Meaning
乃至 is a formal conjunction used to introduce an extreme or extended example in a series, often emphasizing progression from less extreme to more extreme cases. It connects elements in an ascending or intensifying relationship, indicating that something extends to an unexpected or notable degree.
Usage
This is primarily used in formal written Chinese, news reports, academic writing, and speeches. It's less common in casual conversation. 乃至 typically appears between two nouns, noun phrases, or clauses to show progression or extension. It's often translated as 'and even', 'or even', 'to the point of', depending on context.
Examples
- 01这个政策影响了整个地区，乃至全国。, .This policy affected the entire region, and even the whole country.
- 02他每天学习十几个小时，乃至通宵达旦。, .He studies over ten hours every day, even staying up all night.
Characters
Common collocations
- 乃至全世界and even the whole world
- 几天乃至几周several days or even several weeks
- 乃至于and even, to the extent of
Origin
乃 is a classical Chinese particle meaning 'thus' or 'so', and 至 means 'to reach'. Together they literally mean 'thus reaching to', indicating an extension to a further or extreme point.