以后 vs 之后 (yǐhòu vs zhīhòu): when to use “after” in Chinese
Both 以后 and 之后 can mean 'after', but they differ in usage and formality. 以后 can stand alone to mean 'in the future', while 之后 requires a preceding event and is more formal. Choose 以后 for general future reference, and 之后 to specifically sequence events.
以后 and 之后 both translate to 'after' in English, but they are not interchangeable. 以后 is more versatile: it can be used as a postposition (after a time or event) and as an adverb meaning 'later' or 'in the future'. 之后 is primarily a postposition that requires a preceding reference point and is more common in formal or written contexts. The key distinction is that 以后 alone can refer to the general future, while 之后 alone always implies 'after that' (referring back to a stated event or time).
When to use each
Use 以后 to mean 'after' following a time expression or an event (e.g., 下班以后, 吃饭以后). It can also stand alone as an adverb meaning 'in the future' or 'later' without a preceding reference (e.g., 以后再说). It is neutral in formality and very common in everyday speech.
When 以后 stands alone, it usually refers to an indefinite future time, not a specific time after a known event. For a definite past or future point after a specific event, use 之后.
Use 之后 to mean 'after' a specific event or time, especially in sequential or ordered descriptions. It is more formal than 以后 and is common in written language (e.g., 会议之后, 毕业之后). It cannot stand alone to mean 'in the future' without a preceding reference.
之后 is often used in anaphoric contexts—it refers back to a previously mentioned event or time. It can also be used in the pattern '首先……之后……' to list steps. It is not used to mean 'later in general'.
At a glance
| 以后 | 之后 | |
|---|---|---|
| Meaning when standing alone | 'In the future' or 'later' (general, indefinite future) | 'After that/afterward' (requires a prior reference) |
| Formality | Neutral; common in speech and writing | More formal; common in writing and formal speech |
| Requires preceding event/time | Not necessary when standing alone | Yes (or an implied prior context) |
| Use after a time duration (e.g., 三天) | Natural: 三天以后 | Possible but less common in speech: 三天之后 |
| Use in sequential instructions | Possible but less common; 之后 is preferred | Preferred: 然后……之后…… |
Examples
- 以后我们以后见面吧。Wǒmen yǐhòu jiànmiàn ba.Let's meet up later/in the future.以后 stands alone to mean 'in the future', not after a specific event.
- 以后他毕业以后就工作了。Tā bìyè yǐhòu jiù gōngzuò le.He started working after graduating.以后 follows the event '毕业'.
- 之后下课之后，我们去吃饭。Xiàkè zhīhòu, wǒmen qù chīfàn.After class, we'll go eat.之后 is used after a specific event and is more formal than 以后 in this context.
- 之后首先做好准备，之后才开始。Shǒuxiān zuòhǎo zhǔnbèi, zhīhòu cái kāishǐ.First prepare well, only then start.之后 is used in a sequential instruction.
- 以后三天以后我会回来。Sān tiān yǐhòu wǒ huì huílái.I'll be back after three days.以后 after a time duration is natural; 之后 also possible but less common.
- 以后✗下课后以后再说。Xiàkè hòu yǐhòu zàishuō.(intended: talk after class)✗ Incorrect: combining '后' and '以后' is redundant. Say 下课以后 or 下课后.
Common mistakes
- Using 之后 alone to mean 'in the future' (e.g., 之后再说) — use 以后 instead.
- Using 以后 after a specific event in formal writing where 之后 is more appropriate (e.g., 会议以后 → consider 会议之后 in formal documents).
- Combining '后' and '以后' unnecessarily, like 下课后以后 — choose one.
- Using 以后 in sequential steps where 之后 is clearer (e.g., 首先……以后…… is less standard).
FAQ
- When do I use 以后 vs 之后?
- Use 以后 when you mean 'later' or 'in the future' without a specific reference, or after a time/event in neutral speech. Use 之后 after a specific event to mean 'after that', especially in formal or written contexts. 之后 cannot stand alone to mean 'in the future'.
- Can 之后 be used alone?
- Yes, but only when there is a clear prior reference. For example, after discussing an event, you can say '之后，他走了' (After that, he left). It does not mean 'in the future' independently.
- Is 以后 or 之后 more common in spoken Chinese?
- 以后 is more common in everyday speech. 之后 is more common in writing, formal speeches, and structured descriptions.
- Can I use 以后 after a time like '三天'?
- Yes, '三天以后' is very natural. '三天之后' is also possible but slightly more formal. Both are correct.