Endlessly / ceaselessly (…不已)

Structure two-syllable verb / adjective + 不已

…不已 (… bù yǐ) is a formal complement attached after a two-syllable verb or adjective, almost always one with emotional weight, to say the state "does not cease": 激动不已 = "deeply stirred, unable to calm down"; 赞叹不已 = "endlessly full of admiration". Here 已 means "to stop, to cease", so 不已 = "won't stop". It belongs to written or literary register; in speech one would say 激动得不得了 or 一直赞叹. It only fits two-syllable, intense bases (后悔不已, 感慨不已, 痛苦不已), never a concrete action verb like 吃 or 走.

Examples

听tīng到dào这zhè个ge消xiāo息xī，他tā激jī动dòng不bù已yǐ。
On hearing the news, he was overcome with emotion.
游yóu客kè们men对duì眼yǎn前qián的de美měi景jǐng赞zàn叹tàn不bù已yǐ。
The tourists were endlessly in awe of the scenery before them.
对duì于yú当dāng年nián的de决jué定dìng，他tā至zhì今jīn后hòu悔huǐ不bù已yǐ。
He still regrets that decision of years ago without end.
重chóng读dú旧jiù信xìn，她tā感gǎn慨kǎi不bù已yǐ。
Rereading the old letters, she was filled with unceasing emotion.

Levels are indicative: they follow the standard Chinese Grammar Wiki (AllSet Learning) progression, not an official HSK 3.0 mapping. We never assign levels by eye.

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