不知不觉 bù zhī bù jué
unconsciously; before one knows it
Literally: not know not feel
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Origin
Descriptive; no single source story. Used in Song dynasty Buddhist and Neo-Confucian texts about things happening without awareness.
How to use it
Adverbial, often at the start of a clause; neutral. Often 不知不觉就……了.
Example sentences
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- 我们聊得很开心,不知不觉已经十二点了。Wǒmen liáo de hěn kāixīn, bù zhī bù jué yǐjīng shí'èr diǎn le.We were chatting happily and before we knew it, it was already twelve o'clock.we chat (particle) very happy, not know not feel already twelve o'clock (particle)
- 不知不觉,我来中国已经一年了。Bù zhī bù jué, wǒ lái Zhōngguó yǐjīng yī nián le.Without my noticing, I've already been in China for a year.not know not feel, I come China already one year (particle)
More chengyu about time & change
- 一天到晚yī tiān dào wǎnall day long; from morning till night
- 三天两头sān tiān liǎng tóuevery few days; constantly
- 一年四季yī nián sì jìall year round; throughout the year
- 从早到晚cóng zǎo dào wǎnfrom morning till night; the whole day
- 日新月异rì xīn yuè yìchanging with each passing day; rapid progress
- 争分夺秒zhēng fēn duó miǎoto race against time; make every second count
- 一朝一夕yī zhāo yī xīin a single day; overnight (usually in the negative)
- 千变万化qiān biàn wàn huàever-changing; endless variations