再
zài
Expressing "again" in the future with "zai"
再 is "again" for repetitions that haven't happened yet.
再 + Verb
How it works
我下次再来 — I'll come again next time. 再见 is literally "see you again".
For a repetition that already happened, Chinese uses 又 instead. That split — 再 for the future, 又 for the past — has no English equivalent and is worth memorising early.
再 also means "then" in sequences: 先洗手，再吃饭.
Examples
wǒ xià cì zài lái
我下次再来。
I'll come again next time.
qǐng zài shuō yí biàn
请再说一遍。
Please say it once more.
wǒ men míng tiān zài tán ba
我们明天再谈吧。
Let's talk about it again tomorrow.