一会儿……一会儿……
Reach for this when someone or something keeps switching between two states or activities in quick succession — 'one moment X, the next moment Y.' It captures the back-and-forth feeling of a restless child, a moody friend, changing weather, or a person who can't decide. The two clauses describe alternating short bursts, not a sequence of two long actions. Very common in spoken Chinese for vivid, slightly exasperated descriptions.
Structure
一会儿 [ACTION/STATE A]，一会儿 [ACTION/STATE B]
yíhuìr... yíhuìr...
How to Think About It
一会儿 literally means 'a short while,' and doubling it paints the picture of two short whiles flipping back and forth. The pattern only works if the alternation feels fast and repeated — 'a moment of this, a moment of that, again and again.' If the actions are long or happen only once each, you want 先…然后… (first…then…) instead. The whole flavor is 'can't sit still / can't make up its mind.'
Examples
他一会儿笑，一会儿哭。
Tā yíhuìr xiào, yíhuìr kū.
One moment he's laughing, the next he's crying.
今天的天气一会儿冷，一会儿热。
Jīntiān de tiānqì yíhuìr lěng, yíhuìr rè.
Today the weather keeps flipping between cold and hot.
孩子一会儿想吃面，一会儿想吃饭。
Háizi yíhuìr xiǎng chī miàn, yíhuìr xiǎng chī fàn.
One minute the kid wants noodles, the next minute rice.
Common Mistake
Learners use 一会儿…一会儿… to describe a one-shot sequence ('first I ate, then I slept'), borrowing the structure from 先…然后…. That sounds wrong because 一会儿…一会儿… requires alternation or repetition — it implies the actions flip back and forth, not just two events in a row.
我一会儿吃饭，一会儿睡觉了。
我先吃饭，然后睡觉了。
Don't Confuse With
先...然后...
Pure sequence — 'first X, then Y,' one-shot, no alternation. Use this for narrating steps. Use 一会儿…一会儿… only when the two actions keep flipping.
有时...有时...
'Sometimes X, sometimes Y' — describes habitual variation over a long timeframe. 一会儿…一会儿… zooms into a short window where the switching happens fast.
时而...时而...
Literary cousin with the same alternation meaning, common in writing and weather/landscape descriptions ('时而下雨，时而出太阳'). 一会儿…一会儿… is the spoken default.
Practice
他 ___ 笑，一会儿哭。
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一会儿
天气一会儿冷，___ 热。
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一会儿
Put in order: [一会儿 / 一会儿 / 看书 / 玩手机 / 他 / ， /]
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他一会儿看书，一会儿玩手机。
Translate to Chinese: 'The cat keeps running into the kitchen one moment and into the bedroom the next.'
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猫一会儿跑到厨房，一会儿跑到卧室。
Write one sentence using 一会儿…一会儿… to describe someone or something that keeps changing its mind.
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Example answer: 她一会儿说想去，一会儿说不想去。 (One moment she says she wants to go, the next she says she doesn't.)
Hear It in Real Episodes
This pattern appears in 1 Fluentide episode: