When English wants to make a request feel light, it shrinks it: not "look at this" but "could you just take a quick look?"; not "be quiet" but "could you be a bit quieter?" The magic words are "just," "quick," and "a little" — they make the favor sound small, and a small favor is easy to say yes to. Mandarin has two dedicated tails that do precisely this: …一下 (yíxià) attaches to a verb to make the action brief and casual, and …一点儿 (yìdiǎnr) attaches to an adjective to tone down a demand about degree. This page is about using them to soften requests; they belong to a wider family of softening devices (吧, 嘛, and more) catalogued on softening devices, and the 一下-vs-一点儿 split has its own chooser page.
…一下: turning a verb into a small favor
Put 一下 after a verb and the action shrinks to "a moment," "a bit," "real quick." 看 is "look"; 看一下 is "have a quick look." The imposition logic is everything: 帮我看 sounds like handing someone a task, while 帮我看一下 sounds like asking for two seconds of their time. That downgrade is why 一下 is the workhorse softener of everyday requests.
等一下，我马上就来。
děng yíxià, wǒ mǎshàng jiù lái.
Hold on a sec, I'm coming right away. (informal) — 等一下 softens 等 to 'just wait a moment'.
你帮我看一下这个句子对不对？
nǐ bāng wǒ kàn yíxià zhège jùzi duì bu duì?
Could you take a quick look at whether this sentence is right? (informal) — 看一下 makes it a two-second favor.
麻烦你让一下，我下车。
máfan nǐ ràng yíxià, wǒ xiàchē.
Excuse me, could you move aside a bit? I'm getting off. (polite) — 让一下 on a crowded bus.
…一点儿: toning down a demand about degree
When your request is about how much — cheaper, quieter, faster, slower — you're really asking the listener to adjust a dial. Bald imperatives about degree (便宜！"cheaper!", 安静！"quiet!") sound like barked orders. Add 一点儿 after the adjective and you're asking for just a little movement on the dial: 便宜一点儿 "a bit cheaper," 小声一点儿 "a touch quieter." Asking for a small adjustment is far easier to grant — and far more polite — than demanding a big one.
老板，能不能便宜一点儿？
lǎobǎn, néng bu néng piányi yìdiǎnr?
Boss, could you make it a bit cheaper? (informal) — the classic market haggle; 一点儿 asks for a small drop.
请说慢一点儿，我听不太懂。
qǐng shuō màn yìdiǎnr, wǒ tīng bú tài dǒng.
Please speak a little slower — I can't quite follow. (neutral) — 慢一点儿 softens the demand.
孩子在睡觉，你们小声一点儿好吗？
háizi zài shuìjiào, nǐmen xiǎoshēng yìdiǎnr hǎo ma?
The kids are sleeping — could you keep it down a bit? (informal) — 小声一点儿 + 好吗 double-softens.
In fast speech the 一 often drops entirely: 便宜点儿 (piányi diǎnr), 快点儿 (kuài diǎnr). The clipped form is even more casual, common in markets and among friends.
Why they soften: shrink the imposition
Both tails work by the same pragmatic principle — make the request smaller than it really is. 一下 shrinks the duration or weight of an action ("just a moment of your time"); 一点儿 shrinks the amount of change you're asking for ("only a little"). Neither literally binds you — 等一下 might mean waiting five minutes, and 便宜一点儿 might be angling for a big discount — but by framing the ask as tiny, you give the listener an easy, face-saving yes. This is understatement as politeness, the same instinct behind English "could I just borrow you for a second?"
Stacking with 请, 能不能, and 帮
These softeners are cushions you layer on top of the other politeness tools, not replacements for them. They sit at the tail end of a request while 请, 能不能, and 帮 do their work at the front. A fully cushioned request might read: 能不能 + 帮我 + verb + 一下 or 请 + adjective + 一点儿.
你能不能帮我拿一下那本书？
nǐ néng bu néng bāng wǒ ná yíxià nà běn shū?
Could you grab that book for me for a sec? (informal) — 能不能 + 帮我 at the front, 一下 at the tail.
不好意思，请往里面走一点儿。
bù hǎoyìsi, qǐng wǎng lǐmiàn zǒu yìdiǎnr.
Excuse me, please move in a little. (polite) — opener + 请 + 一点儿.
The modal-question front end is covered on softening with modal questions; 请 and 麻烦 on 请 and 麻烦 requests.
一下 or 一点儿? A quick line
They aren't interchangeable — the grammar decides which one fits:
| Attaches to | Softens | Example | |
|---|---|---|---|
| 一下 | a verb | a brief/casual action | 看一下 (have a quick look) |
| 一点儿 | an adjective (degree) | a small change of degree | 便宜一点儿 (a bit cheaper) |
If the word after it is an action, use 一下; if it's a quality you want dialled up or down, use 一点儿. The full breakdown, including 一点儿 as a plain quantity word ("a little water"), is on the 一下 vs 一点儿 chooser.
Common Mistakes
1. Swapping the two. 一下 can't soften an adjective, and 一点儿 can't soften a plain verb's action.
❌ 便宜一下。
Wrong — 便宜 is an adjective (degree), so it needs 一点儿, not 一下.
✅ 便宜一点儿。
piányi yìdiǎnr.
A bit cheaper. — adjective + 一点儿.
2. Dropping the softener so a request sounds like an order. The bare imperative is grammatical but blunt.
❌ 看！这个对不对？
Blunt — 看！ barks 'Look!' at the listener.
✅ 你看一下，这个对不对？
nǐ kàn yíxià, zhège duì bu duì?
Have a quick look — is this right? — 一下 turns it into a favor.
3. Putting 一下 after the object instead of the verb. 一下 clings to the verb; the object follows it.
❌ 你看这个句子一下。
Wrong order — 一下 hugs the verb: 看一下这个句子.
✅ 你看一下这个句子。
nǐ kàn yíxià zhège jùzi.
Take a quick look at this sentence. — 一下 right after 看.
4. Confusing degree 一点儿 with negative-slant 有点儿. 一点儿 asks for a bit more of a good quality (慢一点儿 "a bit slower, please"); 有点儿 complains that something is a bit too much of a bad one (有点儿慢 "it's a bit slow" = annoyingly so).
❌ 请你有点儿慢。
Wrong — 有点儿 voices a complaint, not a request; a request needs 一点儿 after the adjective.
✅ 请你慢一点儿。
qǐng nǐ màn yìdiǎnr.
Please go a bit slower. — request = adjective + 一点儿.
Key Takeaways
- …一下 after a verb makes the action brief and casual — "just / real quick" (看一下, 等一下), turning a task into a small favor.
- …一点儿 after an adjective asks for a small change of degree — "a bit" (便宜一点儿, 小声一点儿) — far politer than a bald demand.
- Both soften by the same trick: shrink the imposition so the listener has an easy, face-saving yes.
- They stack at the tail of a request while 请 / 能不能 / 帮 work the front: 能不能帮我看一下.
- Match the tail to the word: action → 一下, degree → 一点儿; and don't confuse request 一点儿 with complaint 有点儿.
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- Making Requests: 请/麻烦你/劳驾HSK 2 — Chinese scales the politeness of a request by the OPENER you choose, not by sprinkling 'please' everywhere: 请 (qǐng) fronts a polite imperative, 麻烦你 (máfan nǐ) does the 'sorry to bother you' work, and 劳驾 (láojià) opens a request to a stranger. Pick the opener by social distance and how big the favor is.
- 一下 vs 一点儿 — Brief Action vs Small AmountHSK 2 — Both soften, but they attach to different things. 一下 (yíxià) follows a VERB and softens the action — 'briefly, once, give it a quick…' (看一下 'take a quick look', 等一下 'wait a sec'). 一点儿 (yìdiǎnr) marks a SMALL AMOUNT or degree — a little of a noun (吃一点儿 'eat a little') or a small nudge on an adjective (大一点儿 'a bit bigger'). Ask whether you're softening the verb or measuring the amount.
- Softening Requests with Modal QuestionsHSK 3 — The politest way to ask for something in Chinese is to phrase it as a modal yes/no question — 可以…吗？能不能…？可不可以…？方便…吗？ Instead of ordering (帮我一下!), you ask about the listener's ability, permission, or convenience, which hands them an easy way to say no.