Comparing "zai" and "you"

Both 再 (zài) and 又 (yòu) express the duplication of an action and can be roughly translated in English to "again". However, 再 is used to express actions that have not yet occurred and 又 is used for actions that have already occurred. Understanding how and when to use these two words is very important.

再 is used to express repetition of an action in the future

再 is used to express something that has already happened and will happen again.

Structure

Subject + 再 + Verb + Object

Examples

  • 我们 下次 再 来 这里 吧。We will come here again next time.
  • 你 再 帮 我 打印 两 张，这 些 不 够。You will help me print two sheets, these aren't enough.
  • 明天 我 可能 会 再 迟到。
    • I will probably come late again tomorrow.
  • 明天 我 可能 又 迟到。
    • Since it is talking about the future, you can't use "又"
  • 请 再 说 一次。
    • Please say it one more time.
  • 请 又 说 一次。
    • Since it is asking about a future action, you can't use "又"

再 can be used to say "another"

Along with expressing the repetition of an action, 再 can be used to express the equivalent of the English word "another"

Structure

Subject + 再 + Verb + Object

Examples

  • 我 要 再 看 一部 电影。
    • I am going to watch another movie.
  • 我 得 又 写 一篇 作文。
    • Since it is about the future, you can't use "又"
  • 你 可以 再 做 一碗 面条 吗。
    • You can make another bowl of noodles.
  • 我 要 又 吃 一块 蛋糕。
    • Since it is about the future, you can't use "又"

再 can be used to say "and then"

再 can be used with 先 to express sequential order (ex. Do this....and then this...). In some cases, 再 can appear by itself to simply mean "and then".

Structure

Subject + (先) + Action 1 + 再 + Action 2

Examples

  • 我们 先 做 作业 再 去 酒吧。
    • First we'll do our work, then we'll go to the bar.
  • 你 先 吃饭 又 打 电话 給 父母。
    • "又" does not sequence events.
  • 我 先 买 房子 再 结婚。
    • First I'll buy a house, then I'll get married.
  • 我们 买完 饮料 以后 再 看 电影。
    • After we buy a drink, then we'll go to a movie.
  • 我 要 看书 又 睡觉。
    • Since it is about the future, you can't use "又"

又 is used to express repetition of an action that has already occurred in the past

又 is used in declarative sentences and describes the simple repetition of actions. This repeated action has already occurred once in the past

Structure

Subject + 又 + Verb + 了

Example

  • 你 怎么 又 给 我 打 电话，什么事？
    • You keep calling me, what's the matter?
  • 这 个 老 男人 又 来 了。
    • This old man came again.
  • 他 又 不 来 上 课 了，老师 可能 罚 他。
    • He didn't come to class again. The teacher is probably going to punish him.
  • 你 为什么 又 看 这本书? 你 已经 看过 了。
    • Why do are you reading that book again？ You already read it.
  • 昨天 他 再 喝醉 了
    • "再" is not used for past events.
  • 昨天 我 再 看 电影 了
    • "再" is not used for past events.

又 is used to emphasize negation

又 can be placed before a negating verb or adjective to emphasize said negation.

Structure

Subject + 又 + 不/没 + Verb + Object

Examples

  • 我 又 不 吃 肉，只 吃素。
    • I really don't eat meat. I just eat vegetables.
  • 他 又 不 要 去 酒吧。
    • He's definitely not going to the bar.
  • 昨天 我 又 没 看 电影，我 做 作业。
    • I definitely didn't go to the movies last night. I did work.
  • 我 再 不 要 吃 日本 菜，我 要 吃 中国 菜。
    • "再" cannot emphasize the verb.
  • 你 再 不 要 跟 他 一起 去 吃 饭。你 要 跟 我 去。
    • "再" cannot emphasize the verb.

See also

Sources and further reading

Books

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