开 vs 掉 (kāi vs diào): ‘apart/away’ vs ‘off/remove’
开 and 掉 are both common resultative complements, but they convey different outcomes: 开 indicates moving something apart or aside to create space (the object remains, just relocated), while 掉 indicates complete removal or elimination (the object is gone). Understanding this distinction is key to using verbs like 拿开 vs 拿掉, 打开 vs 关掉, etc.
Both 开 (kāi) and 掉 (diào) are frequently used as resultative complements after verbs to indicate the result of an action. However, they are not interchangeable: 开 conveys separation, opening, or clearing space, implying the object is still present (just moved aside), while 掉 conveys removal, elimination, or disappearance, implying the object is gone or destroyed. For example, 拿开 means 'move aside' (the object is still there), whereas 拿掉 means 'take away/remove' (the object is removed). The choice depends on whether the focus is on rearranging space or on eliminating something.
When to use each
Use 开 as a resultative complement to indicate that something is moved apart, opened, or cleared to create space. It is common with verbs like 打 (hit → 打开 open), 拿 (take → 拿开 move aside), 分 (divide → 分开 separate), and 松 (loosen → 松开 release). The object remains present but is now separated or out of the way.
开 can also imply the start of something, as in 开始 (begin), but in resultative use it always focuses on separation or opening.
Use 掉 as a resultative complement to indicate that something is removed, eliminated, or falls off entirely. It is common with verbs like 拿 (take → 拿掉 take away), 关 (close → 关掉 turn off), 擦 (wipe → 擦掉 wipe off), 扔 (throw → 扔掉 throw away), and 杀 (kill → 杀掉 kill). The object is gone or no longer in its place.
掉 often conveys a sense of completeness or finality. It can be used with actions that destroy, discard, or eliminate the target.
At a glance
| 开 | 掉 | |
|---|---|---|
| Core meaning | Separation, opening, or clearing space | Removal, elimination, or disappearance |
| Object status after action | Object remains, just moved aside or opened | Object is gone, removed, or destroyed |
| Common verb examples | 打开 (dǎkāi) – open | 拿开 (ná kāi) – move aside |
| Negation | 没打开 (méi dǎkāi) – didn't open | 没拿开 (méi ná kāi) – didn't move aside |
Examples
- 开请把书拿开。Qǐng bǎ shū ná kāi.Please move the book aside.开 is used because the book is still present, just moved out of the way.
- 掉请把垃圾拿掉。Qǐng bǎ lājī ná diào.Please take away the trash.掉 is used because the trash is to be removed entirely.
- 开打开窗户，透透气。Dǎkāi chuānghu, tòu tòu qì.Open the window to let in some air.开 indicates opening; the window remains in place.
- 掉记得关掉电脑再走。Jìde guān diào diànnǎo zài zǒu.Remember to turn off the computer before leaving.掉 indicates the computer is shut down (the state is changed).
- 开他把桌子上的文件都拿开了。Tā bǎ zhuōzi shàng de wénjiàn dōu ná kāi le.He moved all the documents on the desk aside.开: the documents are still on the desk, just rearranged.
- 掉他把桌子上的文件都拿掉了。Tā bǎ zhuōzi shàng de wénjiàn dōu ná diào le.He removed all the documents from the desk.掉: the documents are gone; the desk is clear.
Common mistakes
- Using 掉 (e.g., 打掉) instead of 开 (打开) for opening something like a door or window. ✗ 打掉门 is incorrect; use 打开门.
- Using 开 (e.g., 拿开) when you mean to completely remove something. ✗ 拿开垃圾 could imply just moving it aside, not taking it away. Use 拿掉 for removal.
- Using 掉 with a verb like 放 (put) — 放掉 means 'let go' or 'release', not 'put aside'. Use 放开 for 'let go' and 放掉 for 'release/discard'.
- Confusing 关掉 (turn off) with 打开 (open); they are opposites: 关掉 is used with devices/electronics, while 打开 is used for opening anything (door, bottle, etc.).
FAQ
- When do I use 开 vs 掉 as a resultative complement?
- Use 开 when the result is that something becomes separated, opened, or moved aside (the object is still there). Use 掉 when the result is that something is removed, eliminated, or disappears (the object is gone). For example, 拿开 means 'move aside', 拿掉 means 'take away'.
- Can 开 and 掉 be used interchangeably?
- No. They express different outcomes. Using the wrong one can change the meaning: 把书拿开 means 'move the book aside' (book remains), while 把书拿掉 means 'remove the book' (book is taken away). Only in rare contexts where moving aside is equivalent to removal might they seem similar, but generally they are distinct.
- What verbs commonly pair with 开 and 掉?
- Common pairings: 打开 (dǎkāi – open), 拿开 (ná kāi – move aside), 分开 (fēnkāi – separate), 松开 (sōngkāi – loosen) for 开. For 掉: 关掉 (guān diào – turn off), 拿掉 (ná diào – remove), 擦掉 (cā diào – wipe off), 扔/丢掉 (rēng/diū diào – throw away), 去掉 (qù diào – get rid of).
- Is 掉 always negative?
- Not necessarily. While 掉 can be used with negative actions like 杀掉 (kill) or 扔掉 (throw away), it is also used neutrally like 关掉 (turn off) or 删掉 (delete). The 'removal' sense is neutral; the connotation depends on the verb and context.