Table of Contents
Both can mean “again”, but the natural choice depends on whether the repeated action is still ahead or has already happened.
English uses “again” for many situations, but Mandarin usually makes the timing clearer. The two common choices are 再 (zài) and 又 (yòu). Choosing between them becomes much easier when you stop translating word for word and ask one question: has the repeated action happened yet?
The Core Difference: 再 (zài) Looks Forward, 又 (yòu) Looks Back
Use 再 (zài) for a repetition that is requested, planned or possible in the future. Use 又 (yòu) when something has already happened again or is happening again now.
请再说一次。
Qǐng zài shuō yí cì.
Please say it again.
The repetition has not happened yet, so 再 (zài) is natural.
他昨天又迟到了。
Tā zuótiān yòu chídào le.
He was late again yesterday.
The lateness has already happened, so 又 (yòu) fits.
A polite request to repeat something normally uses 再 (zài).
Everyday Patterns You Can Reuse
Put 再 (zài) before a verb when you want another attempt, serving or conversation:
我想再试一次。
Wǒ xiǎng zài shì yí cì.
I want to try again.
明天再聊吧。
Míngtiān zài liáo ba.
Let’s talk again tomorrow.
再来一杯茶 (zài lái yì bēi chá) means “another cup of tea, please”.
Use 又 (yòu) for a repeated event you can already observe or report:
今天又下雨了。
Jīntiān yòu xiàyǔ le.
It is raining again today.
你怎么又忘了？
Nǐ zěnme yòu wàng le?
How did you forget again?
你又迟到了 (nǐ yòu chídào le) comments on lateness that has already happened.
**又……又……** (*yòu… yòu…*) is a different pattern meaning “both…and…”, as in **又安静又漂亮** (*yòu ānjìng yòu piàoliang*), “both quiet and beautiful”.
Useful Chinese Words and Phrases
- 再说一次say it again
- 再试一次try again
- 又来了here we go again
- 又忘了forgot again
A Short Everyday Conversation
A: 老师，可以再说一次吗？
Lǎoshī, kěyǐ zài shuō yí cì ma?
Teacher, could you say that again?
B: 当然可以。你又忘记这个词了吗？
Dāngrán kěyǐ. Nǐ yòu wàngjì zhège cí le ma?
Of course. Have you forgotten this word again?
A: 对不起，我想再练一次。
Duìbuqǐ, wǒ xiǎng zài liàn yí cì.
Sorry, I would like to practise it again.
Practical Advice and a Common Misunderstanding
Listen for time words, but do not rely on them alone. 明天 (míngtiān, tomorrow) and 下次 (xià cì, next time) often point towards 再 (zài). 昨天 (zuótiān, yesterday) and a completed-action 了 (le) often support 又 (yòu). Context is still the real guide.
Learners sometimes think the words are interchangeable because both translate as “again”. Compare 你又迟到了 (Nǐ yòu chídào le), “You are late again”, with 你再迟到，我就不等你了 (Nǐ zài chídào, wǒ jiù bù děng nǐ le), “If you are late again, I will not wait for you”. The first is a comment; the second is a warning about a possible future repetition.
Grammar Spotlight: Check the Timing in Context
Future-looking 又 (yòu) can also appear with words such as 要 (yào, going to). This is a useful reminder that the beginner rule is a strong starting point, not a substitute for context.
Final Takeaway
Use 再 (zài) when the repetition is still ahead and 又 (yòu) when it has happened again already. Practise the pair in contrasting sentences and the timing will soon feel natural.