Definition
打开 means to open or turn on — it's the clearest word for those actions. 开 (HSK1) is shorter but also means 'drive, boil', so 打开 avoids confusion. 开启 (HSK6) is more formal, used for starting systems or phases.
verb
to open (a door, window, book, container, etc.)to turn on (a device, light, computer, etc.)
Examples
- 打开。Qǐng dǎ kāi chuānghu.Please open the window.
- 打开。Tā dǎ kāi le diànshì.He turned on the TV.
- 打开。Wǒ dǎ kāi le shū.I opened the book.
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