Definition
一无所知 (yī wú suǒ zhī) is a fixed idiom meaning 'to know nothing at all (about something)'. It is specifically about lacking knowledge or awareness, whereas 毫无 (háo wú) is a more general phrase meaning 'completely lack' and must be followed by a noun (e.g., 毫无经验 'no experience'). Use 一无所知 when you want to emphasize total ignorance of a topic.
idiom
to know nothing about somethingto be completely ignorant
Examples
- 一无所知，。Tā duì zhège xiàngmù yī wú suǒ zhī, suǒyǐ wúfǎ zuòchū juédìng.He knows nothing about this project, so he can't make a decision.
- 一无所知，。Wǒ duì tā de guòqù yī wú suǒ zhī, zhǐ rènshi le tā jǐ nián.I know nothing about his past; I've only known him for a few years.
- 一无所知，。Tā jiǎzhuāng duì zhè jiàn shì yī wú suǒ zhī, qíshí quán dōu zhīdào.He pretended to know nothing about this matter, but in fact he knew everything.
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