direct object, or the person may be left unstated when obvious.
友達に本を貸してあげた。
tomodachi ni hon o kashite ageta
I lent my friend a book (as a favor).
荷物を持ってあげる。
nimotsu o motte ageru
I'll carry your bags for you.
妹に宿題を教えてあげた。
imōto ni shukudai o oshiete ageta
I helped my little sister with her homework.
Compare 本を貸した ("I lent a book," a bare report of fact) with 本を貸してあげた. The second adds nothing to the events — the same book changed hands — but it editorializes: this was a favor, and it was for their benefit. That editorial layer is the entire meaning of てあげる, and deciding whether to add it is a judgment call every time.
Offering to do something: 〜てあげましょうか
Because てあげる frames an action as a favor, it is the natural shape for offering to help. In casual speech you offer with 〜てあげようか; a notch more polite, 〜てあげましょうか:
写真を撮ってあげましょうか。
shashin o totte agemashō ka
Shall I take a photo for you?
駅まで送ってあげようか。
eki made okutte ageyō ka
Want me to walk you to the station?
道を案内してあげる。
michi o annai shite ageru
I'll show you the way.
These are warm and helpful among equals, or toward someone younger or lower in the pecking order. Toward a friend they land as friendly. The trouble starts when you aim them upward.
Why てあげる is socially risky
Here is the insight English gives you no warning about. Because てあげる explicitly announces "I did you a kindness," it subtly places the doer above the receiver — the generous benefactor looking down at the grateful beneficiary. Among equals and downward that is fine. Pointed at a superior, it curdles into condescension. Telling your teacher 先生に教えてあげる ("I'll teach you, sir") sounds absurd, as if you were doing the professor a charitable favor. Even a well-meant offer to a boss — 荷物を持ってあげましょうか — carries a faint whiff of "aren't I being nice to you."
So how do you do a favor for a superior? Two moves:
- Downgrade to a plain verb and let the kindness be implied. お茶を入れます ("I'll make some tea") is warmer to a boss than お茶を入れてあげます precisely because it doesn't trumpet the favor.
- Use the humble giving form さしあげる (formal / humble) for genuinely deferential favors: 部長の荷物をお持ちします uses the humble お〜する; the very formal さしあげる (先生を駅までお送りしてさしあげる) exists but is easy to overdo. Full detail on the keigo giving-verbs page.
子供に絵本を読んであげた。
kodomo ni ehon o yonde ageta
I read the child a picture book. (downward — perfectly natural)
犬を散歩に連れて行ってあげる。
inu o sanpo ni tsurete itte ageru
I'll take the dog for a walk. (downward, to a pet — natural)
Don't over-use it
Even sideways, sprinkling てあげる over every helpful act makes you sound self-congratulatory, as though narrating your own generosity. Native speakers use it deliberately, not by default. If the favor is small or obvious, a plain verb is often warmer. Reserve てあげる for when you actually want to foreground that you did this for them — an offer, a real kindness, a contrast with not-helping.
Marking the beneficiary
The person you do the favor for is not always marked に. Their particle follows whatever the base verb normally demands. When the base verb takes a direct-object person, that person stays を; when it takes a に-recipient, they stay に; and when the base verb has no slot for a person at all, you attach them with のために ("for the sake of"):
友達を手伝ってあげた。
tomodachi o tetsudatte ageta
I helped my friend. (手伝う takes を, so the person is を)
妹に漢字を教えてあげた。
imōto ni kanji o oshiete ageta
I taught my little sister kanji. (教える takes a に-recipient)
おばあさんのために買い物をしてあげた。
obāsan no tame ni kaimono o shite ageta
I did the shopping for my grandma. (買い物をする has no person slot → のために)
Get this wrong and you either double-mark the person or leave the favor floating with no beneficiary. When in doubt, ask what particle the verb would take without あげる — that answer does not change when you add the favor layer.
Register at a glance
| Form | Direction / level | Register | Example |
|---|---|---|---|
| 〜てやる | down (kids, pets), or rough | informal | 弟に貸してやる |
| 〜てあげる | sideways / down (equals, juniors) | neutral | 友達に貸してあげる |
| 〜てさしあげる | up (superiors) — use sparingly | formal / humble | 先生を送ってさしあげる |
Note that 〜てやる (informal) is the downward/rough sibling — natural for pets, small children, and gruff male speech (待ってろ、買ってきてやる), but blunt or even aggressive if misaimed. さしあげる, at the other end, is so deferential it can sound stiff or ironic if overused, which is exactly why Japanese often prefers to hide an upward favor rather than flag it.
Common mistakes
❌ 先生、宿題を手伝ってあげましょうか。
sensei, shukudai o tetsudatte agemashō ka
Condescending to a teacher — てあげる looks down on the receiver.
✅ 先生、宿題をお手伝いしましょうか。
sensei, shukudai o o-tetsudai shimashō ka
Shall I help you with the homework, teacher? (humble お〜する)
❌ 部長、荷物を持ってあげます。
buchō, nimotsu o motte agemasu
Sounds like doing the boss a charitable favor.
✅ 部長、お荷物をお持ちします。
buchō, o-nimotsu o o-mochi shimasu
I'll carry your bag, sir. (humble, no self-congratulation)
❌ 私は友達に手伝ってあげてもらった。
watashi wa tomodachi ni tetsudatte agete moratta
Direction scrambled — if the favor came to me, it's てくれた/てもらった, not てあげる.
✅ 私は友達に手伝ってもらった。
watashi wa tomodachi ni tetsudatte moratta
I had my friend help me.
❌ 母が私に朝ごはんを作ってあげた。
haha ga watashi ni asagohan o tsukutte ageta
Wrong direction — a favor coming TO me can't use てあげる.
✅ 母が私に朝ごはんを作ってくれた。
haha ga watashi ni asagohan o tsukutte kureta
My mom made me breakfast. (toward me → てくれた)
Key takeaways
- 〜てあげる = do an action as a favor, flowing away from you to someone else. Structure: て-form + あげる, doer as subject.
- It overtly frames the deed as a kindness, which English never does — so it can sound patronizing, especially aimed upward.
- Toward a superior, drop the auxiliary (plain verb) or use a humble form (お〜する / さしあげる) instead of broadcasting the favor.
- 〜てやる (informal, down/rough) and 〜てさしあげる (formal, up) are the register siblings.
- If the favor comes toward you, you need 〜てくれる or 〜てもらう, not てあげる.
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Start learning Japanese→Related Topics
- 〜てくれる: A Favor Done for MeN4 — The benefactive 〜てくれる marks an action someone did for your benefit, flowing inward — it adds warmth and gratitude a bare verb lacks, and softens requests like 手伝ってくれる？
- 〜てもらう: Getting Something DoneN3 — The benefactive 〜てもらう frames getting someone to do something from the receiver's side — the powerhouse behind Japan's most courteous requests (〜てもらえますか, 〜ていただけますか) and, with the causative, humble 'let me' forms.
- Keigo Giving & Receiving: さしあげる・くださる・いただくN3 — How Japanese swaps あげる・くれる・もらう for the humble and honorific verbs 差し上げる・くださる・いただく to layer social deference onto the direction of a favor.
- Giving & Receiving: あげる・くれる・もらうN4 — Why Japanese has three giving-and-receiving verbs where English has two, and how they are chosen by the direction of the transfer relative to the speaker's in-group.