B1 Advanced Quantities & Measures

How to Say “Only” with 就 (jiù)

Besides “then,” 就 (jiù) often means “only / just,” capping a small quantity. It sits before the subject for “only X” (就他没来, “only he didn’t come”), before the predicate for a small amount (我就去过一次, “I’ve only been once”), and in 就 + Number + Measure + Noun for “only have” (我就一个哥哥, “I only have one brother”).

Why this trips learners up

You probably met 就 as “then / right away” (吃完就走). It has another everyday job: “only / just,” marking that there is a small quantity of something. It shows up in three spots.

First, right before the subject, to single one person or thing out: 就 + Subject + Predicate. 大家都很忙，就我来了 (“everyone was busy, only I came”), 灯都关了，就厨房的还亮着 (“the lights are all off, only the kitchen one is still on”). Notice how it often answers a 都 (“all”) in the clause before: everyone did X, 就 only this one didn’t.

Second, right before the predicate, where the small quantity comes after the verb as an amount or object: Subject + 就 + Verb + (number + measure word). 我就待了两天 (“I only stayed two days”), 他就说了一句话 (“he only said one sentence”), 你就买了一张票？(“you only bought one ticket?”).

Third, for “only have”: Subject + 就 + Number + Measure word + Noun. 我就一个哥哥 (“I only have one brother”), 我们公司就三个员工 (“our company has only three employees”). This is close in meaning to 只有, but here you must not add 有: it is 就一个哥哥, never 就有一个哥哥.

One last thing to keep straight: this “only” 就 lives right next to the “then” 就. When 就 caps a small number (often with 一个 or 一次, or stands before the lone subject), it is “only.” When it links two events in time (吃完就走, 一…就…), it is “then / as soon as.” What sits around 就, a quantity or a second event, tells you which one you are looking at.

The structure

Subject 就 jiù Other

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 Object Question 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 dōu hěn máng 大家都很忙 Other jiù 就 Pattern wǒ 我 Subject lái le 来了 Verb

Everyone was busy, so only I came (就 before the subject).

dēng dōu guān le 灯都关了 Other jiù 就 Pattern chúfáng de 厨房的 Subject hái liàng zhe 还亮着 Verb

The lights are all off; only the kitchen one is still on (就 singling out one thing).

wǒ 我 Subject jiù 就 Pattern dāi le liǎng tiān 待了两天 Verb

I only stayed two days (Subject + 就 + verb + amount).

tā 他 Subject jiù 就 Pattern shuō le yí jù huà 说了一句话 Verb

He only said one sentence (就 before the predicate, small object).

nǐ 你 Subject jiù 就 Pattern mǎi le yì zhāng piào 买了一张票 Verb

You only bought one ticket? (就 in a surprised question).

wǒ 我 Subject jiù 就 Pattern yì bǎ sǎn 一把伞 Object wǒmen yìqǐ yòng ba 我们一起用吧 Other

I only have one umbrella, so let’s share it (“only have”: 就 + number + measure + noun, no 有).

nǐmen sùshè 你们宿舍 Subject jiù 就 Pattern yí gè línyùjiān 一个淋浴间 Object ma 吗 Question

Does your dorm only have one shower? (“only have” in a question).

biérén dōu dài le lǐwù 别人都带了礼物 Other wǒ 我 Subject jiù 就 Pattern yì zhāng kǎpiàn 一张卡片 Object

Everyone else brought a gift; I only have a card (就 answering a 都 clause).

Common mistakes

Avoid: 我就有一个哥哥。 wǒ jiù yǒu yí gè gēge.

Say this: 我就一个哥哥。 wǒ jiù yí gè gēge.

Why it happens: “Only have” is 就 + Number + Measure + Noun, with no 有: 我就一个哥哥 (“I only have one brother”), not 我就有一个哥哥. (只有 is fine, but 就有 is not.)

Avoid: 他就没来。 tā jiù méi lái.

Say this: 就他没来。 jiù tā méi lái.

Why it happens: To mean “only + subject,” 就 goes before the subject: 就他没来 (“only he didn’t come”). 他就没来 means something else, “he just didn’t come.”

Avoid: 我就一哥哥。 wǒ jiù yī gēge.

Say this: 我就一个哥哥。 wǒ jiù yí gè gēge.

Why it happens: Keep the measure word with the number: 我就一个哥哥 (“I only have one brother”), not 我就一哥哥.

Compare & contrast

就 = “only / just” (a small quantity)	就 = “then / as soon as” (a sequence)	The difference
我就吃了一个wǒ jiù chī le yí gè	我吃完就走wǒ chī wán jiù zǒu	我就吃了一个 means “I only ate one,” capping the amount. 我吃完就走 means “I’ll leave as soon as I finish,” linking two events in time.
就他没来jiù tā méi lái	他一来就走了tā yì lái jiù zǒu le	就他没来 means “only he didn’t come,” singling one person out. 他一来就走了 means “he left as soon as he arrived,” a 一…就… sequence.

Rule of thumb就 = “only” caps a small quantity (就他没来, 就吃了一个, usually with 一个/一次 or before the lone subject). 就 = “then / as soon as” links two events in time (吃完就走, 一…就…). A nearby quantity points to “only”; a second event points to “then.”

Try it yourself

Say “My family only has one cat.” Use Subject + 就 + number + measure word + noun.

Related patterns

Quick reference card

How to Say “Only” with 就 (jiù) grammar.merrymandarin.com

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

Structure

Subject + 就 + Other

Example

大家都很忙就我来了

Everyone was busy, so only I came (就 before the subject).

Watch out

✗ 我就有一个哥哥。 → ✓ 我就一个哥哥。