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Level

[B1](https://resources.allsetlearning.com/chinese/grammar/B1_grammar_points)

Similar to

Used for

[Expressing duration](https://resources.allsetlearning.com/chinese/grammar/Expressing_duration), [Describing actions](https://resources.allsetlearning.com/chinese/grammar/Describing_actions)

Keywords

[一下子](https://resources.allsetlearning.com/chinese/grammar/%E4%B8%80%E4%B8%8B%E5%AD%90), [了](https://resources.allsetlearning.com/chinese/grammar/%E4%BA%86)

Translations

[all at once](https://resources.allsetlearning.com/chinese/grammar/All_at_once)

[![Chinese-grammar-wiki-le.jpg](Expressing%20%22all%20at%20once%22%20with%20%22yixiazi%22%20-%20Chinese%20Grammar%20Wiki_fichiers/300px-Chinese-grammar-wiki-le.jpg "fig:Chinese-grammar-wiki-le.jpg"){width="300" height="300"}](https://resources.allsetlearning.com/chinese/grammar/File:Chinese-grammar-wiki-le.jpg)

一下子 (yīxiàzi) can be used as an [adverb](https://resources.allsetlearning.com/chinese/grammar/Adverb) meaning "all at once." Because it inherently encompasses a sense of "completion," it's typically going to be followed by a [了](https://resources.allsetlearning.com/chinese/grammar/%E4%BA%86) (le) later in the sentence.

Contents -------- [hide]([# "wikilink")\]

- [1 Used as "All at Once"](#Used_as_.22All_at_Once.22 "wikilink") - [1.1 Structure](#Structure "wikilink") - [1.2 Examples](#Examples "wikilink") - [2 Used as "Soon and Naturally"](#Used_as_.22Soon_and_Naturally.22 "wikilink") - [2.1 Structure](#Structure_2 "wikilink") - [2.2 Examples](#Examples_2 "wikilink") - [3 See also](#See_also "wikilink") - [4 Sources and further reading](#Sources_and_further_reading "wikilink") - [4.1 Books](#Books "wikilink")

Used as "All at Once" ------------------------------------------------------------------------------------- 一下子 (yīxiàzi) is a very informal expression to describe how fast things happened. It usually touches upon sudden or severe changes in a very short amount of time. Although 一下子 (yīxiàzi) is already quite informal, in colloquial Chinese 一下 (yīxià) can also be used to express the same thing. ### Structure

Subj. + 一下子 + Predicate + 了

### Examples

- 天气 *一下子* 变冷 **了** 。Tiānqì *yīxiàzi* biàn lěng **le**.The weather suddenly got cold. - 他 *一下子* 吃 **了** 三碗米饭。Tā *yīxiàzi* chī **le** sān wǎn mǐfàn.He ate three bowls of rice all at once. - 她下楼的时候 *一下子* 摔倒 **了** 。Tā xiàlóu de shíhou *yīxiàzi* shuāidǎo **le**.As she went down the stairs, she suddenly fell. - 我们说话的时候，她 *一下子* 哭 **了** 。Wǒmen shuōhuà de shíhou, tā *yīxiàzi* kū **le**.She burst into tears when we were talking. - 她上个月 *一下子* 瘦 **了** 很多。Tā shàng gè yuè *yīxiàzi* shòu **le** hěn duō.Last month, she lost a lot of weight all at once.

Used as "Soon and Naturally" --------------------------------------------------------------------------------------------------- 一下子 (yíxiàzi), followed with [就](https://resources.allsetlearning.com/chinese/grammar/%E5%B0%B1) (jiù), usually implies that things happened very quickly, naturally, and easily. Again, 一下 (yīxià) can also be used instead of 一下子 (yīxiàzi). ### Structure

Subj. + 一下子 + 就 + Predicate + 了

### Examples

- 老师进来以后，大家 *一下子* **就** 安静 **了** 。Lǎoshī jìnlái yǐhòu, dàjiā *yīxiàzi* **jiù** ānjìng **le**.Everyone became silent after the teacher came in. - 听他说完，我 *一下子* **就** 明白 **了** 。Tīng tā shuō wán, wǒ *yīxiàzi* **jiù** míngbai **le**.After hearing him out, I understood everything all at once. - 他是最高的，我 *一下子* **就** 看到他 **了** 。Tā shì zuì gāo de, wǒ *yīxiàzi* **jiù** kàndào tā **le**.He is the tallest. I spotted him right away. - 拍完那部电影，他 *一下子* **就** 出名 **了** 。Pāi wán nà bù diànyǐng, tā *yīxiàzi* **jiù** chūmíng **le**.He became very famous soon after that movie came out. - 看到那张照片，我 *一下子* **就** 想起来 **了** 。Kàndào nà zhāng zhàopiàn, wǒ *yīxiàzi* **jiù** xiǎng qǐlái **le**.It all came back to me when I saw that picture.

See also ------------------------------------------------------- - [Verb reduplication with yi](https://resources.allsetlearning.com/chinese/grammar/Verb_reduplication_with_yi) - [Verb reduplication](https://resources.allsetlearning.com/chinese/grammar/Verb_reduplication) Sources and further reading --------------------------------------------------------------------------------------------- ### Books - [Integrated Chinese: Level 1, Part 1 (3rd ed)](https://resources.allsetlearning.com/chinese/grammar/Integrated_Chinese:_Level_1,_Part_1_(3rd_ed)) (pp. 126) [→buy](http://amzn.to/2xe9H5W) - [40 Lessons for Basic Chinese Course (基础汉语40课上册）](https://resources.allsetlearning.com/chinese/grammar/40_Lessons_for_Basic_Chinese_Course_(%E5%9F%BA%E7%A1%80%E6%B1%89%E8%AF%AD40%E8%AF%BE%E4%B8%8A%E5%86%8C%EF%BC%89) (pp. 206) [→buy](http://www.amazon.com/gp/product/B001FTL8D8/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B001FTL8D8&linkCode=as2&tag=allset-20)

[Category](https://resources.allsetlearning.com/chinese/grammar/Special:Categories): - [B1 grammar points](https://resources.allsetlearning.com/chinese/grammar/Category:B1_grammar_points)

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