B1 Advanced Quantities & Measures

How to Say “One by One” with 一 (yī)

To say “one by one” in Chinese you just double up: 一 + Measure Word + 一 + Measure Word, with no word for “by.” 一个一个 means “one by one,” and the same frame shifts meaning with the measure word: a time unit gives “little by little” (一天一天, “day by day”), and a verbal measure word gives “over and over” (一遍又一遍).

Why this trips learners up

English needs the word “by” for “one by one,” but Chinese does not. You simply double the measure phrase: 一 + Measure Word + 一 + Measure Word, then the verb. With the all-purpose 个 you get the most common form, 一个一个: 别吵，一个一个说 (“don’t shout, speak one by one”), 请大家一个一个上车 (“please board one by one”). Swap in any other measure word for the same effect: 一张一张签名 (“sign them one by one”), 一步一步来 (“one step at a time”). The doubled phrase is adverbial, so it sits before the verb.

Here is the clever part: the meaning depends entirely on which measure word you double. When you use a time unit like 天 or 年, the sense shifts to “little by little / gradually.” 他的中文一天一天好起来 (“his Chinese is getting better day by day”), 父母一年一年变老 (“our parents are growing older year by year”). Same frame, but “day by day” instead of “item by item.”

And when you double a verbal measure word like 次 (times) or 遍 (times through), the meaning becomes “over and over again.” 我一次一次打电话，但是没人接 (“I called over and over, but no one answered”). To stress that it happened many times, drop a 又 right between the two halves: 一遍又一遍, 一次又一次. 她一遍又一遍地读那封信 (“she read the letter over and over again”). With 遍/次 you’ll often see a 地 before the verb, since the phrase is describing how the action is done.

One thing to lock in: both halves repeat the same measure word (一个一个, never 一个一张), and the 又 for emphasis goes in the middle (一次又一次), not at the front.

The structure

一 yī Measure word 一 yī Measure word

Colour key

Each colour marks one grammatical role — and the same colour means the same role on every page in the Lab.

Pattern Subject Verb Connector Measure word Other

Examples in context

Real-world sentences, easiest first. Toggle pinyin or the translation, tap any word to see its role, or play the audio.

Tap a word to see its grammatical role.

dàjiā 大家 Subject yí 一 Pattern gè 个 Measure word yí 一 Pattern gè 个 Measure word shàngchē 上车 Verb

Everyone gets on the bus one by one (count measure word 个).

qǐng 请 Verb yì 一 Pattern zhāng 张 Measure word yì 一 Pattern zhāng 张 Measure word qiānmíng 签名 Verb

Please sign the forms one by one (a different measure word, 张).

bié jí 别急 Other yí 一 Pattern bù 步 Measure word yí 一 Pattern bù 步 Measure word lái 来 Verb

Don’t rush, take it one step at a time (一步一步).

tā de zhōngwén 他的中文 Subject yì 一 Pattern tiān 天 Measure word yì 一 Pattern tiān 天 Measure word hǎo qǐlái 好起来 Verb

His Chinese is getting better day by day (time unit 天, so “little by little”).

zhè běn shū hěn nán 这本书很难 Other wǒ 我 Subject yì 一 Pattern diǎn 点 Measure word yì 一 Pattern diǎn 点 Measure word de dú 地读 Verb

This book is hard, so I’m reading it bit by bit (一点一点 with 地).

wǒ 我 Subject yí 一 Pattern cì 次 Measure word yí 一 Pattern cì 次 Measure word dǎ diànhuà 打电话 Verb dànshì méi rén jiē 但是没人接 Other

I called over and over, but no one picked up (verbal measure word 次).

tā 她 Subject yí 一 Pattern biàn 遍 Measure word yòu 又 Connector yí 一 Pattern biàn 遍 Measure word de dú nà fēng xìn 地读那封信 Verb

She read the letter over and over again (遍 with 又 in the middle, plus 地).

tā 他 Subject yí 一 Pattern cì 次 Measure word yòu 又 Connector yí 一 Pattern cì 次 Measure word shībài 失败 Verb què cónglái méiyǒu fàngqì 却从来没有放弃 Other

He failed again and again, but never gave up (一次又一次).

Common mistakes

Avoid: 一个一张拿。 yí gè yì zhāng ná.

Say this: 一个一个拿。 yí gè yí gè ná.

Why it happens: Both halves repeat the same measure word: 一个一个拿 (“carry them one by one”), not 一个一张拿.

Avoid: 又一次一次犯错。 yòu yí cì yí cì fàn cuò.

Say this: 一次又一次犯错。 yí cì yòu yí cì fàn cuò.

Why it happens: The 又 that adds emphasis goes between the two halves, not in front: 一次又一次犯错 (“make the same mistake over and over”), not 又一次一次犯错.

Avoid: 说一个一个。 shuō yí gè yí gè.

Say this: 一个一个说。 yí gè yí gè shuō.

Why it happens: The doubled phrase is adverbial, so it comes before the verb: 一个一个说 (“speak one by one”), not 说一个一个.

Compare & contrast

一 + count measure word (一个一个: “one by one”)	一 + time unit (一天一天: “little by little”)	The difference
一个一个检查yí gè yí gè jiǎnchá	一天一天变好yì tiān yì tiān biàn hǎo	一个一个检查 means “inspect them one by one,” item after item. 一天一天变好 means “getting better day by day,” a gradual change over time.
一步一步来yí bù yí bù lái	一年一年长大yì nián yì nián zhǎngdà	一步一步来 means “one step at a time.” 一年一年长大 means “growing up year by year.” The count word counts items; the time word stretches a change over time.

Rule of thumbDouble a count or object measure word (个, 张, 步…) for “one by one.” Double a time unit (天, 年…) for “little by little / gradually.” Double a verbal measure word (次, 遍…), often with 又 in the middle, for “over and over again.”

Try it yourself

Say “Everyone boards the bus one by one.” Use 一 + 个 + 一 + 个 + verb.

Related patterns

Quick reference card

How to Say “One by One” with 一 (yī) grammar.merrymandarin.com

A pocket summary — print it and keep it by your desk.

Structure

一 + Measure word + 一 + Measure word

Example

大家一个一个上车

Everyone gets on the bus one by one (count measure word 个).

Watch out

✗ 一个一张拿。 → ✓ 一个一个拿。